نتایج جستجو برای: amsr2

تعداد نتایج: 145  

Journal: :Journal of JSCE 2023

This study focuses on a dielectric model for wet soils that relates the complex permittivity and water content of bulk to obtain soil moisture retrievals from satellite observations. Contrary earlier examinations have been made Soil Moisture Ocean Salinity (SMOS) mission European Satellite Agency (ESA) at 1.4 GHz (L-band microwave range), this targets 6.9 (C-band) Advanced Microwave Scanning Ra...

Journal: :Remote Sensing 2022

Soil moisture is a key variable of the climate system. Microwave remote sensing has become an essential means obtaining soil because unique advantages its all-day and all-weather observation capability. Theoretically, low-frequency C-band observations are highly suitable for retrieval their high sensitivity to at vegetation roots. However, quality suffers from radio frequency interference (RFI)...

Journal: :Frontiers in Environmental Science 2022

The dual-polarized ratio (DPR) algorithm is a new that enable calculation of Arctic sea ice concentration from the 36.5-GHz channel sensor Advanced Microwave Scanning Radiometer for EOS/Advanced 2 (AMSR-E/AMSR2). In this paper, we demonstrate results data using DPR (DPR-AMSR) are evaluated and compared with other eight products respect to differences in concentration, area, extent. On pan-Arcti...

Journal: :IEEE Transactions on Geoscience and Remote Sensing 2023

Passive microwave (PM) and synthetic aperture radar (SAR) observations are essential tools for providing long time series of sea-ice cover information, including concentration (SIC) extent (SIE). Large uncertainties have been revealed in PM SIC/SIE products the marginal ice zone (MIZ) during melting season, where fusion with SAR data could be effective improving accuracy due to its high spatial...

Journal: :Remote Sensing 2022

Recent developments in passive microwave remote sensing have provided an effective tool for monitoring global soil moisture (SM) observations on a spatiotemporal basis, filling the gap of uneven in-situ measurement distribution. In this paper, four SM products from three bands (L, C, and X) are evaluated using observations, over dry–wet cycle agricultural (mostly paddy/wheat crops) critical zon...

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