A5079784398- Ionosphere and magnetosphere dynamics
- Atmospheric Ozone and Climate
- Solar and Space Plasma Dynamics
- Meteorological Phenomena and Simulations
- Geomagnetism and Paleomagnetism Studies
- Climate variability and models
- Earthquake Detection and Analysis
- Geophysics and Gravity Measurements
- Atmospheric aerosols and clouds
- Astro and Planetary Science
- Ocean Waves and Remote Sensing
- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Migraine and Headache Studies
- Calibration and Measurement Techniques
- Neurological Complications and Syndromes
- Impact of Light on Environment and Health
- Tropical and Extratropical Cyclones Research
- Distributed systems and fault tolerance
- Uterine Myomas and Treatments
- Oceanographic and Atmospheric Processes
- GNSS positioning and interference
- Satellite Communication Systems
- Health, Environment, Cognitive Aging
- Health Literacy and Information Accessibility
Laboratory for Atmospheric and Space Physics
2019-2025
University of Colorado Boulder
2019-2025
Xiamen University of Technology
2025
Wuhan University
2013-2024
Renmin Hospital of Wuhan University
2023-2024
OriginWater (China)
2024
National Oceanic and Atmospheric Administration
2024
NOAA Weather Prediction Center
2024
Computational Physics (United States)
2024
Neurobehavioral Research Laboratory and Clinic
2023
Abstract After days of intense solar activity, active region AR3664 launched seven CMEs toward Earth producing an extreme G5 geomagnetic storm commencing at 17:05 UT on 10 May 2024. The impacted power grids, disrupted precision navigational systems used by farming equipment, and generated aurora seen around the globe. produced remarkable effects composition, temperature, dynamics in Earth's thermosphere that were observed NASA's Global‐scale Observations Limb Disk (GOLD) mission are reported...
Abstract The NASA Global‐scale Observations of the Limb and Disk (GOLD) mission has flown an ultraviolet‐imaging spectrograph on SES‐14, a communications satellite in geostationary orbit at 47.5°W longitude. That instrument observes Earth's far ultraviolet (FUV) airglow ~134–162 nm using two identical channels. observations performed include limb scans, stellar occultations, images sunlit nightside disk from 6:10 to 00:40 universal time each day. Initial analyses reveal interesting...
Abstract The geomagnetic storm on February 3, 2022 caused the loss of 38 Starlink satellites Space‐X. Global‐scale Observations Limb and Disk (GOLD) observations Multi‐Scale Atmosphere Geospace Environment (MAGE) model simulations are utilized to investigate thermospheric composition responses Space‐X storm. percentage difference GOLD observed O N 2 column density ratio (∑O/N ) between time (February Day‐of‐Year [DOY] 34) quiet (DOY 32) shows a depletion region in local noon sector mid‐high...
Abstract New ionosphere and electrodynamics modules have been incorporated in the thermosphere eXtension of Whole Atmosphere Community Climate Model (WACCM‐X), order to self‐consistently simulate coupled atmosphere‐ionosphere system. The first specified dynamics WACCM‐X v.2.0 results are compared with several data sets, Thermosphere‐Ionosphere‐Electrodynamics General Circulation (TIE‐GCM), during deep solar minimum year. Comparisons Thermosphere Ionosphere Mesosphere Energetics Dynamics...
Abstract Observations from the recently launched Global‐Scale of Limb and Disk (GOLD) instrument on geostationary SES‐14 communications satellite reveal a substantial response mean state thermosphere to Sudden Stratospheric Warming (SSW) event in early January 2019. The observed O/N column density depletion more than 10% starts at onset SSW, maximizes time stratospheric wind reversal, recovers toward end SSW. A connection between SSW thermospheric composition was previously predicted by...
We examine characteristics of the seasonal variation thermospheric composition using column number density ratio ∑
Abstract Each day the Global‐scale Observations of Limb and Disk imager observes equatorial ionization anomaly (EIA) near sunset from ∼10°E to ∼80°W geographic longitude. Most images cover ∼45° longitude (∼3 hr), most longitudes are observed multiple times. Monthly averages EIA crests' latitude (EIA lats) versus during March, September, December 2020 have been analyzed. The lats reflect combined influence winds, solar radiation, fields (electric magnetic) in region. Winter solstice differs...
