Institute for Scientific Research
Boston College

 

 

 

 

 

 

Publications & Presentations

Contact me for re-prints

Journal Papers

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65. Yizengaw, E., M. B. Moldwin, B. Wilson, A. Mannucci, and A. Coster (2013), Accuracy of TOPEX and JASON altimeter TEC and its effect of sea surface estimation, Soon to be Submitted to Radio Sci.,

64. Yizengaw, E., E. Zesta, M. B. Moldwin, M. Magoun, N. K. Tripathi, C. Surussavadee, and Z. Bamba (2017), ULF Wave Associated Density Irregularities and Scintillation at the Equator, Geophys. Res. Lett. 44 (Under Review)

63. Pradipta, R. and E. Yizengaw (2017), Ionospheric Turbulence, Wave Disturbances, and Plasma Density Depletions during the Total Solar Eclipse over North America on 21 August 2017, Geophys. Res. Lett. 44 (Under Review)

62. Carter, B., S. T. Ram, E. Yizengaw, R. Pradipta, J. Retterer, R. Norman, J. Currie, K. Groves, R. Caton, M. Terkildsen, T. Yokoyama, and K. Zhang (2017), Unseasonal development of F-region irregularities over Southeast Asia on 28 July 2014: Forcing from above?, Prog. Earth and Planet. Sci. (Under Review)

61. Habarulema, J. B., Yizengaw, E., Z. T. Katamzi-Joseph, M. B. Moldwin, S. Buchert (2017), Storm-time global observations of large scale TIDs from ground-based and in situ satellite measurements, J. Geophys. Res. (Under Review)

60. Tebabal, A., B. Damtie, M. Nigussie, and E. Yizengaw (2017), Temporal Variations in Solar Irradiance Since 1947, Sol Phys., 292: 112, doi.org/10.1007/s11207-017-1128-x, (ADS Abstract)

59. Yizengaw, E. and B. Carter (2017), Longitudinal, Seasonal and Solar Cycle Variation of Lunar Tide Influence on the Equatorial Electrojet, Ann. Geophys., 35, 525-533, doi:10.5194/angeo-35-525-2017, (ADS Abstract)

58. Mazzella, A., J. Habarulema, and E. Yizengaw (2017), Determinations of ionosphere and plasmasphere electron content for an African chain of GPS stations, Ann. Geophys., 35, 599-612, doi:10.5194/angeo-35-599-2017, (ADS Abstract)

57. Tesema, T., R. Mesquita, J. Meriwether, B. Damtie, M. Nigussie, J. Makela, D. Fisher, B. Harding, E. Yizengaw, and S. Sanders (2017), New results on equatorial thermospheric winds and temperatures from Ethiopia, Africa, Ann. Geophys., 35, 333–344, doi:10.5194/angeo-35-333-2017, (ADS Abstract)

56. Bolaji, O., O. Owolabi, E. Falayi, E. Jimoh, A. Kotoye, O. Odeyemi, B. Rabiu, P. Doherty, E. Yizengaw, Y. Yamazaki, J. Adeniyi, R. Kaka, and K. Onanuga (2017), Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum, Ann. Geophys., 35, 123–132, doi/0.5194/angeo-35-123-2017, (ADS Abstract)

55. Carter, B. A., E. Yizengaw, E., R. Pradipta, J. Weygand, A. Pulkkinen, M. Moldwin, M. Piersanti, R. Norman, and K. Zhang (2016), Geomagnetically induced currents around the world during the 2015 St. Patrick's Day storm, J. Geophys. Res. 121, doi/10.1002/2016JA023344, (ADS Abstract)

54. Yizengaw, E., M. B. Moldwin, E. Zesta, M. Magoun, R. Pradipta, C. M. Biouele, A. B. Rabiu, O. K. Obrou, Z. Bamba, and E. R. de Paula (2016), Response of the Equatorial Ionosphere to the Geomagnetic DP2 current system, Geophys. Res. Lett. 43, doi:10.1002/2016GL070090. (ADS Abstract)

53. Habarulema, J. B., Z. T. Katamzi, E. Yizengaw, Y. Yamazaki, and G. Seemala (2016), Simultaneous storm time equatorward and poleward largescale TIDs on a global scale, Geophys. Res. Lett. 43, doi:10.1002/2016GL069740. (ADS Abstract)

52. Nigussie, M., S. M. Radicella, B. Damtie, E. Yizengaw, B. Nava, and L. Roininen (2016), Validation of NeQuick TEC data ingestion technique against C/NOFS and EISCAT electron density measurements, Radio Sci., 51, doi:10.1002/2015RS005930. (ADS Abstract)

51. Anad, A., C. Amory-Mazaudier, M. Hamoudi, S. Bourouis, A. Abtout, and E. Yizengaw (2016), Sq solar variation at Medea Observatory (Algeria), from 2008 to 2011, Adv. Space Res., doi:10.1016/j.asr.2016.06.029. (ADS Abstract)

50. Yizengaw, E. and B. A. Carter (2016), Imaging the global vertical density structure from the ground and space, Ionospheric Space Weather: Longitude Dependence and Lower Atmosphere Forcing, 220, p.105 (ADS Abstract)

49. Zesta, E., A. Boudouridis, J.M. Weygand, E. Yizengaw, M. B. Moldwin, and P. Chi (2016), Inter-Hemispheric Asymmetries in Magnetospheric Energy Input, Ionospheric Space Weather: Longitude Dependence and Lower Atmosphere Forcing, 220, p.1 (ADS Abstract)

48. Nigussie, M., B. Damtie, E. Yizengaw, and S. M. Radicella (2016), Modeling the East-African Ionosphere, Ionospheric Space Weather: Longitude Dependence and Lower Atmosphere Forcing, 220, p.207 (ADS Abstract)

47. Carter, B. A., E. Yizengaw, E., R. Pradipta, J. Retterer, K. Groves, C. Valladares, R. Caton, C. Bridgwood, R. Norman, and K. Zhang (2016), Global equatorial plasma bubble occurrence during the 2015 St. Patrick’s Dat Storm, J. Geophys. Res. 121, 894–905, doi:10.1002/2015JA022194., (ADS Abstract)

46. Carter, B. A., E. Yizengaw, R. Pradipta, A. J. Halford, R. Norman, K. Zhang (2015), Interplanetary shocks and the resulting geomagnetically induced currents at the equator, Geophys. Res. Lett., 42, 6554–6559, doi:10.1002/2015GL065060. (ADS Abstract)

45. Habarulema, J. B., Z. Katamzi, and E. Yizengaw (2015), First observations of poleward large scale travelling ionospheric disturbances over the African sector during the geomagnetic storm conditions, J. Geophys. Res. Space Physics, 120, 6914–6929, doi:10.1002/2015JA021066. (ADS Abstract)

44. Maute, A, M.E. Hagan, V. Yudin, H.-L. Liu, and E. Yizengaw (2015), Causes of the longitudinal differences in the equatorial vertical ExB drift during the 2013 SSW period as simulated by the TIME-GCM, J. Geophys. Res. Space Physics 120, 5117–5136. doi: 10.1002/2015JA021126. (ADS Abstract)

