Results 31 to 40 of about 817 (178)

Effect of Structural Uncertainty in Passive Microwave Soil Moisture Retrieval Algorithm

Sensors, 2020
Passive microwave sensors use a radiative transfer model (RTM) to retrieve soil moisture (SM) using brightness temperatures (TB) at low microwave frequencies. Vegetation optical depth (VOD) is a key input to the RTM. Retrieval algorithms can analytically
Lanka Karthikeyan, Ming Pan, Dasika Nagesh Kumar, Eric F. Wood   +3 more
doaj   +1 more source

Land surface phenologies and seasonalities using cool earthlight in mid-latitude croplands

Environmental Research Letters, 2013
Phenology deals with timing of biotic phenomena and seasonality concerns temporal patterns of abiotic variables. Studies of land surface phenology (LSP) and land surface seasonality (LSS) have long been limited to visible to near infrared (VNIR ...
W G Alemu, G M Henebry
doaj   +1 more source

Satellite Remote Sensing of Snow Depth on Antarctic Sea Ice: An Inter-Comparison of Two Empirical Approaches

Remote Sensing, 2016
Snow on Antarctic sea ice plays a key role for sea ice physical processes and complicates retrieval of sea ice thickness using altimetry. Current methods of snow depth retrieval are based on satellite microwave radiometry, which perform best for dry ...
Stefan Kern, Burcu Ozsoy-Çiçek
doaj   +1 more source

A Novel Method for Long Time Series Passive Microwave Soil Moisture Downscaling over Central Tibet Plateau

Remote Sensing, 2022
The coarse scale of passive microwave surface soil moisture (SSM) is not suitable for regional agricultural and hydrological applications such as drought monitoring and irrigation management.
Hongtao Jiang, Sanxiong Chen, Xinghua Li, Jingan Wu, Jing Zhang, Longfeng Wu   +5 more
doaj   +1 more source

Evaluation of High‐Resolution CORDEX‐CMIP6 Ocean Temperature Simulations for the Great Barrier Reef

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract Longevity of the Great Barrier Reef (GBR) relies on specific oceanic and atmospheric conditions that are quickly deteriorating under climate change. While global climate models (GCMs) provide insights into large‐scale processes, they often lack the resolution to capture regional nuances affecting the GBR.
Sun W. Kim, Jozef Syktus, Marcus Thatcher, Ralph Trancoso   +3 more
wiley   +1 more source

Enabling Under Ice Glider Operations: A Backseat Driver Approach

Journal of Field Robotics, Volume 43, Issue 5, Page 3292-3311, August 2026.
ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang, Benjamin Allsup, Georgios Salavasidis, Stephen Woodward, Adeniyi Adenaya, Mike Smart, Alexis Johnson, Felipe Marques Dos Santos, Jake Ludgate, Daniel Matterson, Alvaro Lorenzo, J. Alexander Brearley, Alexander Brian Phillips   +12 more
wiley   +1 more source

Robust Regional Contrast but Penetration‐Sensitive Snow Thickness Over Sea Ice From Multi‐Winter Antarctic CRYO2ICE Observations

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Snow on Antarctic sea ice modulates albedo, thermodynamic growth, and snow–ice formation, yet remains a leading uncertainty in altimetry‐derived sea‐ice thickness. Here we use the post‐2022 CRYO2ICE configuration to derive along‐track winter snow thickness from ICESat‐2 laser and CryoSat‐2 Ku‐band radar freeboards over the Weddell and Ross ...
Xinlong Liu, Alexander D. Fraser, Rachel L. Tilling, Petra Heil, Stuart P. Corney   +4 more
wiley   +1 more source

A New Operational Snow Retrieval Algorithm Applied to Historical AMSR-E Brightness Temperatures

Remote Sensing, 2016
Snow is a key element of the water and energy cycles and the knowledge of spatio-temporal distribution of snow depth and snow water equivalent (SWE) is fundamental for hydrological and climatological applications.
Marco Tedesco, Jeyavinoth Jeyaratnam
doaj   +1 more source

Enhanced Retrieval of Spring Snow Depth Over Pan‐Arctic Sea Ice From AMSR2 Observations for 2013–2023 Using Multi‐Model Machine Learning

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Snow on sea ice modulates the Earth's radiation budget and sea ice mass balance, yet satellite retrievals of Arctic snow depth remain subject to substantial algorithmic uncertainty. We develop a multi‐model machine learning (ML) framework for retrieving spring snow depth over Arctic sea ice from Advanced Microwave Scanning Radiometer 2 (AMSR2).
Yi Zhou, Chentong Zhang, Alek Petty, Xianwei Wang, Ruibo Lei, Wenxuan Liu, Yu Zhang   +6 more
wiley   +1 more source

Increased Frequency, Duration, and Area of Winter Polynyas North of Greenland in a Warming Climate

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Polynyas play a crucial role in the polar marine ecosystems and climate system. Four winter polynya events north of Greenland have been observed, but the response of winter polynyas to climate warming remains unknown. This study investigates projected changes in winter polynyas in the Wandel Sea north of Greenland using the AWI‐CM3 climate ...
Qi Shu, Qiang Wang, Haibo Bi, Dmitry V. Sein, Zhenya Song, Fangli Qiao   +5 more
wiley   +1 more source