Results 61 to 70 of about 12,090 (214)

Assessment of CALIOP-Derived CCN Concentrations by In Situ Surface Measurements

Remote Sensing, 2022
The satellite-based cloud condensation nuclei (CCN) proxies used to quantify the aerosol-cloud interactions (ACIs) are column integrated and do not guarantee the vertical co-location of aerosols and clouds.
Goutam Choudhury, Matthias Tesche
doaj   +1 more source

Toward Closing the Hydroxyl Radical (OH) Budget: Assessing the Feasibility and Uncertainties in Constraining primary OH Production From Space

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract Recent progress in constraining the atmosphere's primary oxidant, the hydroxyl radical (OH), with machine learning (ML) and satellite data raises the intriguing possibility of also constraining individual OH chemical production and loss terms.
Daniel C. Anderson, Bryan N. Duncan, Amir H. Souri, Junhua Liu, Sarah Strode, Doyeon Ahn   +5 more
wiley   +1 more source

PSLRC-Net: A PolInSAR and Spaceborne LiDAR Fusion Method for High-Precision DEM Inversion in Forested Areas

Remote Sensing
The Digital Elevation Model (DEM) is widely used in fields such as geoscience and environmental management. However, the existing DEMs struggle to meet the current requirements for timeliness and accuracy, especially in forested areas where vegetation ...
Xiaoshuai Li, Huihua Hu, Xiaolei Lv, Zenghui Huang   +3 more
doaj   +1 more source

Observation and Coordination Needs for Current, Near‐Future, and Next Generation Earth‐Observing SAR Systems

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This paper summarizes an evaluation by experts of how coordination of Earth‐observing Synthetic Aperture Radar (SAR) missions among the world's space agencies could advance toward game‐changing scientific discoveries and fully realizing SAR's practical capability to address many issues facing society.
Cathleen E. Jones, Ake Rosenqvist, Björn Rommen, Magdalena Fitrzyk, Eric Rignot, Bernd Scheuchl, Yujie Zheng, Andrew Hooper, Mark Simons, Tomokazu Kobayashi, Paul Siqueira, Maurizio Santoro, Takeo Tadono, Laura Hess, Heather McNairn, Laura Frulla, Malin Johansson, Wolfgang Dierking, Line Rouyet, Annett Bartsch, Paco Lopez Dekker, Johnny A. Johannessen   +21 more
wiley   +1 more source

A Global Comparison of Direct and Legacy Effects of Drought on Ecosystem Productivity

Ecology Letters, Volume 29, Issue 5, May 2026.
We quantify the magnitude change in terrestrial gross primary production (GPP) globally in response to direct and long‐term (4 years) legacy effects of drought. We find that the direct effect causes significant GPP decreases in magnitude of −6% per year, while the legacy effect‐induced GPP change is overall weaker and non‐significant in the long run ...
Meng Liu, Steven A. Kannenberg, Josep Peñuelas, William R. L. Anderegg   +3 more
wiley   +1 more source

Estimation of Forest Stock Volume in Complex Terrain Using Spaceborne Lidar

Remote Sensing
In forest remote sensing monitoring of complex terrain, spaceborne lidar data has become a key technology for obtaining large-scale forest structure parameters due to its uniquethree-dimensional observation capabilities.
Yiran Zhang, Qingtai Shu, Xiao Zhang, Zeyu Li, Lianjin Fu   +4 more
doaj   +1 more source

Retrievals of thick cloud optical depth from the Geoscience Laser Altimeter System (GLAS) by calibration of solar background signal [PDF]

, 2008
Laser beams emitted from the Geoscience Laser Altimeter System (GLAS), as well as other spaceborne laser instruments, can only penetrate clouds to a limit of a few optical depths.
Chiu, J. Christine, Davis, Anthony B., Marshak, Alexander, Minnis, Patrick, Nguyen, Louis, Palm, Stephen P., Spangenberg, Douglas A., Spinhirne, James D., Wiscombe, Warren J., Yang, Yuekui   +9 more
core   +2 more sources

Anomalous Opaque Clouds Revealed by Collocated MODIS and CALIOP Retrievals

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract This paper examines discrepancies between cloud optical thickness (COT) retrievals from the Moderate Resolution Imaging Spectroradiometer (MODIS) cloud product, and cloud opacity measurements from the Cloud‐Aerosol Lidar with Orthogonal Polarization (CALIOP) lidar.
Adeleke Segun Ademakinwa, Chamara Rajakapshe, Zhibo Zhang   +2 more
wiley   +1 more source

Below‐Cloud CCN Concentrations Provide Better Constraints on the Twomey Effect Than Aerosol Optical Properties

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The primary uncertainty in anthropogenic climate forcing arises from a limited understanding of aerosol effects on cloud albedo, which in combination with other effects, is termed the radiative forcing from aerosol‐cloud interactions (RFaci).
Lan Gao, Jens Redemann, Emily D. Lenhardt, Benting Chen, Feng Xu, Richard Ferrare, Johnathan Hair, Amin Nehrir, Chris Hostetler, Taylor Shingler, Marta Fenn, Brian Cairns, Armin Sorooshian, Ian Chang   +13 more
wiley   +1 more source

Detecting Change in Forest Structure with Simulated GEDI Lidar Waveforms: A Case Study of the Hemlock Woolly Adelgid (HWA; Adelges tsugae) Infestation

Remote Sensing, 2020
The hemlock woolly adelgid (HWA; Adelges tsugae) is an invasive insect infestation that is spreading into the forests of the northeastern United States, driven by the warmer winter temperatures associated with climate change.
Peter Brehm Boucher, Steven Hancock, David A Orwig, Laura Duncanson, John Armston, Hao Tang, Keith Krause, Bruce Cook, Ian Paynter, Zhan Li, Arthur Elmes, Crystal Schaaf   +11 more
doaj   +1 more source