43. Tebabal, A., B. Damtie, M. Nigussie, A. Bires, and E. Yizengaw (2015), Modeling total solar irradiance from PMOD composite using feed-forward neural networks, J. Atmos. Solar-Terr. Phys., 135, 64-71. (ADS Abstract)

42. Kassa, T., B. Damtie, A. Bires, E. Yizengaw, and P. Cilliers (2015), Storm-time characteristics of the equatorial ionization anomaly in the East African sector, Adv. Space Res., 56(1), 57-70. (ADS Abstract)

41. Kassa, T., B. Damtie, A. Bires, E. Yizengaw, and P. Cilliers (2015), Spatio-temporal characteristics of the Equatorial Ionization Anomaly (EIA) in the East African region via ionospheric tomography during the year 2012, Adv. Space Res., 55(1), 184-198. (ADS Abstract)

40. Carter, B. A., J. M. Retterer, E. Yizengaw K. Wiens, S. Wing, K. Groves, R. Caton, C. Bridgwood, M. Francis, M. Terkildsen, R. Norman, and K. Zhang (2014), Using solar wind data to predict daily GPS scintillation occurrence in the African and Asian low-latitude regions, Geophys. Res. Lett., 41, 8176–8184, doi:10.1002/2014GL062203, (ADS Abstract)

39. Habarulema, J. B., Z. T. Katamzi, and E. Yizengaw (2014), A simultaneous study of ionospheric parameters derived from FORMOSAT-3/COSMIC, GRACE and CHAMP missions over mid, low and equatorial latitudes: comparison with ionosonde data, J. Geophys. Res. Space Physics, 119, doi:10.1002/2014JA020192, (ADS Abstract)

38. Carter, B. A., J. M. Retterer, E. Yizengaw, K. Groves, R. Caton, L. McNamara, C. Bridgwood, M. Francis, M. Terkildsen, R. Norman, and K. Zhang (2014), Geomagnetic control of equatorial plasma bubble activity modeled by the TIEGCM with Kp, Geophys. Res. Lett., 41, doi:10.1002/2014GL060953, (ADS Abstract)

37. Yizengaw, E., M. B. Moldwin, E. Zesta, C. M. Biouele, B. Damtie, A. Mebrahtu, B. Rabiu, C. E. Valladares, and R. Stoneback (2014), The longitudinal variability of equatorial electrojet and vertical drift velocity in the African and American sectors, Ann. Geophys., 32, 231–238, 2014 ADS Abstract

36. Carter, B. A., E. Yizengaw, J. M. Retterer, M. Francis, M. Terkildsen, R. Marshall, R. Norman, and K. Zhang (2014), An analysis of the quiet time day-to-day variability in the formation of postsunset equatorial plasma bubbles in the Southeast Asian region, J. Geophys. Res. Space Physics, 119, doi:10.1002/2013JA019570, (ADS Abstract)

35. Bello, O.R., A.B. Rabiu, K. Yumoto, and E. Yizengaw, (2014), Mean solar quiet daily variations in the earth’s magnetic field along East African longitudes, J. Adv. Space Res., 54(3), 283-289, (ADS Abstract)

34. Yizengaw, E., J. Retterer, E. E. Pacheco, P. Roddy, K. Groves, R. Caton, and P. Baki (2013), Post-midnight Bubbles and Scintillations in the Quiet-Time June Solstice, Geophys. Res. Lett., 40, doi:10.1002/2013GL058307 ADS Abstract

33. Yizengaw, E., E. Zesta, C. M. Biouele, M. B. Moldwin, A. Boudouridis, B. Damtie, A. Mebrahtu, F. Anad, R. F. Pfaff, and M. Hartinger (2013), Observations of ULF wave related equatorial electrojet fluctuations, J. Atmos. Solar-Terr. Phys., 103, 157-168. ADS Abstract

32. Yizengaw, E., P. Doherty, and T. Fuller-Rowell (2013), Is Space Weather Different Over Africa, and If So, Why? AGU Chapman Conference Report, Space Weather, 11, doi:10.1002/swe.20063. ADS Abstract.

31. Pacheco, E. E. and E. Yizengaw (2013), The day-to-day longitudinal variability of the global ionospheric density distribution at low latitudes during low solar activity, J. Geophys. Res. Space Physics, 118, doi:10.1002/jgra.50241, (ADS Abstract)

30. Fuller-Rowell, T., E. Yizengaw, P. Doherty, and G. Mengistu (2013), The Longitudinal Properties of the Ionosphere and Their Effects on Space Weather, Eos, Transactions AGU, 94(17), 23 April 2013, pp: 160. ADS Abstract.

29. Nigussie, M., S.M. Radicella, B. Damtie, B. Nava, E. Yizengaw, and K. Groves (2013), Validation of the NeQuick 2 and IRI-2007 models in East-African equatorial region, J. Atmos. Solar-Terr. Phys., 102, PP: 26-33 (ADS Abstract)

28. Zou, S., M. B. Moldwin, M. J. Nicolls, A. J. Ridley, A. J. Coster, E. Yizengaw, L. R. Lyons, and E. F. Donovan (2013), Electrodynamics of the high-latitude trough: its relationship with convection flows and field-aligned currents, J. Geophys. Res. Space Physics, 118, 2565–2572, doi:10.1002/jgra.50120. ADS Abstract.

27. Nigussie, M., S.M. Radicella, B. Damtie, B. Nava, E. Yizengaw, and L. Ciraolo (2012),TEC assimilation to the NeQuick 2 for modeling the East-African equatorial region ionosphere, Radio Sci., 47, RS5002, doi:10.1029/2012RS004981. ADS Abstract.

26. Yizengaw, E., E. Zesta, M. B. Moldwin, B. Damtie, A. Mebrahtu, C. E. Valladares, and R. F. Pfaff (2012), Longitudinal differences of ionospheric vertical density distribution and equatorial electrodynamics, J. Geophys. Res.,117, A07312, doi:10.1029/2011JA017454. ADS Abstract.

25. Yizengaw, E. (2012), Global Longitudinal Dependence Observation of the Neutral Wind and Ionospheric Density Distribution, Int. J. Geophys., vol. 2012, doi:10.1155/2012/342581, (Invited Paper) ADS Abstract.

24. Norman, R. J., P. L. Dyson, E. Yizengaw,, J. Le Marshall, C. Wang, B. Carter, D. Wen and K. Zhang (2012), Radio Occultation Measurements from the Australian Micro Satellite FedSat, IEEE Trans. Geo. Remote Sens., 10.1109/TGRS.2012.2194295. ADS Abstract.

23. Ngwira, C. M., L. McKinnell, P. J. Cilliers, E. Yizengaw,, and B. D. L. Opperman (2012), An investigation of ionospheric disturbances over South Africa during the magnetic storm on 15 May 2005, J. Adv. Space Res., 49(2), 327-335. ADS Abstract.

22. Yizengaw, E., M. B. Moldwin, A. Mebrahtu, B. Damtie, E. Zesta, C. E. Valladares, and P. H. Doherty (2011), Comparison of storm time equatorial ionospheric electrodynamics in the African and American sectors, J. Atmos. Solar-Terr. Phys., 73(1), 156-163.

