Results 51 to 60 of about 4,719 (221)

Towards operational assimilation of surface‐sensitive microwave radiances over land at Environment and Climate Change Canada: Investigation of key factors using a 1D‐EnVar framework

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
The study evaluates five factors affecting the assimilation of surface‐sensitive Advanced Microwave Sounding Unit‐A (AMSU‐A) radiances over land, including the simultaneous estimation of surface emissivity and the standard set of state variables, to improve numerical weather prediction (NWP) at Environment and Climate Change Canada (ECCC).
Zheng Qi Wang   +4 more
wiley   +1 more source

Coherence Tomography for Boreal Forest: Camparison with HUTSCAT Scatterometer Measurements [PDF]

open access: yes, 2008
In this paper we report on X- and L-band polarization coherence tomography in boreal forest structure mapping. We take advantage of HUTSCAT ranging scatterometer measurements and compare E-SAR derived vertical structure profiles with measured vertical ...
Praks, Jaan   +3 more
core  

Polar Sea Ice Detection Using a Rotating Fan Beam Scatterometer

open access: yesRemote Sensing, 2023
Scatterometers are dedicated to monitoring sea surface wind vectors, but they also provide valuable data for polar applications. As a new type of scatterometer, the rotating fan beam scatterometer delivers a higher diversity of incidence angles and more ...
Liling Liu   +3 more
doaj   +1 more source

Exploiting Aeolus winds in a regional numerical weather prediction model

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Aeolus measured winds have proven to be beneficial for global models. However, demonstrating positive impact for limited‐area models has been a challenge so far. For the first time, we have demonstrated a statistically significant positive impact of Aeolus winds in a limited‐area model by using the 4DVar data assimilation technique and the most recent ...
Gert‐Jan Marseille   +3 more
wiley   +1 more source

Polar Applications of Spaceborne Scatterometers [PDF]

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017
Wind scatterometers were originally developed for observation of near-surface winds over the ocean. They retrieve wind indirectly by measuring the normalized radar cross section (σo ) of the surface, and estimating the wind via a geophysical model function relating σo to the vector wind.
openaire   +2 more sources

Satellite Velocity Correction Method of Ocean Current Retrieval for a Spaceborne Doppler Scatterometer

open access: yesRemote Sensing, 2023
For a spaceborne pencil-beam rotating Doppler scatterometer, its precision in measuring the ocean surface motion depends on the Doppler centroid of the received signals.
Jingyu Zhang, Xiaolong Dong, Di Zhu
doaj   +1 more source

Soil Moisture Impact on Convective Initiation

open access: yesWater Resources Research, Volume 62, Issue 7, July 2026.
Abstract The influence of soil moisture on convective storm initiation remains an open question, with previous studies showing conflicting results regarding whether storms preferentially form over wet or dry soils. Here, we analyze the soil moisture‐convection relationship using satellite observations across North America, Africa, and Australia from ...
Faisal AlNasser   +2 more
wiley   +1 more source

Uncertainty in scatterometer derived vorticity [PDF]

open access: yes2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
A more versatile and robust technique is developed for determining area averaged surface vorticity based on vector winds from swaths of remotely sensed wind vectors. This technique is discussed in detail and compared to two previous studies that focused on early development of tropical systems. The error characteristics of the technique are examined in
openaire   +1 more source

Scientific Developments and the EPS-SG Scatterometer [PDF]

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017
Peer ...
Ad Stoffelen   +9 more
openaire   +5 more sources

Super Resolution Mapping of Scatterometer Ocean Surface Wind Speed Using Generative Adversarial Network: Experiments in the Southern China Sea

open access: yesJournal of Marine Science and Engineering
This paper designed a Generative Adversarial Network (GAN)-based super-resolution framework for scatterometer ocean surface wind speed (OSWS) mapping.
Xianci Wan   +6 more
doaj   +1 more source

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