The GOES-13 Science Test was conducted 7 through 28 December 2006. Data continued to be transmitted and collected until GOES-13 was put into storage mode on 5 January 2007.

Tech Report cover The results of the GOES-13 Science Test, provided by numerous contributors over the succeeding months, have been compiled by Don Hillger and Tim Schmit. The report has been approved for release and is available as NOAA Technical Report NESDIS 125 (last revised 2008-01-16). The report is available on CD as well, to anyone who requests one. (Send e-mail requests to the address at the bottom of this page.)

A similar Science Test will be conducted for GOES-O sometime in 2009. See the GOES-O Science Test page for information on that event.

GOES-13 Science Test Schedules
and Daily Implementation
GOES-13 Web sites
(other than this one)
GOES-13 Images and Analysis


GOES-13 Science Test Schedules

Below are the schedules that were available during the Science Test. One of these schedules was called daily, with the exception of the moon-view (C7MOON) and over-sampling (C8) schedules, which interrupted other schedules currently in progress. The schedule changed daily at 1630 UTC (after notification by 1530 UTC) and ran for 24 hours, except on weekends when the schedules for the remainder of the weekend (after the end of the Friday schedule) were pre-determined for 2 days from Saturday afternoon through Monday morning).

Test Schedule NameImagerSounderPurpose
C5RTNEmulation of GOES-East routine operationsEmulation of GOES-East routine operationsRadiance and product comparisons
C4RTNEmulation of GOES-West routine operationsEmulation of GOES-West routine operationsRadiance and product comparisons
C1CONContinuous 5-minute (CONUS sector)26-minute sector every 30 minutes (CONUS sector)Test navigation, ABI-like (temporal) CONUS scans
C2SRSOContinuous 1-minute (with center point specified for storm analysis)26-minute sector every 30 minutes (with center point same as Imager)Test navigation, ABI-like (temporal) mesoscale scans
C3SRSOContinuous 30-second (with center point over either Huntsville AL or Washington DC area)26-minute sector every 30 minutes (with center same as Imager)To coordinate with lightning detection arrays in Huntsville AL and Washington DC areas
C6FDContinuous 30-minute Full Disk (including off-earth measurements)Alternating east and west limb/space views every hourNoise, striping, fires, etc.
C7MOONCapture moon off edge of earth (only once: Julian Day 345/346 between 2350 and 0010 UTC)Emulation of GOES-East routine operationsTest ABI lunar calibration concepts
C8Emulation of 2-km ABI through spatial over-sampling (continuous 26 minutes for same sector per specific line-shifted scan strategy)Emulation of GOES-East routine operationsABI higher-resolution product development


Daily Implementation of GOES-13 Science Test Schedules
(Daily starting time: 1630 UTC)

