^M
^M ^M ^M ^M ^MUpdate #2: The GOES-17 Band 2 correction will be applied on April 29, 2019 between 1400 and 1600 UTC. ^M
^M
Update #1: M-BThe GOES-16 Band 2 correction was implemented as expected on April 23, 2019 and was verified by the GOES-R Calibration Working Group (CWG).M-B However, the GOES-17 Band 2 correction was not implemented as expected. The radiance level for Band 2 stayed consistent with previous calibrations.M-B An update to this notification will be sent when the GOES-17 correction is applied.
^MTopic: GOES-16 and GOES-17 ABI Band 2 radiance correction
^MDate/Time Issued: April 16, 2019 1605 UTC
^MProduct(s) or Data Impacted: GOES-16 and GOES-17 ABI product change
^MDate/Time of Initial Impact: April 23, 2019 1110 UTC
^MDate/Time of Expected End: April 23, 2019 1515 UTC
^MLength of Outage: None
^MDetails/Specifics of Change:
^MA correction to the ABI Band 2 (0.64 micron) L1b radiance for both GOES-East (GOES-16) and GOES-West (GOES-17) will be applied on April 23, 2019 via their respective solar calibration activities. The correction will reduce the GOES-West Band 2 L1b radiance values by 6.20% and reduce the GOES-East Band 2 L1b radiance values by 6.92%. There will be no impact to data distribution. Users can expect to see Band 2 imagery appear slightly darker once the correction is applied.
^MThe radiometric bias correction was derived through comparison of the ABI L1b data to other satellite data, ground target observations, and (for GOES-16 only) airborne field campaign data.
^MThis change will be implemented regardless of CWD.
^MDetails on the measurement of the radiometric bias are given in the GOES-16 ABI L1b/CMI Product Performance Guide and the GOES-17 ABI L1b/CMI Provisional Validation PS-PVR documents. These documents can be found at: https://www.ncdc.noaa.gov/data-access/satellite-data/goes-r-series-satellites
^MMore information on the determination of the bias, etc. by contacting
^MFred Wu (xiangqian.wu@noaa.gov).
^MM-B
^MContact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880
^MWeb Site(s) for applicable information:
^MSee https://www.ospo.noaa.gov/Operations/messages.html for this and other satellite related messages.
^M