Results 41 to 50 of about 593 (173)

THIN ICE AREA EXTRACTION IN THE SEASONAL SEA ICE ZONES OF THE NORTHERN HEMISPHERE USING ASMR2 DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Sea ice has an important role of reflecting the solar radiation back into space. In addition, the heat flux of ice in thin ice areas is strongly affected by the ice thickness difference. Therefore, ice thickness is one of the most important parameters of
K. Cho, K. Miyao, K. Naoki
doaj   +1 more source

AMSR2 all-sky radiance assimilation and its impact on the analysis and forecast of Hurricane Sandy with a limited-area data assimilation system

Tellus: Series A, Dynamic Meteorology and Oceanography, 2016
A method to assimilate all-sky radiances from the Advanced Microwave Scanning Radiometer 2 (AMSR2) was developed within the Weather Research and Forecasting (WRF) model's data assimilation (WRFDA) system.
Chun Yang, Zhiquan Liu, Jamie Bresch, Syed R. H. Rizvi, Xiang-Yu Huang, Jinzhong Min   +5 more
doaj   +1 more source

Retrieving Snow Depth Information From AMSR2 Data for Qinghai–Tibet Plateau

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Passive microwave data have been extensively used for snow depth (SD) inversion, but their accuracy has large error in the Qinghai-Tibet Plateau (QTP). Thus, there is still room for improvement in regional SD inversion.
Jianshun Wang, Xiaodong Huang, Yunlong Wang, Tiangang Liang   +3 more
doaj   +1 more source

Coupled observation‐operator approximations in outer‐loop coupling data assimilation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We present a methodology for coupled variational data assimilation that allows the effect of coupled observation operators whilst maintaining separate minimisations across model components. This allows us to constrain the atmosphere, ocean, and sea‐ice components of our coupled model directly from satellite radiances. We illustrate the system in action
P. A. Browne, P. de Rosnay, A. J. Geer, S. Quesada‐Ruiz, T. Scanlon, E. Villeneuve   +5 more
wiley   +1 more source

Improving heavy precipitation forecasts through phase‐aware nonlinear bias correction of all‐sky infrared radiances using cloud top temperature differences

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study proposes a phase‐aware bias correction framework for all‐sky infrared radiance assimilation. Cloud top temperature differences between observations and model background fields are used to identify cloud‐phase mismatch and cold‐cloud regimes.
Jiwon Hwang, Dong‐Hyun Cha, Myong‐In Lee, SangSeo Park, Yonghan Choi, Ki‐Hong Min   +5 more
wiley   +1 more source

Validation of Four Satellite-Derived Soil Moisture Products Using Ground-Based In Situ Observations over Northern China

Remote Sensing, 2022
Accurately obtaining the spatial distribution of soil moisture and its variability are the basis for the land-atmosphere interaction study. We investigated the fidelity of four satellite-based soil moisture products (AMSR2, CCI, SMAP, and SMOS) using in ...
Weicheng Liu, Jixin Wang, Falei Xu, Chenrui Li, Tao Xian   +4 more
doaj   +1 more source

Critical constraints to ecological buffering in a rapidly changing Arctic: A long‐term seabird study

Journal of Animal Ecology, EarlyView.
Drawing on two decades of research in East Greenland, this study shows that little auks, key seabird indicators of Arctic ecosystem health, can adapt to rapid environmental change through behavioural flexibility. However, increasing storms and mercury pollution are pushing resilience to its limits, providing an early warning of broader Arctic ...
David Grémillet, Françoise Amélineau, Ann M. A. Harding, Jérôme Fort   +3 more
wiley   +1 more source

A synergistic use of AMSR2 and MODIS images to detect saline soils (Study Area: Iran)

Comptes Rendus. Géoscience, 2020
Soil salinity is a critical environmental problem especially in arid and semiarid regions. Then, the objective of this study is to detect saline soils by synergistic use of the Advanced Microwave Scanning Radiometer 2 (AMSR2) and the Moderate Resolution ...
Merrikhpour, Mohammad Hossein, Rahimzadegan, Majid   +1 more
doaj   +1 more source

Evaluation of SMAP, SMOS, and AMSR2 Soil Moisture Products Based on Distributed Ground Observation Network in Cold and Arid Regions of China

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Long-term surface soil moisture (SM) data are increasingly needed in water budget and energy balance analysis of watersheds. The performance of nine remotely sensed SM products from Advanced Microwave Scanning Radiometer 2 (AMSR2), Soil Moisture and ...
Zengyan Wang, Tao Che, Tianjie Zhao, Liyun Dai, Xiaojun Li, Jean-Pierre Wigneron   +5 more
doaj   +1 more source

Drivers of 2024 Record Low Sea Ice in Eastern Hudson Bay: A Satellite Era Perspective

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 21, 16 November 2026.
Abstract By late May 2024, Hudson Bay (HB) reached record‐low sea ice extent (SIE) and sea ice concentration (SIC), which has been attributed to the persistent easterly winds in May 2024. This study further investigates the role of easterly winds as well as broader contributing factors.
Richard Dworak, Yinghui Liu, Jeffrey R. Key, Xuanji Wang, Walter N. Meier   +4 more
wiley   +1 more source