21. Yizengaw, E., M. B. Moldwin, Y. Sahai, and R. de Jesus (2009), Strong Post-Midnight Equatorial Ionospheric Anomaly Observations during Magnetically Quiet Periods, J. Geophys. Res., 114, A12308, doi:10.1029/2009JA014603. ADS Abstract.

20. Yizengaw, E., and M. B. Moldwin (2009), African Meridian B-field Education and Research (AMBER) Array, Earth Moon Planet,104(1), 237-246, doi:10.1007/s11038-008-9287-2. ADS Abstract

19. Amory-Mazaudier, C., S. Basu, O. Bock, A. Combrink, K. Groves, T. Fuller Rowell, P. Lassudrie-Duchesne, M. Petitdidier, and E. Yizengaw, (2009), The use of Global Positioning System to derive atmospheric water vapor distribution for environmental applications, Earth Moon Planet,104(1), 263-270, doi:10.1007/s11038-008-9273-8. ADS Abstract

18. Yizengaw, E., M. B. Moldwin, D. Galvan, B. A. Iijima, A. Komjathy, and A. Mannucci (2008), The global plasmaspheric TEC and its contribution to the GPS TEC, J. Atmos. Solar-Terr. Phys., 70, 1541-1548. ADS Abstract.

17. Yizengaw, E., J. Dewar, J. MacNeil, M. B. Moldwin, D. Galvan, J. Sanny, D. Berube, and Bill Sandel (2008), The occurrence of Ionospheric Signatures of Plasmaspheric Plumes over Different Longitudinal Sectors, J. Geophys. Res., 113, A08318, doi:10.1029/2007JA012925. ADS Abstract.

16. Moldwin, M. B., E. Yizengaw, , D. K. Scherrer,M. C. Rabellosoares, and P. Reiff (2008), AGU Scientists Host Teacher Workshop in Ethiopia, Eos, Vol. 89, No. 10, 4 March 2008. ADS Abstract. Documentary (movie), produced by Geoffrey Haines- Stiles and NASA’s Passport to Knowledge team.

15. Yizengaw, E., M. B. Moldwin, P. L. Dyson, E. A. Essex (2007), Using Tomography of GPS TEC to Routinely Determine Ionospheric Average Electron Density Profiles, J. Atmos. Solar-Terr. Phys., 69, 314–321. ADS Abstract.

14. Yizengaw, E., P. L. Dyson, and E. A. Essex (2006), Tomographic observations of the topside ionospheric density distributions using the GPS receiver on FedSat, Adv. Space Res., 38, 2318-2323. ADS Abstract.

13. Yizengaw, E., M. B. Moldwin, P. L. Dyson, B. J. Fraser, and S. K. Morley (2006), First Tomographic Images of Ionospheric Outflows, Geophys. Res. Lett., 33, L20102, doi:10.1029/2006GL027698. ADS Abstract (GRL COVER PAGE). (AGU JOURNAL HIGHLIGHTS).

12. Yizengaw, E., M. B. Moldwin, and D. Galvan (2006), Ionospheric signatures of a plasmaspheric plume over Europe, Geophys. Res. Lett., 33, L17103, doi:10.1029/2006GL026597. ADS Abstract

11. Yizengaw, E., M. B. Moldwin, A. Komjathy, and A. J. Mannucci (2006), Unusual topside ionospheric density response to the November 2003 superstorm, J. Geophys. Res., 111, A02308, doi:10.1029/2005JA011433. ADS Abstract

10. Yizengaw, E., H. Wei, M. B. Moldwin, D. Galvan, L. L. Mandrake, A. Mannucci, and X. Pi (2005), The correlation between mid-latitude trough and the plasmapause, Geophys. Res. Lett., 32, L10102, doi:10.1029/2005GL022954. ADS Abstract

9. Yizengaw, E., and M. B. Moldwin (2005), The altitude extension of the mid-latitude trough and its correlation with plasmapause position, Geophys. Res. Lett.,32, L09105, doi:10.1029/2005GL022854. ADS Abstract (GRL COVER PAGE). (AGU JOURNAL HIGHLIGHTS).

8. Yizengaw, E., M. Moldwin, P. L. Dyson, and T. J. Immel (2005), The Southern Hemisphere ionosphere and plasmasphere response to the interplanetary shock event of 29-31 October 2003, J. Geophys. Res.,110, A09S30, doi:10.1029/2004JA010920. ADS Abstract

7. Yizengaw, E., P. L. Dyson, E. A. Essex, and M. B. Moldwin (2005), Ionosphere dynamics over the Southern Hemisphere during the 31 March 2001 severe magnetic storm using multi-instrument measurement data, Ann. Geophys. 23(3), 707-721. ADS Abstract

6. Yizengaw, E., E. A. Essex, and R. Birsa (2004), The Southern Hemisphere and Equatorial region ionization response for September 22, 1999 severe magnetic storm, Ann. Geophys. 22(8), 2765-2773. ADS Abstract

5. Parkinson, M. L., P. L. Dyson, M. Pinnock, J. C. Devlin, M. R. Hairston, E. Yizengaw, and P. J. Wilkinson (2002), Signatures of the midnight open-closed magnetic field-line boundary during balanced dayside and nightside reconnection, Ann. Geophys., 20(10), 1617-1630. ADS Abstract

4. Yizengaw, E., C.M. Hall, A.H. Manson, & C.E. Meek (1999), Nonvalidation of mesospheric horizontal wind fluctuations derived from temperature data via comparison with MF radar wind measurements, J. Geophys. Res. 104(D22), 27565-27572. PDF

Pre-Reviewed Proceeding papers

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3. Yizengaw, E., P.L. Dyson, and E.A. Essex, Tomographic reconstruction of the ionosphere using ground-based GPS data in the Australian region, Workshop on Applications of Radio Science (WARS), Hobart, Australia, February 2004. Abstract PDF

2. Yizengaw, E., and E.A. Essex, Storm Time Seasonal Variation of TEC on the Southern Hemisphere Mid-Latitude Regions Using Signals from Gps Satellite, OIST-4 proceedings, 221-224, 2002. Abstract PDF

1. Yizengaw, E., and E.A. Essex, Use of GPS signals to study total electron content of the ionosphere during the geomagnetic storm on 22 September 1999 , Workshop on Applications of Radio Science (WARS), Blue Mountains, Australia, February 2002. PDF

Other publications

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Yizengaw, E., Imaging the Ionosphere, Ph.D. thesis, Department of Physics, La Trobe University, Australia, May 2004.

Yizengaw, E., Studies of temperature change in the mesosphere using OH-emissions: tools for monitoring climatic change, M.Sc. thesis, University of Tromso, Norway, May 1998.

Yizengaw, E., Measurement of Gamma ray emission using GeNa (Tl) detector, B.Sc. dissertation, Addis Ababa University, Ethiopia, July 1994.

