Results 41 to 50 of about 971 (130)

Potential soil moisture products from the aquarius radiometer and scatterometer using an observing system simulation experiment [PDF]

Geoscientific Instrumentation, Methods and Data Systems, 2013
Using an observing system simulation experiment (OSSE), we investigate the potential soil moisture retrieval capability of the National Aeronautics and Space Administration (NASA) Aquarius radiometer (L-band 1.413 GHz) and scatterometer (L-band, 1.260 ...
Y. Luo, X. Feng, P. Houser, V. Anantharaj, X. Fan, G. De Lannoy, X. Zhan, L. Dabbiru   +7 more
doaj   +1 more source

Diffusion‐Based Reconstruction of Western North Pacific Surface Winds From CYGNSS for Tropical Cyclone Analysis

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 10, October 2026.
Abstract Sea surface wind retrieval under extreme weather conditions is constrained by the sparse and irregular spatiotemporal sampling of Global Navigation Satellite System Reflectometry (GNSS‐R). This study presents a probabilistic wind field reconstruction framework for the Western North Pacific using Score‐Based Data Assimilation (SDA). A diffusion
Xinhai Han, Xiaohui Li, Jingsong Yang, Zeyi Niu, Guoqi Han, Naifeng Fu, Jiuke Wang, Wei Tao, Lotfi Aouf, Dake Chen   +9 more
wiley   +1 more source

THE SCATTEROMETER AS A PRESSURE SENSOR

Gayana, 2004
The UW Planetary Boundary Layer (PBL) model is used to derive surface pressure fields from scatterometer surface measurements. After a decade of comparison with NMC wind products, it is clear that the combination of the scatterometer and the PBL model ...
Robert A Brown, Jerome Patoux
doaj  

Impacts of Bogus Vortex Initialization Using Scatterometer-Derived 34 kt Wind Radii and Centers on Tropical Cyclone Forecasts

Remote Sensing
This study demonstrates the positive impact of scatterometer wind-based bogus vortex initialization on forecasts of Typhoon Doksuri (2023). In this scheme, the NCEP analysis vortex in the initial conditions is replaced with a bogus vortex.
Weixin Pan, Xiaolei Zou, Yihong Duan
doaj   +1 more source

Decreasing Translation Speed of Rapid Expansion Tropical Cyclones Over the Western North Pacific

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The overall destructiveness of tropical cyclones (TCs) depends not only on their intensity but also on storm size and translation speed, which together determine the spatial extent and duration of impacts. However, variations in translation speed of TCs undergoing rapid expansion (RE) over recent decades remain poorly understood.
Huilin Li, Xiaodong Tang
wiley   +1 more source

Improving Land Surface Model Soil Moisture Estimates Through Joint State‐Parameter Assimilation of In Situ Soil Moisture Observations

Meteorological Applications, Volume 33, Issue 5, September/October 2026.
This study presents the first application of joint state‐parameter assimilation on the JULES land surface model, ingesting field‐scale COSMOS‐UK soil moisture observations using an En‐Var hybrid technique. Results showed that jointly updating PTF constants and initial soil moisture conditions yielded superior forecasts compared to updating either ...
Ramesh Visweshwaran, Elizabeth Cooper, Sarah L. Dance   +2 more
wiley   +1 more source

Snow Thickness Estimation on First-Year Sea Ice from Late Winter Spaceborne Scatterometer Backscatter Variance

Remote Sensing, 2019
Ku- and C-band spaceborne scatterometer sigma nought (σ°) backscatter data of snow covered landfast first-year sea ice from the Canadian Arctic Archipelago are acquired during the winter season with coincident in situ snow-thickness ...
John Yackel, Torsten Geldsetzer, Mallik Mahmud, Vishnu Nandan, Stephen E. L. Howell, Randall K. Scharien, Hoi Ming Lam   +6 more
doaj   +1 more source

Toward an Improved Understanding of the Antarctic Coastal Zone and Its Contribution to Future Global Sea Level

Reviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract Understanding the coastal zone of the Antarctic Ice Sheet (AIS), where it interacts with the Southern Ocean and warmer air masses, is crucial for predicting Antarctica's influence on the global climate and sea level. This region has multiple tipping mechanisms that could trigger large, rapid, and potentially irreversible changes in the AIS ...
Kenichi Matsuoka, Geir Moholdt, Jennifer F. Arthur, Julien A. Bodart, Xiangbin Cui, Fausto Ferraccioli, René Forsberg, Vikram Goel, Tom A. Jordan, Felicity S. McCormack, Ruth Mottram, Hamish D. Pritchard, Calvin Shackleton, Kirsty J. Tinto, Fredrik Boberg, Marie G. P. Cavitte, Reinhard Drews, Pierre Dutrieux, Jörg Ebbing, Olaf Eisen, Hannes Eisermann, Alex S. Gardner, Chad A. Greene, Nicholas Holschuh, Stewart S. R. Jamieson, Byeong‐Hoon Kim, Naomi Krauzig, Bernd Kulessa, Carlton Leuschen, Jilu Li, Lu Li, Jonas Liebsch, Joseph A. MacGregor, Emma MacKie, Anirudha Mahagaonkar, Joséphine Maton, Mathieu Morlighem, Francisco Navarro, Peter D. Neff, Inès N. Otosaka, Frank Pattyn, Antonia Ruppel, Rebecca J. Sanderson, Hélène Seroussi, Andrew Shepherd, Matthew R. Siegfried, Thomas Slater, Arjen P. Stroeven, Michael Studinger, Thomas Teisberg, Ryan A. Venturelli, Jeremy P. Winberry, Chen Zhao, Lu An, Jonathan L. Bamber, Robin E. Bell, Robert G. Bingham, Johanna Brehmer‐Moltmann, Graeme Eagles, Jamin Greenbaum, Jorn Gronset, Won Sang Lee, Emmanuel Le Meur, Lenneke M. Jong, Katrin Lindbäck, Sven Lidström, Mareen Lösing, Masahiro Minowa, Mayuri Pandey, Yogesh Ray, Mirko Scheinert, Dustin M. Schroeder, Thorsten Seehaus, Kaian Shahateet, Daniel Steinhage, Xueyuan Tang, Drew Taylor, Hannah Verboncoeur, Junjun Yang, Duncan A. Young   +79 more
wiley   +1 more source

The Role of Assimilating Deep Learning‐Enhanced AMSR‐E/2 Observations in European Soil Moisture Reanalysis

Water Resources Research, Volume 62, Issue 9, September 2026.
Abstract Soil moisture is an essential climate variable that controls the exchange of water and energy between land and atmosphere, directly impacting land surface feedbacks. Satellite‐derived soil moisture provides valuable large‐scale information, but long‐term applications are limited by sensor lifespans, retrieval noise, and systematic biases ...
Visakh Sivaprasad, Johannes Keller, Yorck Ewerdwalbesloh, Anne Springer, Harrie‐Jan Hendricks Franssen, Harry Vereecken, Carsten Montzka   +6 more
wiley   +1 more source

Examination of smooth surfaces roughness using angle scatterometer. Part 1. The method of measurement. The measurement instrument [PDF]

Biuletyn Wojskowej Akademii Technicznej, 2015
The basic parameters of surface roughness are described in this article. The method of calculation of these parameters from measurement of BSDF function characterizing scatter from surface is shown.
Andrzej Pawlata
doaj   +1 more source