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Research Spending & Results

Award Detail

Awardee:JOHNS HOPKINS UNIVERSITY, THE
Doing Business As Name:Johns Hopkins University
PD/PI:
  • Elsayed R Talaat
  • (240) 228-3971
  • elsayed.talaat@jhuapl.edu
Co-PD(s)/co-PI(s):
  • Robin J Barnes
Award Date:08/19/2009
Estimated Total Award Amount: $ 1,353,113
Funds Obligated to Date: $ 1,353,113
  • FY 2009=$1,353,113
Start Date:09/15/2009
End Date:09/30/2013
Transaction Type:Grant
Agency:NSF
Awarding Agency Code:4900
Funding Agency Code:4900
CFDA Number:47.050
Primary Program Source:040101 RRA RECOVERY ACT
Award Title or Description:Collaborative Research: The SuperDARN Upper Atmosphere Facility - Operations, Community Support, and Science from the Polar Cap to Mid-latitudes
Federal Award ID Number:0946902
DUNS ID:001910777
Parent DUNS ID:001910777
Program:Upper Atmospheric Facilities

Awardee Location

Street:1101 E 33rd St
City:Baltimore
State:MD
ZIP:21218-2686
County:Baltimore
Country:US
Awardee Cong. District:07

Primary Place of Performance

Organization Name:Johns Hopkins University Applied Physics Laboratory
Street:11100 Johns Hopkins Rd.
City:Laurel
State:MD
ZIP:20723-6099
County:Laurel
Country:US
Cong. District:03

Abstract at Time of Award

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The Super Dual Auroral Radar Network (SuperDARN) is a network of HF radars that provide global-scale and continuous measurements of the high latitude ionosphere and upper atmosphere in both the northern (14 radars) and southern (7 radars) hemispheres. SuperDARN utilizes coherent radar backscatter techniques to track the ExB drift of ionospheric plasma. The observations can be combined to generate patterns of plasma circulation that express fundamental aspects of the coupling of energy from the solar wind into the magnetosphere-ionosphere-atmosphere system. Information on electric field dynamics and plasma structuring is routinely available on spatial scales of a few tens of kilometers and temporal scales of seconds. The radar data also generate information on the occurrence and characteristics of ionospheric irregularities, atmospheric gravity waves and TIDs, and neutral winds near the mesopause. SuperDARN is an international collaboration involving the funding agencies of a dozen countries. The SuperDARN Upper Atmosphere Facility (UAF) operates four of the radars and provides essential technical support to the collaboration in the areas of radar operating software, web data access, and data distribution. U.S. researchers gain access to the entire dataset through association with SuperDARN researchers and are supported with interpretive analysis and collaboration. Significant scientific findings have been reported in areas as diverse as ionospheric convection, M-I coupling, ULF pulsations, plasma structuring, and atmospheric tides and planetary waves. The project is a collaboration between Virginia Tech and the Johns Hopkins University Applied Physics Laboratory (JHU/APL). Virgina Tech maintains and upgrades the radars and explores technical innovation while JHU/APL oversees software and data distribution functions. The group at Virginia Tech is student-centered activity with an emphasis on education and training while JHU/APL provides key software and web services. The project research and data products take advantage of the recent expansion of the network to polar and mid-latitudes and the development of enabling technologies. The research program is directed towards an improved understanding of the coupling of energy from the solar wind to Earth's upper atmosphere and the impacts on the space environment. Earth is buffeted by the solar wind, which interacts in complicated ways with the geomagnetic field to produce large-scale plasma motions within the upper atmosphere. These motions are a key source of information on the coupling processes. SuperDARN is a system of HF radars that image these motions, producing large scale maps of the plasma circulation that are widely used by the research community for both research and applications. This project supports the operation of four radars and the roles performed by the groups at Virginia Tech and JHU/APL in the international SuperDARN collaboration. The overall research goal is to increase our understanding of disturbance effects in Earth space environment from the polar cap to mid-latitudes and to furnish critical measurements of conditions in the upper atmosphere to the U.S. research community. The project activities will also engage students in training for space science research and engineering.