Conference and Seminar Presentations

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2016

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Yizengaw, E. (2016), Imaging the global vertical density structure from the ground and space, Presented at the 19th International Beacon Satellite Symposium, Trieste, Italy, 27 June – 1 July

Yizengaw, E., E. Zesta, and M. B. Moldwin (2016), Impacts of ULF wave power on the Ionosphere, Presented at the 19th International Beacon Satellite Symposium, Trieste, Italy, 27 June – 1 July

Yizengaw, E. (2016), Imaging the Global Vertical Density Structure from the Ground and Space from FS3/COSMIC GPS Radio Occultation Observations, Presented at the 3rd International Conference on GPS Radio Occultation (ICGPSRO), Taipei, Taiwan, 9-11 March

Yizengaw, E. and B. Carter (2016), The Geomagnetically Induced Currents at the Equator Associated with the Interplanetary Shocks, Presented at the International Symposium on Project Toward the Solar-Terrestrial Environment Prediction, Nagoya, Japan, 13-14 Jan.

2015

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Yizengaw, E., M. Moldwin, and E. Zesta (2015), Understanding the Longitudinal Variability of Equatorial Electrodynamics using integrated Ground- and Space-based Observations, Presented at the 2015 Fall Meeting, AGU, San Francisco, Calif., 13-18 Dec.

Doherty, P., E. Yizengaw, E. Zesta, and M. Moldwin (2015), Impacts of ULF wave power on the Ionosphere, Presented at the 2015 Fall Meeting, AGU, San Francisco, Calif., 13-18 Dec.

Carter, B., Yizengaw, E., R. Pradipta, A. Halford, R. Norman, and K. Zhang (2015), Interplanetary Shocks and the Resulting Geomagnetically Induced Currents at the Equator (Invited), Presented at the 2015 Fall Meeting, AGU, San Francisco, Calif., 13-18 Dec.

Yizengaw, E., E. Zesta, M. B. Moldwin, F. Anad, A. Mebrahtu, C. M. Biouele, B. Rabiu, Z. Bamba, O. Obrou, and N. K. Tripathi (2015), The Correlation between the Longitudinal Dependence of Equatorial Irregularities and Electrodynamics, Presented at the 14th ISEA Meeting, Bahir Dar, Ethiopia, 19-23 Oct.

Yizengaw, E., E. Zesta, M. B. Moldwin, and B. Carter (2015), Small Scale Ionospheric Density Undulation: Is It Due to Gravity Wave or ULF Wave?, Presented at the 14th ISEA Meeting, Bahir Dar, Ethiopia, 19-23 Oct.

Yizengaw, E., J. Retterer, B. Carter, K. Groves, and R. Caton (2015), Postmidnight bubbles and scintillations longitudinal variability: possible forcing from lower atmosphere, Presented at the CEDAR workshop, Seattle, Washington, 21-25 June

Yizengaw, E., M. B. Moldwin, E. Zesta, and M. Magoun (2015), Global Magnetometer Network contribution for ICON mission, Presented at the CEDAR workshop, Seattle, Washington, 21-25 June

Yizengaw, E., E. Zesta, and M. B. Moldwin(2015), The ULF Wave Related Fluctuation of Equatorial Electrodynamics, Presented at the CEDAR workshop, Seattle, Washington, 21-25 June

Yizengaw, E., J. Retterer, B. Carter, K. Groves, R. Caton, and C. Bridgwood (2015), Post-midnight Bubbles Longitudinal Dependence , Presented at the 14th International Ionospheric Effects Symposium, Alexandria, Virginia, 12 - 14 May.

Yizengaw, E., and B. Carter (2015), Imaging the global vertical density structure from the ground and space, Presented at the 4th International Radio Occultation Group, Melbourne, Australia, 16 – 22 April

Yizengaw, E., J. Retterer, K. Groves, R. Caton, and P. Doherty (2015), Postmidnight bubbles and scintillations in the quiet-time June solstice: possible forcing from lower atmosphere, Presented at the URSI Mid-Atlantic Meeting, 18-25 May, Gran Canaria, Spain.

Yizengaw, E., and P. Doherty (2015), Imaging the global vertical density structure from the ground and space, Presented at the URSI Mid-Atlantic Meeting, 18-25 May, Gran Canaria, Spain.

Yizengaw, E., and J. Retterer1, B. Carter, K. Groves, R. Caton, and C. Bridgwood (2015), Post-midnight Bubbles Longitudinal Dependence, Presented at 14th International Ionospheric Effects Symposium, 12-14 May, Alexandria, VA.

Yizengaw, E., E. Zesta, M. B. Moldwin, R. Stoneback, and AMBER team (2015), The ULF Wave Related Fluctuation of Equatorial Electrodynamics and Its Longitudinal Variability, Presented at the Measurement Techniques in Solar and Space Physics, 20-24 April, Boulder, CO

2014

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Yizengaw, E., M. B. Moldwin, E. Zesta, C. M. Biouele, B. Damtie, A. Mebrahtu, B. Rabiu, C. F. Valladares, and R. Stoneback (2014), What controls Rayleigh-Taylor instability growth rate and the formation of bubbles? Presented at the 2014 Fall Meeting, AGU, San Francisco, Calif., 14-19 Dec.

Doherty, P., E. Yizengaw, and T. Fuller-Rowell (2014), Is Space Weather impact different over Africa, and if so why?, Presented at the 2014 Fall Meeting, AGU, San Francisco, Calif., 14-19 Dec.

Yizengaw, E.M. B. Moldwin, E. Zesta, C. M. Biouele, B. Damtie, B. Rabiu, C. F. Valladares, and R. Stoneback(2014), Is Space Weather impact the same at different longitudinal sectors, and if so why?, Presented at the 2014 SCOSTEP Symposium, 12 - 18 October, Xi’An, China.

Yizengaw, E.(2014), Space Weather and Ground- and Space-Based Multi-Instrument Observations, Presented at the 2014 UN expert meeting, 10 - 12 February, Vienna, Austria.

Yizengaw, E., E. E. Pacheco, E. Zesta, M. B. Moldwin, C. Valladares, P. Doherty, B. Damtie, A. Mebrahtu, C. M. Biouele, B. Rabiu, and F. Anad (2014), The Longitudinal Variability of Equatorial Irregularities and Electrodynamics, Presented at the 2014 ION ITM meeting, 27 - 29 January, San Diego, California..

2013

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Yizengaw, E., J. M. Retterer, E. Pacheco, P. Roddy, K. M. Groves, R. G. Caton, and P. Baki (2013), Post-midnight Bubbles and Scintillations in the Quiet-Time June Solstice, Abstract SA11C-05 presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 8-13 Dec.

Carter, B. A., E. Yizengaw, M. Francis, M. B. Terkildsen, R. A. Marshall, R. Norman, and K. Zhang (2013), The day-to-day occurrence of equatorial plasma bubbles measured from Vanimo, Papua New Guinea, Abstract SA21B-2026 presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 8-13 Dec.

Zesta, E., A. Boudouridis, E. Yizengaw, A. M. Jorgensen, T. L. Carranza-fulmer, M. B Moldwin, I. R. Mann, and P. J. Chi (2013), The dynamics of the plasmasphere boundary layer as determined by ground magnetometers, satellite observations, and modeling, Abstract SM43B-2313 presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 8-13 Dec.

Zou, S., M. B Moldwin, M. J. Nicolls, A. J. Ridley, A. J. Coster, E. Yizengaw, L. R. Lyons, and E. Donovan (2013), Magnetosphere-Ionosphere Coupling Processes in the Ionospheric Trough Region During Substorms, Abstract SM51C-2205 presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 8-13 Dec.