The extended Canadian Middle Atmosphere Model (eCMAM) was recently run in a nudged mode using reanalysis data from the ground to 1 hPa for period of January 1979 June 2010 (hence name eCMAM30). In this paper, eCMAM30 temperature is used examine background mean temperature, spectrum diurnal tides, and climatology migrating tide Dw1 three nonmigrating tides De3, Dw2, Ds0 stratosphere, mesosphere, lower thermosphere. model results are then compared tidal derived Sounding Broadband Emission...
We present the global distribution, seasonal, and interannual variations of lower mesospheric inversion layers (MILs) using SABER (Sounding Atmosphere Broadband Emission Radiometry) temperature data. show that both characteristics formation mechanisms large spatiotemporal‐scale MILs are latitude dependent. At low latitudes, monthly zonal mean amplitude exhibits a semi‐annual cycle reaches maximum ∼40 K in spring secondary ∼30 autumn. On equator, oscillations background diurnal‐migrating‐tide...
Abstract The Thermosphere‐Ionosphere‐Mesosphere Electrodynamics General Circulation Model (TIME‐GCM) is used to theoretically study the 6 day wave effects on ionosphere. By introducing a perturbation with zonal number 1 at model lower boundary, TIME‐GCM reasonably reproduces in temperature and horizontal winds mesosphere thermosphere region during vernal equinox. E wind dynamo exhibits prominent oscillation that directly modulated by wave. Meanwhile, significant local time variability...
Abstract Water vapor (H 2 O) measurements made by the Sounding of Atmosphere using Broadband Emission Radiometry (SABER) instrument between 2002 and 2018 Aura Microwave Limb Sounder (MLS) 2004 are analyzed to determine linear trend solar cycle response H O in stratosphere mesosphere. Both SABER MLS show a rapid global increase 5–6% per decade lower after 2001 drop. The increasing zonal mean at 40°N is consistent with Boulder frost point hygrometer data stratosphere. distribution trends...
Abstract. This paper presents characteristics of quasi-two-day waves (QTDWs) in the mesosphere and lower thermosphere (MLT) between 52° S N from 2002 to 2011 using TIMED/SABER temperature data. Spectral analysis suggests that dominant QTDW components at mid-high latitudes Southern Hemisphere (SH) Northern (NH) are (2.13, W3) (2.04, W4), respectively. The most remarkable is W3), which happened southern summer 2002–2003 32° 60 90 km altitude. Its downward phase propagation indicates upward...
Abstract Using the thermosphere‐ionosphere‐mesosphere electrodynamics general circulation model simulations, we investigate short‐term ionospheric variability due to child waves and altered tides produced by nonlinear interaction between 6 day wave migrating tides. Via Fourier spectral diagnostics least squares fittings, [21 h, W2] [13 W1] waves, generated of with DW1 SW2, respectively, are found play leading roles on subdiurnal (e.g., ±10 m/s in ion drift ~50% N m F 2 ) region vertical...
Abstract A recent 31 year simulation (1979–2010) by extended Canadian Middle Atmosphere Model (eCMAM30) and the 14 (2002–2015) observation Thermosphere Ionosphere Mesosphere Dynamics/Sounding of using Broadband Emssion Radiometry (TIMED/SABER) are utilized to investigate temperature response 11 solar cycle on mesosphere. Overall, zonal mean responses tend increase with height, amplitudes order 1–2 K/100 flux unit (1 sfu = 10 −22 W m −2 Hz −1 ) below 80 km 2–4 in mesopause region (80–100 km)...
Abstract This study employs a troposphere to lower thermosphere assimilation model data set generated by the Whole Atmosphere Community Climate Model with provided Data Assimilation Research Test Bed (WACCM + DART) explore sources, sinks, and propagation characteristics of quasi 6‐day wave (Q6DW) in year 2007. WACCM DART reproduces burst‐like Q6DW compares well Sounding using Broadband Emission Radiometry Thermosphere, Ionosphere, Mesosphere Energetics Dynamics Doppler Interferometer...
Abstract This study aims to determine the latitudinal and topographical dependencies of turbulent flow by applying Thorpe analysis abundant high‐resolution radiosonde data sets. Results show that energy dissipation rates are lognormally distributed with average central values 2.7 × 10 −4 2.9 m 2 /s 3 in troposphere stratosphere, respectively. Moreover, they exhibit similar vertical variations at different latitudes from lower free up tropopause region. Dissipation quantitatively comparable...
