Monitoring Soil Moisture and Freeze/Thaw State Using C-band Imaging Radar
نویسنده
چکیده
منابع مشابه
Quikscat Backscatter Sensitivity on Landscape Freeze/thaw State over Alectra Sites in Alaska from 2000 to 2008: Application to Smap Validation Planning
The NASA Soil Moisture Active and Passive (SMAP) mission is dedicated to measurement of global soil moisture and boreal land surface freeze/thaw state [1]. The satellite will carry radar (active) and radiometer (passive) L-band instruments that will perform simultaneous and coincident measurements of the Earth’s surface. The combination of data from the two instruments will allow unprecedented ...
متن کاملA Change Detection Algorithm for Retrieving High-resolution Surface Soil Moisture from Smap L-band Radar and Radiometer Observations
Soil moisture is a critical hydrological variable that links the terrestrial water, energy and carbon cycles. Global and regional observations of soil moisture are needed to estimate the water and energy fluxes at the land surface, to quantify the net carbon flux in boreal landscapes, to enhance weather and climate forecast skill and to develop improved flood prediction and drought monitoring c...
متن کاملTheoretical Modeling and Analysis of L- and P-band Radar Backscatter Sensitivity to Soil Active Layer Dielectric Variations
Freeze-thaw (FT) and moisture dynamics within the soil active layer are critical elements of boreal, arctic and alpine ecosystems, and environmental change assessments. We evaluated the potential for detecting dielectric changes within different soil layers using combined Land P-band radar remote sensing as a prerequisite for detecting FT and moisture profile changes within the soil active laye...
متن کاملThe Soil Moisture Active Passive Experiments (SMAPEx): Towards Soil Moisture Retrieval from the SMAP Mission
21 NASA's Soil Moisture Active Passive (SMAP) mission will carry the first combined spaceborne L-22 band radiometer and Synthetic Aperture Radar (SAR) system with the objective of mapping near-23 surface soil moisture and freeze/thaw state globally every 2-3 days. SMAP will provide three soil 24 moisture products; (i) high-resolution from radar (~3km), (ii) low-resolution from radiometer 25 (~3...
متن کاملRecovery of Soil Moisture Active Passive (SMAP) Instrument’s Active Measurements via Coupled Dictionary Learning
NASA’s Soil Moisture Active Passive (SMAP) satellite mission combines a passive L-band radiometer and an active Synthetic Aperture Radar (SAR) instrument in order to monitor the near-surface soil moisture and freeze-thaw states globally, with a revisit frequency of 23 days. SMAP provides three soil moisture products: a high-resolution from the radar, a low-resolution from the radiometer, and an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015