Subject: Administrative: Suomi-NPP Drag Make-Up (DMU) Maneuver This is a multi-part message in MIME format. --Boundary_(ID_yBOo/HFWcRAPnGOtB4hkuA) Content-type: text/plain; charset=utf-8; format=flowed Content-transfer-encoding: 8BIT *Topic: * S-NPP Drag Make-UP (DMU) Maneuver scheduled for July 19, 2017 *Date/Time Issued:* July 17, 2017 1955Z *Product(s) or Data Impacted*: All S-NPP Sensor Data *Date/Time of Initial Impact:* July 19, 2017 15:54Z *Date/Time of Expected End:* July 19, 2017 16:31Z *Length of Outage:* See Details. *Details/Specifics of Change:* On July 19, 2017 at 16:20Z, S-NPP will perform a 0.8 second propulsive Drag Make-UP (DMU) maneuver to maintain Repeating Ground Track. Due to the DMU activities, some of the ATMS Scan Reversals will not occur. During the period of DMU preparation and activities, ATMS Scan Reversals will be manually commanded to minimize skipped reversals, but may not occur exactly at stepped latitudes and thus small data gaps may be introduced. The following observatory systems will be affected on July 19, 2017: 12:00Z – 22:00Z ATMS Scan Reversal will be manually commanded, some reversals will be missed. 15:54:00Z – 18:01:04Z CERES in Contam-Safe mode, science data will not be available 16:04:00Z – 16:31:06Z OMPS in Decon mode, Science data will not be available 16:09:00Z - 16:32:04Z HRD will be off, data for direct broadcast users will be unavailable 16:14:00Z – 16:27:04Z S-NPP off nadir pointing, collected data during that time period may be impacted and not disseminated *Contact Information for Further Information*: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880 *Web Site(s) for applicable information*: N/A This message was sent to 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 --Boundary_(ID_yBOo/HFWcRAPnGOtB4hkuA) Content-type: text/html; charset=utf-8 Content-transfer-encoding: 8BIT

Topic: S-NPP Drag Make-UP (DMU) Maneuver scheduled for July 19, 2017

Date/Time Issued: July 17, 2017 1955Z

Product(s) or Data Impacted: All S-NPP Sensor Data

Date/Time of Initial Impact: July 19, 2017 15:54Z

Date/Time of Expected End: July 19, 2017 16:31Z

Length of Outage: See Details.

Details/Specifics of Change: On July 19, 2017 at 16:20Z, S-NPP will perform a 0.8 second propulsive Drag Make-UP (DMU) maneuver to maintain Repeating Ground Track. Due to the DMU activities, some of the ATMS Scan Reversals will not occur. During the period of DMU preparation and activities, ATMS Scan Reversals will be manually commanded to minimize skipped reversals, but may not occur exactly at stepped latitudes and thus small data gaps may be introduced.

The following observatory systems will be affected on July 19, 2017:

12:00Z – 22:00Z ATMS Scan Reversal will be manually commanded, some reversals will be missed.

15:54:00Z – 18:01:04Z CERES in Contam-Safe mode, science data will not be available

16:04:00Z – 16:31:06Z OMPS in Decon mode, Science data will not be available

16:09:00Z - 16:32:04Z HRD will be off, data for direct broadcast users will be unavailable

16:14:00Z – 16:27:04Z S-NPP off nadir pointing, collected data during that time period may be impacted and not disseminated

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

Web Site(s) for applicable information: N/A

This message was sent to 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

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