Improved Multifractal Fusion Method to Blend SMOS Sea Surface Salinity Based on Semiparametric Weight Function
نویسندگان
چکیده
منابع مشابه
SMOS: Measuring Sea Surface Salinity from Space
In May 1999, the European Space Agency (ESA) selected SMOS as an Earth Explorer Opportunity mission. One of its goals is the generation of global Sea Surface Salinity (SSS) maps. The sensor embarked is an L-band interferometric radiometer with full-polarimetric capability called MIRAS. The retrieval of SSS from microwave measurements is based on the fact that the brightness temperature (TB) of ...
متن کاملSea Surface Salinity Retrieval within the ESA Soil Moisture and Ocean Salinity (SMOS) Mission
The SMOS (Soil Moisture and Ocean Salinity) mission will provide from 2007 onwards global maps of soil moisture over land and sea surface salinity over ocean. The radiometry group of the Technical University of Catalonia (UPC) in Barcelona has been involved either in the definition of the SMOS single payload, MIRAS (Microwave Imaging Radiometer by Aperture Synthesis), or in the organization of ...
متن کاملAssessment of the Local Oscillator calibration frequency impact on the SMOS Sea Surface Salinity
The MIRAS instrument has a unique reference clock that is distributed to the Control and Monitoring units (CMN) located in the SMOS arms and in the hub. Each CMN uses the clock signal, provided by the Local Oscillator, to generate a reference tone and provide it to a group of six receivers. Although every CMN should generate exactly the same tone, the phase of the tones drifts due to the temper...
متن کاملSMOS: A Satellite Mission to Measure Ocean Surface Salinity
The ESA’s SMOS (Soil Moisture and Ocean Salinity) Earth Explorer Opportunity Mission will be launched by 2005. Its baseline payload is a microwave L-band (21 cm, 1.4 GHz) 2D interferometric radiometer, Y shaped, with three arms 4.5 m long. This frequency allows the measurement of brightness temperature (Tb) under the best conditions to retrieve soil moisture and sea surface salinity (SSS). Unli...
متن کاملThe Impact of Dielectric Constant Model and Surface Reference on Differences between Smos and Aquarius Sea Surface Salinity
Two ongoing space missions share the scientific objective of mapping the global Sea Surface Salinity (SSS), yet their observations show significant discrepancies. ESA's Soil Moisture and Ocean Salinity (SMOS) and NASA's Aquarius use L-band (1.4 GHz) radiometers to measure emission from the sea surface and retrieve SSS. Significant differences in SSS retrieved by both sensors are observed, with ...
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ژورنال
عنوان ژورنال: Journal of Atmospheric and Oceanic Technology
سال: 2019
ISSN: 0739-0572,1520-0426
DOI: 10.1175/jtech-d-18-0155.1