ceos-org / ceos-ard

Repository for CEOS Analysis Ready Data (CEOS-ARD), including Product Family Specifications (PFSs)
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LSI-VC-15-24: Consider adding a long-term stability parameter to future iterations of the Surface Temperature/Combined Optical PFS. #44

Open mattsymbios opened 4 months ago

mattsymbios commented 4 months ago

PFS Version(s)

5.0

Requirement number(s)

No response

Description

To build a Climate Data Record (CDR) for LST, data records from multiple sensors need to be consistently processed and harmonised. Consistency in processing includes retrieval algorithms, auxiliary data, cloud masking and uncertainty models.

LSI-VC-15-24: LSI-VC to consider adding a long-term stability parameter to future iterations of the Surface Temperature/Combined Optical PFS.

Steve Covington (USGS) noted that USGS considers stability over the orbit (minute scale) rather than decades. USGS is not currently measuring stability in the way GCOS is thinking. USGS does not include a long-term stability metric for their products.

mattsymbios commented 2 weeks ago

From the draft WGClimate Coordinated Action Plan:

Recommendation #19: The CEOS Land Surface Imaging-Virtual Constellation (LSI-VC) to coordinate on the formulation of future high-resolution missions and seamless continuity of sustained Land Surface Temperature CDRs. Action #2018-22: LSI-VC to formulate future high-resolution missions for Land Surface Temperature climate data records aiming at seamless continuity of CDRs. Status: Open After discussion at LSI-VC #15 in 2024 WGClimate decided to keep the action open. LSI-VC proposed to update the surface temperature PFS with a new stability metric to bring it in line with GCOS requirements metrics. For USGS and ESA missions LSI-VC members will coordinate on this formulation.