Explanipedia

The International Opportunities Fund for global change research Open

T. L. Killeen, Maria E Uhle, Ben A. van der Pluijm · 2012

Earthquakes, floods, and weather extremes are among a range of societal hazards that are increasingly studied by national and international researchers, but the absence of international collaboration and coordination is increasingly leadin…

NSF's Response to Gulf Oil Spill Open

T. L. Killeen · 2010

Under its statutory authority, the U.S. National Science Foundation (NSF) is using its Rapid Response Research (RAPID) funding mechanism to support research on the Deepwater Horizon oil spill. NSF issued a “dear colleague” letter on 27 May…

Spectral analysis of ionospheric electron density and mesospheric neutral wind diurnal nonmigrating tides observed by COSMIC and TIMED satellites Open

Qian Wu, S. C. Solomon, Ying‐Hwa Kuo, T. L. Killeen, Jiyao Xu · 2009

We use two‐dimensional spectral analysis method to extract diurnal eastward zonal wavenumber 3 (E3) and westward zonal wavenumber 2 (W2) nonmigrating tide in the mesospheric winds from TIMED TIDI instrument and ionosphere density from the …

Structure of the nonmigrating semidiurnal tide above Antarctica observed from the TIMED Doppler Interferometer Open

H. Iimura, S. E. Palo, Qian Wu, T. L. Killeen, S. C. Solomon , et al. · 2009

Spatial structure and temporal evolution of the nonmigrating semidiurnal tidal components over Antarctica are determined by analyzing horizontal wind measurements in the Mesosphere and Lower Thermosphere (MLT) collected using TIMED Doppler…

Diurnal nonmigrating tides from TIMED Doppler Interferometer wind data: Monthly climatologies and seasonal variations Open

Jens Oberheide, Qian Wu, T. L. Killeen, M. E. Hagan, R. G. Roble · 2006

TIMED Doppler Interferometer (TIDI) measurements of zonal and meridional winds in the mesosphere/lower thermosphere are analyzed for diurnal nonmigrating tides (June 2002 to June 2005). Climatologies of monthly mean amplitudes and phases f…

The two‐day wave in EOS MLS temperature and wind measurements during 2004–2005 winter Open

Varavut Limpasuvan, Dong L. Wu, M. Schwartz, Joe W. Waters, Qian Wu , et al. · 2005

Two‐day wave observations during January–March 2005 are reported using the recently launched Microwave Limb Sounder (MLS) aboard NASA's Earth Observing System Aura mission. Wave‐induced disturbances in temperature, water vapor, carbon mono…

A high‐latitude 8‐hour wave in the mesosphere and lower thermosphere Open

Qian Wu, N. J. Mitchell, T. L. Killeen, S. C. Solomon, P. T. Younger · 2005

We used simultaneous multimission Fabry Perot interferometer neutral wind, airglow intensity, and temperature observations at Resolute (75°N) and meteor radar neutral wind observation at Esrange (68°N) to study a wave event with a period o…

Polar cap observations of mesospheric and lower thermospheric 4‐hour waves in temperature Open

Yougun Won, Qian Wu, Y. M. Cho, G. G. Shepherd, T. L. Killeen , et al. · 2003

Lower thermospheric and upper mesospheric rotational temperatures have been derived from ground‐based measurements of the O 2 (0–1) and OH(6–2) nightglow emissions over Resolute Bay, Canada (74.68°N, 94.90°W) and OH(4–2) nightglow emission…

Mid‐latitude temperatures at 87 km: Results from multi‐instrument Fourier analysis Open

D. P. Drob, J. M. Picone, Stephen D. Eckermann, C. Y. She, J. F. Kafkalidis , et al. · 2000

Using a novel Fourier fitting method we combine two years of mid‐latitude temperature measurements at 87 km from the High Resolution Doppler Imager, the Colorado State University lidar, and the Peach Mountain Interferometer. After accounti…

Neutral winds in the lower thermosphere from Dynamics Explorer 2 Open

T. L. Killeen, Bruno Nardi, P. Purcell, R. G. Roble, T. J. Fuller‐Rowel , et al. · 1992

Doppler line profile measurements of the OI λ557.7 nm “green line” emission, made by the Fabry‐Perot interferometer on Dynamics Explorer 2, have provided altitude profiles of the meridional component of the lower‐thermospheric neutral wind…

Thermosphere and ionosphere dynamics during 20–30 March 1979 time period: Comparison of TIGCM calculated densities with observations Open

F. A. Marcos, R. G. Roble, T. L. Killeen · 1992

Longitudinally asymmetric transport of nitric oxide in the E-region Open

T. E. Cravens, T. L. Killeen · 1988

How close are ground-based Fabry-Perot thermospheric wind and temperature measurements to exospheric values? A simulation study Open

F. G. McCormac, T. L. Killeen, Bruno Nardi, Roger W. Smith · 1987

CEDAR: An aeronomy initiative Open

G. J. Romick, T. L. Killeen, D. G. Torr, Brian A. Tinsley, R. A. Behnke · 1987

A 3‐year process of committee deliberations and community‐wide annual workshops by scientists involved in aeronomical studies has led recently to the presentation of a final report to the National Science Foundation, outlining a comprehens…

The composition, structure, temperature and dynamics of the upper thermosphere in the polar regions during October to December 1981 Open

D. Rees, R. E. Gordon, T. J. Fuller‐Rowell, Mark F. Smith, G. R. Carignan , et al. · 1985

Auroral zone effects on hydrogen geocorona structure and variability Open

T. E. Moore, A. P. Biddle, J. H. Waite, T. L. Killeen · 1985

Neutral motions in the polar thermosphere for northward interplanetary magnetic field Open

T. L. Killeen, R. A. Heelis, P. B. Hays, N. W. Spencer, W. B. Hanson · 1985

On 24th November, 1982, The North‐South (B z ) component of the Interplanetary Magnetic Field (IMF) became positive for a period of about 11 hours reaching a relatively large and steady value of ∼25 nT. During this rare occurrence, the Dyn…

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