Yizengaw, E. and M. B. Moldwin (2013), The Plasmaspheric and SED Plumes Colocations and the Corresponding Electrodynamics Longitudinal Differences, Presented at the 2013 Mechanics of the Magnetospheric System and Effects on the Polar Regions meeting, Torres del Paine, Patagonia, Chile, 27 Oct. – 1 Nov.

Yizengaw, E., E. E. Pacheco, E. Zesta, M. B. Moldwin, C. Valladares, B. Damtie, A. Mebrahtu, C. M. Biouele, B. Rabiu, F. Anad, and P. Roddy (2013), The longitudinal variability of equatorial irregularities and electrodynamics, Presented at 2013 BEACON symposium, Bath, UK, 08-12 July.

Yizengaw, E., E. E. Pacheco, V. Paznukhov, E. Zesta, M. B. Moldwin, C. Valladares, B. Damtie, A. Mebrahtu, C. M. Biouele, B. Rabiu, F. Anad, P. Roddy, and R. Heelis (2013), The Longitudinal Variability of Equatorial Irregularities and Electrodynamics, Presented at 2013 C/NOFS Meeting, Albuquerque, NM, 11-14 March.

Pacheco, E. E., E. Yizengaw, R. A. Heelis, R.A. Stoneback, P. Roddy, C.E. Valladares, and R.Pfaff (2013), Longitudinal variability of equatorial bubbles and scintillation distribution, Presented at 2013 C/NOFS Meeting, Albuquerque, NM, 11-14 March.

Groves, K., C. Carrano, C. Bridgwood, D. Madden, W. McNeil, E. Yizengaw, R. Caton and P. Roddy (2013), Longitudinal Variations in the Characteristics of Equatorial Plasma Irregularities, Presented at 2013 C/NOFS Meeting, Albuquerque, NM, 11-14 March.

2012

...

 

Yizengaw, E., E. E. Pacheco, and C. E. Valladares (2012), Longitudinal and Seasonal Variation of Lunar tide strength, Abstract SA51B-2183 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-7 Dec.

Zesta, E., A. Boudouridis, A. M. Jorgensen, E. Yizengaw, P. J. Chi, M. B Moldwin, T. Carranza, I. R. Mann, W. R. Johnston, and G. R. Wilson (2012), Determination of the plasmapause boundary using ground magnetometer field line resonances, satellite observations, and modeling, Abstract SM33A-08 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-7 Dec. (Oral Talk)

Nigussie, M., S. M. Radicella, B. Damtie, B. Nava, and, and E. Yizengaw (2012), TEC ingestion into NeQuick 2 to model the topside electron density in the East-African ionosphere, Abstract SA41B-07 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-7 Dec. (Oral Talk)

Yumoto, K., Peter J. Chi, V. Angelopoulos, M. G. Connors, M. J. Engebretson, B. J. Fraser, I. R. Mann, D. K. Milling, M. B. Moldwin, C. T. Russell, C. Stolle, E. Tanskanen, M. Vallante, E. Yizengaw, and E. Zesta (2012), ULTIMA: Array of ground-based magnetometer arrays for monitoring magnetospheric and ionospheric perturbations on a global scale, Abstract SM14A-01 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-7 Dec. (Invited)

Zou, S., M. B Moldwin, M. J. Nicolls, A. J. Ridley, A. J. Coster, E. Yizengaw, L. R. Lyons, and E. Donovan (2012), Electrodynamics of the high-latitude trough: Its relationship with convection flows and field-aligned currents, Abstract SA24A-01 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-7 Dec. (Invited)

Yizengaw, E. and E. E. Pacheco (2012), The climatological and day-to-day longitudinal variability of the global ionospheric density distribution, Presented at Chapman Conference, AGU, Addis Ababa, Ethiopia, 12-16 Nov. (Invited)

Zesta, E., A. Boudouridis, J. Weygand, E. Yizengaw, P. Chi, M. B. Moldwin, and J. Wise (2012), Hemispherical dependence of magnetospheric energy injection, Presented at Chapman Conference, AGU, Addis Ababa, Ethiopia, 12-16 Nov. (Invited)

Moldwin, M., E. Yizengaw, A. Coster, and D. Hysell (2012), AMISR in the Africa: Scientific and Societal Importance, Abstract ST16-PS07-A019 presented at AOGS - AGU (WPGM) Joint Assembly, 13-17 August 2012, Singapore. (Oral Talk)

Yizengaw, E., E. Zesta, M. B. Moldwin, B. Damtie, A. Mebrahtu, C. E. Valladares, and R. F. Pfaff (2012), Longitudinal dependence of equatorial electrodynamics and ionospheric vertical density distribution, 39th COSPAR Scientific Assembly, C1.1-0028, 14-21 July 2012, Mysore, India.(Oral Talk) (Solicited)

Yizengaw, E., A. Coster, M. B. Moldwin, D. Hysell (2012), Placing AMISR Instrument in the African sector: Why and How?, 39th COSPAR Scientific Assembly, C0.3-0006, 14-21 July 2012, Mysore, India.(Oral Talk) (Solicited)

Yizengaw, E., E. Zesta, C. M. Biouele, M. B. Moldwin, A. Boudouridis, B. Damtie, A. Mebrahtu, F. Anad, R. F. Pfaff, and M. Hartinger (2012), ULF wave related equatorial electrojet fluctuations, 39th COSPAR Scientific Assembly, C1.3-0034, 14-21 July 2012, Mysore, India.(Oral Talk)

Yizengaw, E. (2012), Ground-based Instrumentations in Africa and its Scientific and Societal Benefits to the region, 39th COSPAR Scientific Assembly, PCB1-0008, 14-21 July 2012, Mysore, India.(Oral Talk)

Yizengaw, E., E. Zesta, C. M. Biouele, M. B. Moldwin, A. Boudouridis, B. Damtie, A. Mebrahtu, F. Anad, C. Mebane, and R. Pfaff (2012), Observations of ULF wave related equatorial electrojet and density fluctuations, ISEA meeting, Paracas, Peru, 12-16 March. (Oral Talk)

Yizengaw, E., M. Moldwin, E. Zesta, B. Damtie, A. Mebrhtu, C. Mabene, C. Valladares, B. Rabiu, and R. Pfaff (2012), Equatorial Ionospheric Density Distribution and the corresponding Electrodynamics difference between African and South American sectors, ISEA meeting, Paracas, Peru, 12-16 March. (Oral Talk)

Coster, A., E. Yizengaw, and M. Moldwin (2012), Radar Instrumentation in the African Sector: Why and How, ISEA meeting, Paracas, Peru, 12-16 March. (Oral Talk)

Pacheco, E. E. and E. Yizengaw (2012), The day-to-day longitudinal variability of the global ionospheric density distribution at low latitudes during low solar activity, ISEA meeting, Paracas, Peru, 12-16 March. (Oral Talk)

2011

...

