Climate-Quality Calibration for Low Earth-Orbit Microwave Radiometry

Improvements in radiometric calibration are needed to achieve the desired accuracy and stability of satellite-based microwave-radiometer observations intended for the production of climate data records. Linearity, stability and traceability of measurements to an SI-unit standard should be emphasized...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2020-01, Vol.12 (2), p.241
Main Authors: Rosenkranz, Philip, Blackwell, William, Leslie, R.
Format: Article
Language:English
Subjects:
Accuracy
Antennas
Atmosphere
Calibration
Climate
Climate studies
Climatic data
Climatology
Design
Diurnal variations
gsics
intercalibration
microwave radiometer calibration
Microwave radiometers
Noise
Radiometers
Radiometry
Receivers & amplifiers
Satellite instruments
Satellite observation
Satellite-borne instruments
Satellites
Stability
Stratosphere
Temperature
Trends
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Description
Summary:Improvements in radiometric calibration are needed to achieve the desired accuracy and stability of satellite-based microwave-radiometer observations intended for the production of climate data records. Linearity, stability and traceability of measurements to an SI-unit standard should be emphasized. We suggest radiometer design approaches to achieve these objectives in a microwave calibration-reference instrument. Multi-year stability would be verified by comparison to radio-occultation measurements. Data from such an instrument could be used for climate studies and also to transfer its calibration to weather-satellite instruments. With the suitable selection of an orbit, a climatology of the diurnal variation in the measured parameters could be compiled, which would reduce uncertainties in climate trends inferred from earlier microwave radiometers over past decades.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs12020241