We adopt a broad spectral data analyzing method to derive the continuous altitude variability of inertial gravity wave (GW) parameter properties in range 2–25 km from 11 year (1998–2008) radiosonde observations over 92 United States stations locating latitude 5°N 75°N. To our knowledge, this is first time presenting latitudinal and altitudinal lower atmospheric GW parameters. The presented distribution parameters indicates that energy troposphere stratosphere peaks, respectively, at middle...
Abstract An observational study of nonlinear interaction between the quasi 2 day wave (QTDW) and diurnal semidiurnal tides from meteor radar measurements at Maui is reported. The show a short‐term variation with QTDW activity. amplitude tide opposite to that QTDW. minimum amplitudes appear several days later than maximum QTDW, obviously strengthens when drops small amplitudes. bispectrum analysis shows significant interactions among QDTW tidal components. two 16 h modes periods 16.2 15.8...
Abstract. In the current work, temperature and wind data from Thermosphere Ionosphere Mesosphere Energetics Dynamics (TIMED) satellite during years 2002–2007 were used to describe seasonal variations of westward propagating 6.5-day planetary wave in mesosphere lower thermosphere (MLT). Thermospheric composition TIMED ionospheric total electron content (TEC) International Global Navigation Satellite System (GNSS) Service then employed carry out two case studies on effect this dissipating...
Abstract Combined Thermosphere‐Ionosphere‐Mesosphere Energetics and Dynamics (TIMED)/TIMED Doppler interferometer horizontal winds, Global Positioning System Total Electron Content maps, Constellation Observing for Meteorology, Ionosphere, Climate electron density profiles are utilized to study the westward zonal wavenumber 1 quasi‐6‐day planetary wave in both neutral atmosphere F region ionosphere under solar minimum conditions 2009. It is found that (meridional) wind perturbations maximize...
The recently launched Global-scale Observations of the Limb and Disk (GOLD) Mission observed prominent quasi-16-day oscillations (Q16DOs) in OI 135.6-nm nightglow from equatorial ionization anomaly (EIA) region during 26 November 2018 to 25 January 2019. Meanwhile, enhanced concurrent wave (Q16DW) activity was middle atmosphere by Sounding Atmosphere using Broadband Emission Radiometry (SABER) instrument. This implies that F-region ionosphere couples with lower through large-scale waves. A...
Abstract The 2022 Tongan volcanic eruption released significant energy into the atmosphere. Tropospheric satellite images show that generated pressure waves traveled globally. Global Observation of Limb and Disk (GOLD) mission observed wave‐like thermospheric temperature perturbations (>100 K) from 12 to 16 UT. These perturbations' spatial curvatures arrival times are initially similar tropospheric wave‐fronts but differ significantly with eastward propagation. had a phase speed ∼300–400...
Abstract Leveraging observations by two NASA missions—GOLD (Global‐scale Observations of the Limb and Disk) ICON (Ionospheric Connection Explorer), we investigate concurrent responses thermospheric composition, temperatures, neutral winds to geomagnetic storm on 3–4 November 2021, as well their interplay at low middle latitudes. The synergetic reveal remarkable depletions up 60%–70% in GOLD O/N 2 , along with large enhancements temperatures poleward 30° thermosphere. Meridional from are...
Abstract. Relative to extensive studies of interactions between the quasi 2-day wave and tides, nonlinear interaction 16-day with tides was reported less, in particular diurnal tide. We present an observational study a possible event tide based on meteor radar measurement at Maui. An obvious can be observed from raw wind data. Its maximum meridional amplitude attain 18.0 m s−1 height 92 km during time our attention, which is larger than that previous reports. Sum difference are have rather...
Abstract The Global‐scale Observations of the Limb and Disk (GOLD) mission provides, for first time, a synoptic view thermospheric response to moderate geomagnetic storm at 30‐min cadence. observations showed that OI 135.6‐nm emission substantially decreased middle high latitudes, but it increased low latitudes. depletion pattern between 4 6 November 2018 was likely due strong upwelling high‐latitude thermosphere. deepest in brightness occurred near local noon ~300–400 R (~35% quiet time...