 

Yizengaw, E., E. Zesta, M. Moldwin, B. Damtie, A. Mebrahtu, F. Anad, C. Mebane, and R. Pfaff (2011), Observations of ULF wave related equatorial electrojet and density fluctuations, Abstract SA13C-06 presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.(Oral Talk)

Sibanda, P., M. B Moldwin, S. Zou, E. Yizengaw (2011), COSMIC TEC tomographic vertical density reconstructions of the topside ionosphere and plasmasphere: Differences between the American and African sectors, Abstract SA32A-04 presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.(Oral Talk)

Anderson, D. and E. Yizengaw (2011), Magnetometer-inferred, Equatorial, Daytime Vertical ExB Drift Velocities Observed in the African Longitude Sector, Abstract SA51D-1982 presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.

Yizengaw, E. (2011), Introduction to Space Weather and its impact on technological systems, Second LISN meeting, San Paulo, Brazil, 7 - 11 November.(Invited Talk)

Yizengaw, E., E. Zesta, M. Moldwin, B. Damtie, A. Mebrahtu, C. Mebane, C. Valladares, and R. Pfaff (2011), Equatorial Electrodynamics and Ionospheric Density Distribution difference between African and South American sectors, Second LISN meeting, San Paulo, Brazil, 7 - 11 November.

Yizengaw, E., E. Zesta, M. Moldwin, B. Damtie, A. Mebrahtu, C. Mebane, C. Valladares, and K. Yumoto (2011), Comparing equatorial ExB vertical drift velocities and vertical density structures at three different Longitudes, 13th International Ionospheric Effects Symposium, Alexandria, Virginia, 17 - 19 May.

Yizengaw, E. (2011), Ground-based Instrumentations in African and their Scientific and Societal Benefits to the region, XXX URSI General Assembly, Istanbul, Turkey, 13 - 20 August. (Invited Talk)

Yizengaw, E. (2011), Space weather and our technological systems, IUGG XXIV Assembly, Melbourne, Australia, 28 June - 7 July. (Invited Talk)

Yizengaw, E. (2011), Equatorial Electrodynamics and the vertical density structure of the Ionosphere and Plasmasphere, Space Research Center, RMIT university, Melbourne, Australia, 30 June. (Invited Talk)

2010

...

 

Yizengaw, E., E. Zesta, M. B. Moldwin, C. E. Valladares, B. Damtie, A. Mebrahtu, C. M. Biouele, K. Yumoto, R. F. Pfaff, and R. A. Heelis (2010), The Longitudinal Variation of Equatorial Electrodynamics Observations, Abstract SA43C-09 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec. (Oral Talk)

Damtie, B., M. Negussie, S. Radichella, B. Nava, and E. Yizengaw (2010), Electrodynamics and temporal characteristics of the East African ionosphere inferred from ground-based observations, Abstract SA43C-02 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec. (Invited Talk)

Moldwin, M., P. Sibanda, S. Zou, and E. Yizengaw (2010), Understanding the dynamic ionospheric signature of the plasmapause, Abstract SA34A-03 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec. (Invited Talk)

Sterner, N., E. Zesta, A. Boudouridis, M. B. Moldwin, E. Yizengaw, and P. Chi (2010), The South American Meridional B-field Array (SAMBA) and Pc4-5 Wave Studies, Abstract SM11B-1752 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Yizengaw, E., M. Moldwin, E. Zesta, B. Damtie, A. Mebrahtu, F. Anad, C. Mabene, P. Kotze, K. Yumoto, and R. Pfaff (2010), Equatorial ionospheric electrodynamics observations in the African sector using recently deployed AMBER magnetometer networks, International Space Weather Initiative (ISWI) UN/NASA/JAXA Workshop, Helwan, Egypt, 6-10 November (Invited Talk)

Yizengaw, E. (2010), Step-by-Step GNSS TEC data Processing technique, The First International Space Weather Initiative (ISWI) summer school, 28 October – 4 November, Bahir Dar, Ethiopia. (Invited Lecture)

Yizengaw, E. (2010), Equatorial ionospheric electrodynamics observations in the African using recently deployed magnetometer and GPS networks, COSPAR, PCB1-0008-10, 18-24 July, Bremen, Germany. (Invited Talk)

Yizengaw, E., M. B. Moldwin, Y. Sahai, and R. de Jesus (2010), Quiet time Strong equatorial ionospheric anomaly observations during postmidnight sector, COSPAR, C11-0036-10., 18-24 July, Bremen, Germany. (Invited Talk)

Sterner, N., E. Zesta, A. Boudouridis, M. B. Moldwin, E. Yizengaw, and P. Chi (2010), The South American Meridional B-field Array (SAMBA) and Pc4-5 Wave Studies, COSPAR, COSPAR, D34-0021-10, 18-24 July, Bremen, Germany.

Yizengaw, E., M. B. Moldwin, E. Zesta, B. Damtie, A. Mebrahtu, F. Anad, R. F. Pfaff, and C. Valladares, (2010), Observations of ULF wave related equatorial electrodynamics fluctuations, BEACON satellite symposium, 7-11 June, Barcelona, Spain.(Oral Talk)

Amaeshi, L. L., C. S. Carrano, C. E. Valladares, C. T. Bridgwood, E. Yizengaw, R. Sheehan, P. H. Doherty, J. O Adeniyi, K. M. Groves, T. R. Pedersen (2010), Investigation of the temporal characteristics of TEC and l-band scintillation at the equatorial stations of Lagos and Ilorin in Nigeria during solar minimum, BEACON satellite symposium, 7-11 June, Barcelona, Spain.

Yizengaw, E., M. B. Moldwin, E. Zesta, B. Damtie, A. Mebrahtu, F. Anad, R. F. Pfaff, and M. Hartinger (2010), Observations of ULF wave related equatorial electrodynamics fluctuations, Workshop on C/NOFS Results and Equatorial Dynamics, 18-20 May, Breckenridge, CO, USA.

Valladares, C. E. and E. Yizengaw (2010), The low-latitude ionosphere sensor network (LISN): science plan and initial results, Workshop on C/NOFS Results and Equatorial Dynamics, Workshop on C/NOFS Results and Equatorial Dynamics, 18-20 May, Breckenridge, CO, USA.

Yizengaw, E. (2010), Introduction to Space Weather, Second Workshop on Satellite Navigation Science and Technology for Africa, 6 April - 23 April, ICTP, Trieste, Italy. (Invited lecture).

2009

...

 

Yizengaw, E., M. B. Moldwin, A. Mebrahtu, B. Damtie, R. F. Pfaff, E. Zesta, C. E. Valladares, and P. Doherty (2009), Equatorial ionospheric electrodynamics observations in the African and American longitudinal sectors, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract SA14A-06. (Oral Talk)

Carrano, C. S., E. Yizengaw, P. H. Doherty, C. T. Bridgwood, J. O. Adeniyi, L. L. Amaeshi, T. R. Pedersen, K. M. Groves, P. A. Roddy, and R. G. Caton (2009), Groundand Space-Based Observations of Ionospheric Irregularities over Nigeria during Solar Minimum, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract SA31B-1424.

Yizengaw, E., M. B. Moldwin, A. Mebrahtu, B. Damtie, F. Anad, and C. Mbane Biouele (2009), Observation of Equatorial Electrodynamics in Africa using AMBER Magnetometer Network, 2009 UN/NASA/ESA/JAXA IHY workshop, Daejeon, South Korea, 21-25 Sept.

