GLOBTEMPERATURE

an ESA DUE initiative

 

International LST and Emissivity Group

The International Land Surface Temperature and Emissivity Working Group (ILSTE-WG) aims to provide advice and recommendations to the wider scientific and user communities on the best practices for retrieval, validation and exploitation of Land Surface Temperature (LST), Ice Surface Temperature (IST), Lake Surface Water Temperature (LSWT), and Land Surface Emissivity (LSE).

More information: http://ilste-wg.org/

Period of report: February 2016

The main activities in this reporting period can be summarised as follows:

  • Dates for UCM#4 in Lisbon have been finalised (7th– 8th June) – this will be combined with other community events:
    • A pre-workshop of the Elevation Dependent Warming (EDW) community (6th June)
    • A dedicated session of the SAF community during UCM#4 (8th June)
    • An internal progress meeting and a General ILSTE Meeting (8th June)
  • Implementation of new functions into the operational portal
  • First analysis of validation data from Lake Tahoe
  • Preparation of the production of 3 years of AMSR-E LST
  • Processing of Merged Product:
    • Merged LEO at local solar time
    • Merged GEO at UTC
    • Merged LEO at UTC
  • Processing of CDR

Period of report: January 2016

The main activities in this reporting period can be summarised as follows:

  • Deliverables all in progress, in review or awaiting approval
  • ILSTE-WG Steering Committee Telecon to discuss the Requirements of LST for Climate ready for the next GCOS Implementation Plan held on 3rd February 2016
  • Obtained 6 months (Jul-Dec 2010) of Lake Tahoe in-situ data for JPL's four buoys (Bulk Temperature & Radiative Skin Temperature)
  • Production of 3 years of merged GEO LST with updated variables (primary files), all GEOs bias-corrected to SEVIRI;
  • Improvement to CDR product include:
    • Development of an aerosol mask
    • Consistent approach (3-component model) to uncertainty estimation with SST and IST and other single-sensor LST datasets being integrated into CDR
    • Assessment of the uncertainty in the temporal correction between ATSR sensors using SEVIRI data

Period of report: December 2015

The main activities in this reporting period can be summarised as follows:

  • Provisional dates for UCM#4 in Lisbon have been agreed (28th – 29th June) – this will be combined with an internal progress meeting
  • Full year-by-year processing of GlobTemperature “value-added” MODIS product with full uncertainty breakdown completed both for Aqua and Terra
  • User Case Studies - all on target in terms of timing
  • Merged product:
    • Co-location files of MTSAT and GOES with MODIS/Terra and MODIS/Aqua are ready for the production of the merged product;
    • Revisiting bias correction methodologies and fine-tuning the computation toward the most robust results possible;
  • CDR:
    • Retrieval uncertainties added to the processing chain
  • Numerous end-Phase deliverables being completed and reviewed

Period of report: November 2015

The main activities in this reporting period can be summarised as follows:

  • Progress Meeting #4 held on 27-Nov-2015 at ACRI-ST, Toulouse
  • End-Phase 2 deliverables all in progress / review
  • Reconfirmation from GCOS Steering Committee that we can go forward with LST requirement definitions for LST. GCOS will have another meeting in spring for preparing the next Implementation Plan where LST will be in as a new ECV.
  • Year-by-year processing of GlobTemperature “value-added” MODIS product with full uncertainty breakdown completed for Aqua and near-completed for Terra
  • User Case Studies - all on target in terms of schedule
  • CCRR - test dataset about to be uploaded online. Blind submission dataset will be available in early January; CCRR participation opportunity extended until April
  • Production of MTSAT and GOES single-sensor LST datasets for period ready for release onto Data
    Portal

Period of report: October 2015

The main activities in this reporting period can be summarised as follows:

  • Most of demands raised during the UCM#3 implemented in the test server – migration to the operational portal delayed and now planned by mid-November
  • Development of algorithms for GlobTemperature “value-added” MODIS product with uncertainty breakdown consistent with the ATSR approach now complete
    • Processing in progress with subsequent upload to Data Portal
  • Ongoing refinements being made to the SSMI/ I AMSR-E algorithms, with the objective of improving the retrieval performances
  • Final report for UCS#2 on evapo-transpiration has been circulated
  • Start of MTSAT single-sensor database production and debugging
  • Visit of DG to IPMA: review of validation and inter-comparison results, uncertainty budget computation, revision of methodologies