Talk:GEOS-5 ADAS Radiance Monitoring

Please add notes to this section, including anything noteworthy to radiance monitoring, using the + sign above. Examples below show the header (i.e. NPP Launched) and the comment below. It is helpful if you include the date in your comment, following the format:

*'''DD Month Year''' - Now my comments

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Observing System Notes

• 01 November 2011 - This page was generated

NPP Launched

• 28 October 2011 - NPP was successfully launched.

Test Comment

• 1 November 2011 - This is a test message.

Aqua AMSU-A change starting 18z Sep 21 2011

• 3 November 2011 - There was a change in the bias correction and number of radiances accepted for Aqua AMSU-A toward the end of September 2011. A closer check showed the bias correction adjusted starting at 18z Sep 21 2011. The mean (O-F) and (O-A) increased to -0.2K and normalized cost also increased. In the ana.log files after that point, it shows we are reading AMSU-A data from both the 'airsbufr' and 'eosamsuabufr' files while prior to that date there was no AMSU-A data read in from the 'airsbufr' file. We found that AMSU-A data is now written in the 'airsbufr' file; this change in input is likely related to the change in statistics. Operations staff have been alerted and they are currently investigating.
• 3 November 2011 - Update - our upstream provider had applied an update to their processing package back in September which added the AMSU-A data to the AIRS data file. OPS configuration is being modified not to try to read AMSU-A from the AIRS data file, and we have also asked our data provider to revert to our prior configuration.
• 7 November 2011 - It looks like the statistics (bias correction and o-f mean) have moved back toward their previous values.

N15 outage 11/29/11

• 29 November 2011 - Noted a dropout of N15 data on 11/29/11 - pertinent message here:

NOAA-15 Gyroless Baseline On-Orbit Test

Aqua AIRS and AMSU-A data dropoff 28 Nov - 1 Dec

• 2 December 2011 - There were problems with data starting on 28 Nov due to a problem with communications from the Norway ground station.

Subject: Re: AIRS NRT data gaps starting from 11/29/2011........
From: "Budala, Sandeep S. (GSFC-610.2)[Affiliate]" <sandeep.s.budala@nasa.gov>
Date: Tue, 29 Nov 2011 16:07:37 -0600

Hello All,

Be advised the communication lines between GSFC and Norway were severed yesterday at @ 332/11:43:17GMT due to a undersea cable anomaly. The Aqua spacecraft are currently utilizing on-board automation to continue to playback the science data at Norway and utilizing other ground stations to capture the X-Band (science) data. Due to the data not able to be transmitted from Svalbard, Norway there will be an impact to science data latency to end users. The missions are at a higher than normal risk for incurring a data loss due to this anomaly.

Thanks!

Sandeep

GOES-15 replaces GOES-11 as operational satellite

• 7 Dec 2011 - GOES-15 has replaced GOES-11 as the operational GOES-W satellite. Relevant links:
  • announcement on NESDIS SSD page
  • NASA feature story

NOAA-17 HIRS3

• 12 Dec 2011 - Per Ron Gelaro's email - NCEP staff noted an increase in noise from NOAA-17 HIRS. The change is noticable on the monitoring change as a sudden change in mean and std. deviation of O-F, and a dropoff in the number of accepted obs, starting with the 00UTC analysis on 4 December. We are following NCEPs lead in turning off N17 HIRS, effective as of 12UTC Dec 12 (today). The active_channels.tbl in the GEOS tag is being modifed to reflect turning off data from this satellite effective 00UTC Dec 4. The NCEP GSI and NAM turn off N17 HIRS as of 18UTC on Dec 13.