Yizengaw, E., M. B. Moldwin, A. Mebrahtu, B. Damtie, F. Anad, and C. Mbane Biouele (2009), AMBER magnetometer array and the equatorial electrodynamics, IHY-Africa 2009 Workshop, Livingstone, Zambia, 8-12 June.

Yizengaw, E. and M. B. Moldwin (2009), The Benefits of Scientific Instrumentation in Africa, 2009 International Technical Meeting, 26-28 January, Disney's Paradise Pier Hotel, Anaheim, CA.

2008

...

 

Yizengaw, E., M. B. Moldwin, A. Mebrahtu, R. F. Pfaff, E. Zesta, and B. Damtie (2008), Equatorial Electrojet Observations in the African Continent, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract SA11A-1491.

Moldwin, M. B., E. Yizengaw, and Y. Sahai (2008), Strong post-midnight Equatorial Ionospheric Anomaly and Equatorial spread F Observations during magnetically quiet period, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract SA31B-07. (Oral Talk)

Hsu, T., R. McPherron, J. Weygand, O. Amm, Y. Ge, E. Yizengaw, and V. Angelopolous (2008), A Comparative Study of Magnetotail, Solar Wind and Ground Observations associated with Substorms and SMCs, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract SM23B-1702.

Yizengaw, E. and M. B. Moldwin (2008), Understanding the density structures of the ionosphere and plasmasphere, COSPAR, C11-0004-08. ADS Abstract.

Yizengaw, E. and M. B. Moldwin (2008), African Meridian B-field Education and Research (AMBER) Array, COSPAR, D12-0012-08. (Invited Talk). ADS Abstract.

Yizengaw, E. and M. B. Moldwin (2008), Multi-instrument observations of the ionospheric and plasmaspheric density structure, Eos Trans. AGU, 89(23), Jt. Assem. Suppl., Abstract SA43A-03. (Invited Talk). ADS Abstract.

Yizengaw, E. and M. B. Moldwin (2008), IHY objectives in the African ionospheric irregularities observation campaign, Eos Trans. AGU, 89(23), Jt. Assem. Suppl., Abstract SH53A-09. (Oral Talk). ADS Abstract.

Scherrer, D. K, M. Moldwin, M. Rabella-Soares, P. Reiff, C. Sumners, and E. Yizengaw (2008), Teaching Teachers in Ethiopia, Eos Trans. AGU, 89(23), Jt. Assem. Suppl., Abstract ED31B-05. ADS Abstract.

Yizengaw, E. (2008), Multi-Instrument Observations to Mitigate Space Weather Impacts on our Communication and Navigation Systems, UCLA, IGPP seminar, 26 February. (Invited Talk)

Yizengaw, E. (2008), Multi-instrument observations to mitigate space weather impacts on technological systems, Air Force Research Laboratory, Hanscom AFB, Boston, 5 February. (Invited Talk)

2007

...

 

Yizengaw, E. and M. Moldwin (2007), AMBER and AGREES projects, IHY-Africa Space Weather Science and Education Workshop, Addis Ababa, Ethiopia, 12-16 November . (Oral Talk)

Yizengaw, E. (2007), Space weather impacts on our communication and navigation systems, Naval Research Laboratory, Washington DC, 7 September. (Invited Talk)

Yizengaw, E. and M. Moldwin (2007), Coordinated ground-based and satellite observations of magnetosphere-ionosphere coupling process, IUGG XXIV Assembly, Perugia, Italy, 2–13 July (Oral Talk)

Yizengaw, E. and M. Moldwin (2007), Multi-instrument observations of inner-magnetospheric density structures and dynamics, CEDAR-DASI Workshop, Santa Fe, New Mexico, 24-29 June (Oral Talk, CEDAR/GEM Post-Doc Report)

Yizengaw, E. and M. Moldwin (2007), The role of the plasmasphere in the dynamics of ionospheric density structures, Eos Trans. AGU, 88(23), Jt. Assem. Suppl., Abstract SM24A-03, Acapulco, Mexico, 22–25 May . (Invited Talk)

Galvan, D. A., E. Yizengaw, M. Moldwin, G. Hajj, T. Mannucci, and B. Sandel (2007), TI: Comparison of EUV Brightness With Line-of-Sight Total Electron Content in the Earth's Plasmasphere, Eos Trans. AGU, 88(23), Jt. Assem. Suppl., Abstract SM24A-04, Acapulco, Mexico, 22–25 May .

Moldwin, M. and E. Yizengaw (2007), Development of a 3D topside ionosphere-plasmasphere density model using LEO-Satellite GPS TEC tomography, presented at the LWS Geostorm CDAW and Conferen, Florida Tech - Melbourne, FL, 5-9 March .

Yizengaw, E., M. Moldwin, and D. Galvan (2007), Ionospheric Signatures of a Plasmaspheric Plume Over Europe, presented at the Chapman Conference on Mid-latitude Ionospheric Dynamics and Disturbances, Yosemite National Park, California, USA, 3-6 January . (Oral Talk)

2006

...

 

Yizengaw, E. (2006), Combining multi-instrument data to obtain a 3D inner-magnetospheric density model: an important tool to improve our way of life, presented to the La Trobe University Space physics Seminar, December. (Oral Talk)

Dewar, J., J. MacNeil, E. Yizengaw, D. Galvan, D. Berube, M. B. Moldwin, J. Sanny (2006), Ionospheric Signatures of Plasmaspheric Plumes over Different Longitudinal Sectors: A Comprehensive Study, Eos Trans. AGU,87(52), Fall Meet. Suppl., Abstract SA41A-1404. ADS Abstract

Yizengaw, E., T. Hsu, M. B. Moldwin, R. McPherron, D. Galvan, A. Komjathy, and A. Mannucci (2006), An Investigation of Total Electron Content (TEC) Perturbations during Storm-Time Substorms and Non-Storm Substorms, Eos Trans. AGU,87(52), Fall Meet. Suppl., Abstract SA41A-1405. ADS Abstract

Yizengaw, E. (2006), Application of Tomographic Imaging Technique to image MI coupling, The Second UN/NASA Workshop on the International Heliophysical Year and Basic Space Sciences, Bangalore, India , 27 November - 1 December. (Invited Talk)

Yizengaw, E. (2006), Space weather impacts on our communication and navigation systems monitored by ground- and space-based instruments, Australian Institute of Physics 17th National Congress, 3 – 8 December. (Invited Keynote Address)

Moldwin, M. B.and E. Yizengaw (2006), Everything but the kitchen sink: Physical models, ULF resonance, GPS TEC, multi-diagnostic-multi-satellite in situ, and EUV imaging data combined to create a 3D inner magnetospheric density model, presented to the UC-Riverside IGPP Seminar, September.