Publications Produced as a Result of this Research

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Kunduri, B. S. R., J. B. H. Baker, J. M. Ruohoniemi, L. B. N. Clausen, A. Grocott, E. G. Thomas, M. P. Freeman, and E. R. Talaat "An examination of inter-hemispheric conjugacy in a subauroral polarization stream" J. Geophys. Res.,, v., 2012, p.. doi:10.1029/2012JA017784 

Ohtani, S., H. Korth, S. Wing, E. R. Talaat, H. U. Frey, and J. W. Gjerloev "The double auroral oval in the dusk-midnight sector: Formation, mapping and dynamics" J. Geophys. Res., v., 2012, p.. doi:10.1029/2011JA017501 

Zhu, X; Yee, JH; Swartz, WH; Talaat, ER; Coy, L "A Spectral Parameterization of Drag, Eddy Diffusion, and Wave Heating for a Three-Dimensional Flow Induced by Breaking Gravity Waves" JOURNAL OF THE ATMOSPHERIC SCIENCES, v.67, 2010, p.2520. doi:10.1175/2010JAS3302.  View record at Web of Science

Clausen, L. B. N.,?E. R. Talaat, et al "Large-scale observations of a subauroral polarization stream by midlatitude SuperDARN radars: Instantaneous longitudinal velocity variations" J. Geophys. Res., v.117, 2012, p.. doi:10.1029/2011JA017232 

Makela, JJ; Miller, ES; Talaat, ER "Nighttime medium-scale traveling ionospheric disturbances at low geomagnetic latitudes" GEOPHYSICAL RESEARCH LETTERS, v.37, 2010, p.. doi:10.1029/2010GL04592  View record at Web of Science

Zhu, X; Yee, JH; Swartz, WH; Talaat, ER; Coy, L ""A Spectral Parameterization of Drag, Eddy Diffusion, and Wave Heating for a Three-Dimensional Flow Induced by Breaking Gravity Waves"" JOURNAL OF THE ATMOSPHERIC SCIENCES, v., 2010, p.. doi:10.1175/2010JAS3302 

Talaat, ER; Lieberman, RS ""Direct observations of nonmigrating diurnal tides in the equatorial thermosphere"" GEOPHYSICAL RESEARCH LETTERS, v.37, 2010, p.. doi:10.1029/2009GL04184 

Ohtani, S., H. Korth, S. Wing, E. R. Talaat, H. U. Frey, and J. W. Gjerloev "The double auroral oval in the dusk-midnight sector: Formation, mapping and dynamics," J. Geophys. Res, v.117, 2012, p.. doi:10.1029/2011JA017501 

Greenwald, RA; Oksavik, K; Barnes, R; Ruohoniemi, JM; Baker, J; Talaat, ER "First radar measurements of ionospheric electric fields at sub-second temporal resolution" GEOPHYSICAL RESEARCH LETTERS, v.35, 2008, p.. doi:10.1029/2007GL03216  View record at Web of Science

Makela, JJ; Miller, ES; Talaat, ER ""Nighttime medium-scale traveling ionospheric disturbances at low geomagnetic latitudes"" GEOPHYSICAL RESEARCH LETTERS, v.37, 2010, p.. doi:10.1029/2010GL04592 

Azeem, SMI; Talaat, ER; Sivjee, GG; Yee, JH "Mesosphere and lower thermosphere temperature anomalies during the 2002 Antarctic stratospheric warming event" ANNALES GEOPHYSICAE, v.28, 2010, p.267. View record at Web of Science

Kunduri, B. S. R., J. B. H. Baker, J. M. Ruohoniemi, L. B. N. Clausen, A. Grocott, E. G. Thomas, M. P. Freeman, and E. R. Talaat "An examination of inter-hemispheric conjugacy in a subauroral polarization stream" J. Geophys. Res, v.117, 2012, p.. doi:10.1029/2012JA017784 

Azeem, SMI; Talaat, ER; Sivjee, GG; Yee, JH ""Mesosphere and lower thermosphere temperature anomalies during the 2002 Antarctic stratospheric warming event"" ANNALES GEOPHYSICAE, v.28, 2010, p..

Talaat, ER; Lieberman, RS "Direct observations of nonmigrating diurnal tides in the equatorial thermosphere" GEOPHYSICAL RESEARCH LETTERS, v.37, 2010, p.. doi:10.1029/2009GL04184  View record at Web of Science

Sarris, TE; Liu, W; Li, X; Kabin, K; Talaat, ER; Rankin, R; Angelopoulos, V; Bonnell, J; Glassmeier, KH "THEMIS observations of the spatial extent and pressure-pulse excitation of field line resonances" GEOPHYSICAL RESEARCH LETTERS, v.37, 2010, p.. doi:10.1029/2010GL04412  View record at Web of Science

Sarris, TE; Liu, W; Li, X; Kabin, K; Talaat, ER; Rankin, R; Angelopoulos, V; Bonnell, J; Glassmeier, KH ""THEMIS observations of the spatial extent and pressure-pulse excitation of field line resonances"," GEOPHYSICAL RESEARCH LETTERS, v.37, 2010, p.. doi:10.1029/2010GL04412 

Clausen, L. B. N.,?E. R. Talaat, et al. "Large-scale observations of a subauroral polarization stream by midlatitude SuperDARN radars: Instantaneous longitudinal velocity variations" J. Geophys. Res.,, v., 2012, p.. doi:10.1029/2011JA017232 

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