Subject: Administrative: GOES-15 Visible Calibration Update for the This is a multi-part message in MIME format. --Boundary_(ID_V1pZWBKWUj28RSEM9lyDJw) Content-type: text/plain; charset=utf-8; format=flowed Content-transfer-encoding: 7BIT *Topic: *GOES-15 Visible Calibration Update for the Month of May 2018 *Date/Time Issued: *May 9, 2018 2105Z *Product(s) or Data Impacted: *All products from visible channel *Date/Time of Initial Impact: *May 9, 2018 09:30Z *Date/Time of Expected End:* Until Next Month's Coefficient Update *Length of Outage: *N/A *Details and Specifics of Change: * On 9 May 2018, the following update of the calibration coefficients, based on post-launch vicarious calibration at NOAA/NESDIS/STAR, was implemented for the Imager visible channel of GOES-15 at 0930Z. These coefficients are intended to be optimal on 22 May, two weeks after the implementation date. This notification no longer includes updates to the Imager visible channel calibration coefficients for GOES-13, since GOES-13 is no longer GOES-EAST. *GOES-15:* The following update of the calibration coefficients, based on post-launch vicarious calibration at NOAA/NESDIS/STAR, is recommended for the currently operational GOES-15 Imager visible channel. These coefficients are expected to be implemented on the second Tuesday of the Update Month listed below and optimal on the fourth Tuesday of the Update Month (in the middle of the two scheduled updates).[This month, May 2018, the update was implemented in the GVAR one day late.] Satellite: GOES-15 Update Month: May Update Year: 2018 Current post-launch calibration coefficient: 1.54007 Date: 2018114000000000 Previous post-launch calibration coefficient: 1.53565 Date: 2018086000000000 Initial calibration coefficient: 1.0 Initial calibration date: 2001114000000000 *Some definitions:* The date format is: YYYYDDDHHMMSSmmm, where YYYY = year, DDD = day of the year, HH = hour, MM = minute, SS = seconds, mmm = msec. The coefficient provided is a gain that is to be applied to the Visible channel counts-to-radiance conversion Op_R = Coefficient * Pre_R where Pre_R is pre-launch gain for the channel and Op_R is the new gain -- the gain after the coefficient listed as "Current post-launch calibration coefficient" is applied. The initial coefficient has been normalized to 1.0 for the purposes of this post-launch calibration. *Contact Person(s) Name/Email/Phone Number for Questions: *Paul Douglas, jpaul.douglas@noaa.gov , desk phone 301-817-4031 operations support Xiangqian Wu Xiangqian.Wu@noaa.gov __>_301-763-8136 x 138 instrument scientist *Web site(s) that contain other relevant information (where applicable):* http://www.star.nesdis.noaa.gov/smcd/spb/fwu/homepage/GOES_Imager_Vis_OpCal.php *Contact Information for Further Information:* ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880 This message was sent from ESPC.Notification@noaa.gov . You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880 . Please note: it make take up to two business days to process your unsubscribe request. --Boundary_(ID_V1pZWBKWUj28RSEM9lyDJw) Content-type: text/html; charset=utf-8 Content-transfer-encoding: 8BIT

Topic:  GOES-15 Visible Calibration Update for the Month of May 2018

Date/Time Issued: May 9, 2018 2105Z

Product(s) or Data Impacted:   All products from visible channel

Date/Time of Initial Impact:   May 9, 2018 09:30Z

Date/Time of Expected End:  Until Next Month's Coefficient Update

Length of Outage:  N/A

Details and Specifics of Change: 

On 9 May 2018, the following update of the calibration coefficients, based on post-launch vicarious calibration at NOAA/NESDIS/STAR, was implemented for the Imager visible channel of GOES-15 at 0930Z. These coefficients are intended to be optimal on 22 May, two weeks after the implementation date.

 This notification no longer includes updates to the Imager visible channel calibration coefficients for GOES-13, since GOES-13 is no longer GOES-EAST.

 GOES-15:

 The following update of the calibration coefficients, based on post-launch vicarious calibration at NOAA/NESDIS/STAR, is recommended for the currently operational GOES-15 Imager visible channel. These coefficients are expected to be implemented on the second Tuesday of the Update Month listed below and optimal on the fourth Tuesday of the Update Month (in the middle of the two scheduled updates).  [This month, May 2018, the update was implemented in the GVAR one day late.]

 Satellite: GOES-15
Update Month: May
Update Year: 2018
Current post-launch calibration coefficient: 1.54007
Date: 2018114000000000
Previous post-launch calibration coefficient: 1.53565
Date: 2018086000000000
Initial calibration coefficient: 1.0
Initial calibration date: 2001114000000000

 

Some definitions:

The date format is: YYYYDDDHHMMSSmmm, where YYYY = year, DDD = day of the year, HH = hour, MM = minute, SS = seconds,

mmm = msec.

The coefficient provided is a gain that is to be applied to the Visible channel counts-to-radiance conversion

Op_R = Coefficient * Pre_R

where Pre_R is pre-launch gain for the channel and Op_R is the new gain -- the gain after the coefficient listed as

"Current post-launch calibration coefficient" is applied.

The initial coefficient has been normalized to 1.0 for the purposes of this post-launch calibration.

Contact Person(s) Name/Email/Phone Number for Questions:
Paul Douglas, jpaul.douglas@noaa.gov, desk phone 301-817-4031operations support
Xiangqian Wu
Xiangqian.Wu@noaa.gov <mailto:Xiangqian.Wu@noaa.gov> 301-763-8136 x 138 instrument scientist

Web site(s) that contain other relevant information (where applicable):

http://www.star.nesdis.noaa.gov/smcd/spb/fwu/homepage/GOES_Imager_Vis_OpCal.php

Contact Information for Further Information:  ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880

This message was sent from ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it make take up to two business days to process your unsubscribe request.

 


--Boundary_(ID_V1pZWBKWUj28RSEM9lyDJw)--