[GLIMS] ASTER end of mission & new radiometric calibration

[Jeffrey Kargel]

Dear GLIMS colleagues:
FYI, better/new ASTER L1A radiance calibrations are underway for the whole archive of ASTER scenes (email appended below). The sad news is the phrase "end of mission." You can read more about end of mission (now slated for Sep. 2023) here: https://asterweb.jpl.nasa.gov.
Terra/ASTER has already begun its slow drift out of its two-decade-long orbit, but so far effects are quite minor.
Cheers,
Jeff Kargel
[https://asterweb.jpl.nasa.gov/images/asani2.gif]<https://asterweb.jpl.nasa.gov/>
ASTER: Advanced Spaceborne Thermal Emission and Reflection Radiometer<https://asterweb.jpl.nasa.gov/>
ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) is a high resolution imaging instrument that is flying on the Terra satellite. ASTER will obtain detailed maps of land surface temperature, emissivity, reflectance and elevation of the Earth.
asterweb.jpl.nasa.gov




________________________________
From: Abrams, Michael J (US 329A) <mjabrams at jpl.nasa.gov>
Sent: Wednesday, June 2, 2021 4:56 PM
To: arg3 at u.washington.edu <arg3 at u.washington.edu>; Davies, Ashley G (US 3223) <ashley.g.davies at jpl.nasa.gov>; Eng, Bjorn T (US 398A) <bjorn.t.eng at jpl.nasa.gov>; braup at nsidc.org <braup at nsidc.org>; Geller, Gary N (US 398P) <gary.n.geller at jpl.nasa.gov>; Hulley, Glynn C (US 329G) <glynn.hulley at jpl.nasa.gov>; Tan, Howard L (US 329A) <howard.l.tan at jpl.nasa.gov>; jeffrey.g.masek at nasa.gov <jeffrey.g.masek at nasa.gov>; jmars at usgs.gov <jmars at usgs.gov>; kargel at hwr.arizona.edu <kargel at hwr.arizona.edu>; Maldonado, Leon (US 329A) <leon.maldonado.jr at jpl.nasa.gov>; lprashad at asu.edu <lprashad at asu.edu>; matt.watson at bristol.ac.uk <matt.watson at bristol.ac.uk>; MickieGrace at LookoutRanch.com <MickieGrace at LookoutRanch.com>; Abrams, Michael J (US 329A) <mjabrams at jpl.nasa.gov>; mp337 at cornell.edu <mp337 at cornell.edu>; mramsey at pitt.edu <mramsey at pitt.edu>; rwessels at usgs.gov <rwessels at usgs.gov>; Hook, Simon J (US 3200) <simon.j.hook at jpl.nasa.gov>; Realmuto, Vincent J (US 329A) <vincent.j.realmuto at jpl.nasa.gov>; Carsten.Laukamp at csiro.au <Carsten.Laukamp at csiro.au>; ian.p.crum at nasa.gov <ian.p.crum at nasa.gov>; drew.h.kittel at nasa.gov <drew.h.kittel at nasa.gov>; kurtis.thome at nasa.gov <kurtis.thome at nasa.gov>; Jason.T.Hendrickson at nasa.gov <Jason.T.Hendrickson at nasa.gov>; dimitrios.c.mantziaras at nasa.gov <dimitrios.c.mantziaras at nasa.gov>; kd.sd.us at gmail.com <kd.sd.us at gmail.com>; ctorbert at usgs.gov <ctorbert at usgs.gov>; tmaiersperger at usgs.gov <tmaiersperger at usgs.gov>; wright at higp.hawaii.edu <wright at higp.hawaii.edu>
Cc: 'yasushi at nagoya-u.jp' <yasushi at nagoya-u.jp>; iwao.koki at aist.go.jp <iwao.koki at aist.go.jp>
Subject: [EXT]new radiometric calibration activities


External Email

The radiometric calibration working group has developed new calibration coefficients integrating on-board lamps, in situ cal/val. and the Lunar calibration. The LPDAAC, JPL team, Japan GDS and Science Team have agreed on an implementation schedule. This month GDS will start re-processing the entire ASTER archive (~ 4 million scenes) and produce new L1A scenes. Later, they will send all of the new L1As to the LPDAAC for end-of-mission archiving. Going forward, GDS will send newly acquired scenes to the DAAC, processed to L1A with new coefficients. On the LPDAAC side, GDS sent the DAAC new L1A software, and the DAAC and GDS verified that both sides could produce identical new L1As. At the DAAC, all user requests for ASTER products (L1B, L1T, higher level products) will be produced on-demand from DAAC- and GDS-created L1As with new calibration coefficients.





Michael Abrams

ASTER Team Leader

NASA/Jet Propulsion Laboratory

4800 Oak Grove Dr.

Pasadena CA 91109

818-354-0937

626-375-5922 (mobile)

mjabrams at jpl.nasa.gov


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