Yizengaw, E. and M. B. Moldwin (2006), Studying the Dynamics of Magnetosphere-Ionosphere (M-I) Coupling by Imaging the Plasma Density Structures of the Inner Magnetosphere, 36th COSPAR Scientific Assembly, Beijing, China, 16 – 23 July, Paper#: C1.1-0012-06. (Oral Talk) ADS Abstract

Yizengaw, E. and M. B. Moldwin (2006), Ionospheric signatures of a plasmaspheric plume over Europe, Eos Trans. AGU, 87(36), Jt. Assem. Suppl., Abstract SA43C-06. (Oral Talk)

Yizengaw, E. (2006), Space Weather effect on our communication and navigation system, ICTP-COST-USNSWP-CAWSES-INAF-INFN International Advanced School on Space Weather, Trieste, Italy, 2 - 19 May. (Oral Talk)

Yizengaw, E., M. B. Moldwin, P. L. Dyson, and B. J. Fraser, (2006), Imaging Magnetosphere-Ionosphere Coupling Using Tomographic Reconstruction Technique, Yosemite Workshop, 7 - 10 February.

2005

...

 

Yizengaw, E., M. B. Moldwin, A. J. Mannucci, and A. Komjathy, (2005), Unusual topside ionospheric density response to the November 2003 superstorm, Eos Trans. AGU, 86(52), Fall meeting, Suupl., Abstract SA21A-0268. ADS Abstract

Mann, I. R., D. K. Milling, M. B. Moldwin, Yizengaw, E., (2005), Ground-based Magnetometer Array Science for IHY: Opportunities for an Array in Africa within the UNBSS Developing Nations Small Instrument Program, Eos Trans. AGU, 86(52), Fall meeting, Suupl., Abstract SM33D-01. ADS Abstract

Yizengaw, E., M. B. Moldwin, H. Wei, D. Galvan, L. Mandrake, A. Mannucci, and X. Pi (2005), The correlation between mid-latitude trough and the plasmapause position: First time global comparison, IAGA 2005 Scientific Assembly, Toulouse, France, 18 - 29 July .

Moldwin, M. B. E. Yizengaw, and H. Wei (2005), Plasmasphere dynamics during storms and its role in modulating the ring current and radiation belts, IAGA 2005 Scientific Assembly (invited paper), Toulouse, France, 18 - 29 July .

Yizengaw, E. and M. B. Moldwin (2005), The altitude extension of the mid-latitude trough and its correlation with plasmapause position, Joint GEM/CEDAR workshop, Santa Fe, New Mexico, 25 June - 1 July . (Oral Talk)

H. Wei, E. Yizengaw, D. Galvan, and M. B. Moldwin (2005), The correlation of the mid-latitude trough with the plasmapause: GPS TEC and IMAGE EUV, GEM/CEDAR Joint meeting, Santa Fe, New Mexico, 26 June - 1 July .

Hsu,T-S, E. Yizengaw, M. B. Moldwin, and R. L. McPherron (2005), An Investigation of Total Electron Content (TEC) Perturbations during Sawtooth Events, GEM/CEDAR Joint meeting, Santa Fe, New Mexico, 25 June - 1 July .

Yizengaw, E., H. Wei, M. B. Moldwin, D. Galvan, L. Mandrake, A. Mannucci, X. Pi, and B. Sandel (2005), The Correlation Between Mid-latitude Trough and the Plasmapause, Eos Trans. AGU, 86(18), Jt. Assem., Suupl., Abstract SA41A-08. ADS Abstract

2004

...

 

Yizengaw, E., M. B. Moldwin, P. L. Dyson, and T. J. Immel, (2004), The southern hemisphere ionosphere and plasmasphere response to the interplanetary shock event of 29 - 31 October, Eos Trans. AGU, 85(47), Fall Meeting, Suupl., Abstract SA21B-0354. ADS Abstract

Yizengaw, E., P. L. Dyson, and E. A. Essex (2004), Tomographic observations of the topside ionospheric density distributions using the GPS receiver on FedSat, COSPAR Scientific Assembly, Paris, France, 18-25 July . (Oral Talk) ADS Abstract

Yizengaw, E., P. L. Dyson, and E. A. Essex (2004), Tomographic reconstruction of the ionosphere and plasmasphere using ground and/or space based GPS receivers, Geospace Environment Modelling (GEM) international conference, Snowmass, Aspen, Colorado, USA, June .

Yizengaw, E., P. L. Dyson, and E. A. Essex (2004), Tomographic reconstruction of the ionosphere using ground-based GPS data in the Australian region, Workshop on Applications of Radio Science (WARS), Hobart, Australia, February . (Won the best student presentation prize of the conference). PPS

2003

...

 

Yizengaw, E., and E. A. Essex (2003), Multi instrument observations of ionospheric electron density, CRC for Satellite System conference, Adelaide, Australia, February . (Oral Talk)

2002

...

 

Essex, E. A., and E. Yizengaw (2002), Southern Hemisphere Total Electron Content of The Ionosphere During The Geomagnetic Storm of 13-16 July 2000, EGS XXVII General Assembly, Nice, 21-26 April, abstract #179 . ADS Abstract

Yizengaw, E., and E. A. Essex (2002), Storm Time Seasonal Variation of TEC on the Southern Hemisphere Mid-Latitude Regions Using Signals from Gps Satellite, 4'th Oersted International Science Team Conference, Copenhagen, Denmark, September.

Essex, E. A., and E. Yizengaw (2002), Seasonal Effects of the Storm Time Variations of the Latitudinal Distribution of Ionospheric Total Electron Content in Equatorial and Southern Hemisphere Mid and High Latitude Regions, European Geophysical Society, XXVII General Assembly, Nice, France, April .

Yizengaw, E., and E. A. Essex (2002), Total electron content of the ionosphere during the geomagnetic storm for the 13-16 July 2000, CRC for Satellite System conference, Canberra, Australia, February . (Oral Talk)

2001

...

 

Yizengaw, E., and E. A. Essex (2001), Occultation studies of the ionosphere using global positioning system (GPS), CRC for Satellite System workshop, Newcastle, Australia, February (Oral Talk)

Departmental Group Seminar Presentations

...

 

Yizengaw, E. (2013), Instrument Deployment Experiences in Africa from the AMBER Magnetometer Network Perspective, ISR Seminar Series, Boston College, 22 January .

Yizengaw, E. (2011), The day-to-day and seasonal variability of equatorial Electrodynamics in the African and American sectors, ISR Seminar Series, Boston College, 20 January .

Yizengaw, E. (2009), Equatorial Ionospheric Anomaly and its triggering mechanisms, IGPP, UCLA, 16 January .

Yizengaw, E. (2004), Imaging the Ionosphere and Plasmasphere Using Tomographic Reconstruction Technique, IGPP, UCLA, 22 October .

Yizengaw, E. (2004), Tomographic reconstruction of the ionosphere using ground and/or space based GPS receivers, Space Physics Department, La Trobe University, March .

Yizengaw, E., and E. A. Essex (2003), Imaging the ionosphere, Space Physics Department, La Trobe University, March .

Yizengaw, E., and E. A. Essex (2002), Storm time seasonal variation of TEC in the Southern Hemisphere using signals from GPS satellites, Space Physics Department, La Trobe University, July .

Yizengaw, E., and E. A. Essex (2001), TEC of the ionosphere during the geomagnetic storm on April 7, 2000, Space Physics Department, La Trobe University, June .

Last update 25 July 2013

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