CEOS EO HANDBOOK – MISSION SUMMARY
- PolSIR
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Full Name
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Polarized Submillimeter Ice-cloud Radiometer
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Status
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Approved
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Mission Agencies
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NASA
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Launch Date
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Jan 2027
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Mission Links
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EOL Date
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Jan 2029
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EO Portal Info
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NORAD Catalog #
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International Designator
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Orbit Type
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Inclined, non-sun-synchronous
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Orbit Period
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94 minutes
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Orbit Sense
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Ascending
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Orbit Inclination
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52 deg
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Orbit Altitude
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475 km
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Orbit Longitude
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Orbit LST
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1899-12-30T03:30:00.000Z
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Repeat Cycle
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Objectives and Applications
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The goal of the PolSIR mission is to better characterize and understand the diurnal variability of tropical and sub-tropical ice clouds. PolSIR will provide key observational constraints on ice properties in climate models and enable modelers to develop more accurate cloud parameterizations.
The science and application objectives are to: (1) Constrain the seasonally influenced diurnal cycle amplitude, form, and timing of the ice water path (IWP) and particle diameter in tropical and sub-tropical ice clouds. (2) Determine the diurnal variability of ice clouds in the convective outflow areas and understand relation to deep convection. (3) Determine the relationship between shortwave and longwave radiative fluxes and the diurnal variability of ice clouds. (4) Enable improvement of climate models by providing novel observations of the diurnal cycle of ice clouds, ultimately leading to improved climate modeling skills and increased fidelity of climate forecasts in support of critical decision-making.
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Mission Measurements
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Mission Instruments
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OpenSearch Datasets
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No IDN OpenSearch datasets found.
No FedEO OpenSearch datasets found.
Want to explore more? Read about FedEO  by ESA or click here to search FedEO or CMR OpenSearch by NASA
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