Results 111 to 120 of about 917 (218)

Migrating and Nonmigrating Neutral Mass Density Tides From GRACE‐FO Observations for Solar Minimum Conditions

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract This study presents the migrating and nonmigrating thermospheric neutral mass density tides from the Gravity Recovery And Climate Experiment Follow‐On (GRACE‐FO) observations under solar minimum conditions (year 2020). The observed densities are first mapped to a reference altitude of 500 km using an empirical model (NRLMSIS 2.0) to remove the
Mukta Neogi, Jens Oberheide
wiley   +1 more source

Saturation Effects in Narrowband Resonance Lidar Measurements, Part 1: Theoretical Consideration of Sodium, Iron, and Helium Lidar Systems

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Atmospheric resonance lidars targeting metallic species in the mesosphere and lower thermosphere have yielded insights into the dynamics of the middle and upper atmosphere for over 50 years. Recently, the technique has been extended to the metastable helium layer, which reaches up to 1,000 km or above.
C. Geach, B. Kaifler
wiley   +1 more source

Saturation Effects in Narrowband Resonance Lidar Measurements, Part 2: Potassium Lidar Systems and Experimental Results

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Resonance lidars targeting the D1 ${D}_{1}$ resonance line of potassium at 770 nm have been employed over the past 5 decades to yield numerous insights into the dynamics of the middle and upper atmosphere. It has long been recognized that these measurements can be severely affected by nonlinear behavior in the scattering process, that is ...
C. Geach, B. Kaifler, Josef Höffner, G. Baumgarten   +3 more
wiley   +1 more source

Analysis of Smoke Transport Over the Northeast US Caused by Wildfires in Canada During June 2023—Leveraging the HRRR‐Smoke Model Predictions and Remote Sensing Observations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract The intensification of wildland fires across portions of Canada in early June 2023 led to significant smoke transport into the eastern United States, resulting in poor air quality and reduced visibility. Significant degradation of air quality was evident from PM2.5 surface measurements as the smoke plume moved southwards, which was confirmed ...
Y. L. Pichugina, E. J. Strobach, A. W. Brewer, R. Ahmadov, P. S. Bhattacharjee, E. P. James, A. J. Schnell, B. Carroll, S. Baidar, S. Sandberg   +9 more
wiley   +1 more source

Influence of Model Resolution on Simulated Extreme Wildfire Plume Heights During the 2019/2020 Australian New Year Event

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract Pyrocumulonimbus (pyroCb) events, smoke‐infused thunderstorm clouds triggered by intense wildfires under suitable meteorological conditions, are an efficient pathway for transporting smoke to elevated altitudes. In some cases, smoke reaches the upper troposphere and lower stratosphere region, where it can persist for extended time periods and ...
Tabea Unser, Lisa Janina Muth, Corinna Hoose, Gholam Ali Hoshyaripour   +3 more
wiley   +1 more source

Global Characterization of Stratospheric Sulfate Aerosols by the Atmospheric Chemistry Experiment (ACE)

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract Stratospheric sulfate aerosol (SSA) is an important part of the Earth's climate system. SSA climate impact is determined in part by particle composition, which has been measured from orbit. The weight percent of sulfuric acid in SSA has been determined from atmospheric infrared transmittance spectra recorded with the Atmospheric Chemistry ...
Peter Bernath, Manish Bhusal, Michael Lecours, Chris Boone   +3 more
wiley   +1 more source

Benchmarking Precompensated Current-Modulated Diode-Laser-Based Differential Absorption Lidar for CO₂ Gas Concentration Measurements at kHz Rate. [PDF]

Sensors (Basel)
Zanetti G, Rodrigo PJ, Engelbrecht Larsen H, Pedersen C.   +3 more
europepmc   +1 more source

Trends and Sensitivities of Low‐Cloud Cover and Top Height From Spaceborne Lidar Observations

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Low clouds effectively cool the Earth by reflecting incoming solar radiation. Detecting low‐level clouds with passive satellite sensors can be ambiguous, whereas active remote sensing instruments directly measure cloud‐top height. Here, we analyze 14 years of spaceborne lidar observations to assess trends in the occurrence of low‐level clouds ...
M. Tesche, H. Andersen, G. Choudhury, T. Goren   +3 more
wiley   +1 more source

Demonstration of Photonic Integrated Circuit Seed Laser System: Toward Space-Based Water Vapor and Methane Differential Absorption Lidar. [PDF]

ACS Photonics
Dostart N, Nehrir A, Sherman J, Kebort D, Cooper T, Liu TZ, Shimamura A, Harper D, Antill C, Barton-Grimley R, Johansson L, Morrison G, Mashanovitch M.   +12 more
europepmc   +1 more source

Rapid Morphological Changes in the Intertidal Zone of the Ganges‐Brahmaputra Delta Revealed by SWOT Altimetry Mission

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Intertidal zones of the Ganges‐Brahmaputra (GB) delta are among the most active coastal environments worldwide, and quantifying their morphological evolution remains challenging due to rapid change and scarce in situ observations. This study presents a satellite‐based direct quantification of intertidal sediment volume change in the Meghna ...
Nushrat Yeasmin, Laurent Testut, Valérie Ballu, Md Jamal Uddin Khan   +3 more
wiley   +1 more source