Starting Date [Julian Day]
(Day of Week)
Test Schedule NameImagerSounderNotes
December 7 [341]
(Thursday)
C1CON5-minute CONUS30-minute CONUSGreat Lakes lake-effect snow
December 8 [342]
(Friday)
C5RTNGOES-East routine emulationGOES-East routine emulation
December 9 [343]
(Saturday)
C6FD30-minute Full DiskAlternating east and west limb/space viewsNoise, striping, etc.
December 10 [344]
(Sunday)
C6FD30-minute Full DiskAlternating east and west limb/space viewsNoise, striping, etc.
December 11 [345]
(Monday)
C5RTNGOES-East routine emulationGOES-East routine emulation
[345] 2350 UTC to [346] 0010 UTC (inserted into schedule above)C7MOONCapture moon off edge of earthGOES-East routine emulationTest ABI lunar calibration concepts
December 12 [346]
(Tuesday)
C3SRSO30-second Rapid Scan centered at 34.6N, 86.75W30-minute CONUSHazardous Weather Testbed, Huntsville AL
December 13 [347]
(Wednesday)
C2SRSO1-minute Rapid Scan centered at 34S, 66W30-minute CONUSSevere weather over Argentina
December 14 [348]
(Thursday)
C4RTNGOES-West routine emulationGOES-West routine emulation
December 15 [349]
(Friday)
C4RTNGOES-West routine emulationGOES-West routine emulation
December 16 [350]
(Saturday)
C4RTNGOES-West routine emulationGOES-West routine emulation
December 17 [351]
(Sunday)
C5RTNGOES-East routine emulationGOES-East routine emulation
December 18 [352]
(Monday)
C4RTNGOES-West routine emulationGOES-West routine emulation
December 19 [353]
(Tuesday)
C2SRSO1-minute Rapid Scan centered at 36N, 108W30-minute CONUSIntense low over SW U.S.
December 20 [354]
(Wednesday)
C2SRSO1-minute Rapid Scan centered at 38N, 103W30-minute CONUSIntense low over U.S. high plains
December 21 [355]
(Thursday)
C2SRSO1-minute Rapid Scan centered at 34.6N, 86.75W30-minute CONUSHazardous Weather Testbed, Huntsville AL
December 22 [356]
(Friday)
C3SRSO30-second Rapid Scan centered at 39N, 77W30-minute CONUSWashington DC
December 23 [357]
(Saturday)
C1CON5-minute CONUS30-minute CONUS
December 24 [358]
(Sunday)
C5RTNGOES-East routine emulationGOES-East routine emulation
December 25 [359]
(Monday)
C1CON5-minute CONUS30-minute CONUSFlorida/Carolina severe weather
December 26 [360]
(Tuesday)
C2SRSO1-minute Rapid Scan centered at 42N, 122W30-minute CONUSPacific Northwest strong frontal system
December 27 [361]
(Wednesday)
C1CON5-minute CONUS30-minute CONUS
December 28 [362] (Thursday)C5RTNGOES-East routine emulationGOES-East routine emulation
[362] 1745, 2345, 0545, and 1145 UTC (inserted into schedule above)C8Emulation of 2-km ABI through spatial over-sampling for 26 minutesGOES-East routine emulationABI higher-resolution product development
End of pre-planned Science Test: Following schedule continued until GOES-13 was put into storage mode, on 5 January
December 29 [363] (Friday) thru January 5 [005] (Friday)C5RTNGOES-East routine emulationGOES-East routine emulation


GOES-13 Web sites (other than this one)

GOES-13 RAMSDIS Online page, see http://rammb.cira.colostate.edu/ramsdis/online/goes-13.asp

CIMSS Satellite Blog: Archive for the 'GOES-13' Category, see http://cimss.ssec.wisc.edu/goes/blog/category/goes-13/

CIMSS GOES Realtime Derived Products (includes GOES-13 products), see http://cimss.ssec.wisc.edu/goes/rt/


GOES-13 Images and Analysis

The following sections are in reverse chronological order, with the newest information at the top.

For general GOES-13 information/documentation see the bottom of this page.


30 August 2007: Below is a link to three examples showing the better Image Navigation and Registration (INR) for GOES-13 over GOES-12.


22 June 2007: Below is a link to the final memo regarding the bias in GOES-13 Imager band-6 (13.3 m).


27 April 2007: Below are preliminary Sounder Derived Product Images (DPIs) of Lifted Index (LI) and Total Precipitable Water (TPW) from GOES-13 compared to GOES-12 (both in the GOES-12 projection) for 1746 UTC on 13 December 2006 (J. Nelson, CIMSS).



17 April 2007: Below is an analysis of Sea-Surface Temperature Images for GOES-13.


26 February 2007: Below is a four-panel comparison of east-limb vs. west-limb detector-to-detector striping for separate space-only and earth-only measurements for the GOES-13 Sounder. Note that striping is much larger for earth-only measurements (right side) compared to space-only measurements (left side). For earth-only measurements, striping is much larger (on the order of a factor of 2) for the west-limb (bottom right) vs. the east-limb (top right). For space-only measurements, striping is not that much different between the two limbs. See the PowerPoint presentation for additional details.


02 February 2007: Below is an analysis of detector-to-detector striping for the GOES-13 Sounder. Both images show striping for all 18 IR bands for 24 hours of data collected on Julian Days 343-344. The first image is the analysis for data collected from the east-limb of the earth (times ending in xx46 UTC) and the second image is the same analysis for data collected from the west-limb of the earth (times ending in xx16 UTC). Both data sets include both earth and space views. Note the much-increased striping for all bands on the west-limb vs. the east-limb. Striping in all bands is elevated by a ratio of 1.24 (for band 15) to 2.55 (for band-11). An explanation for the difference in striping between the data from the two limbs is being investigated. These results are unlike those previously-reported for noise analysis, in which the results from both limbs of the earth were nearly identical.



29 January 2007: Below the image are two GOES-13 30-second visible Rapid Scan Imagery loops from 22 December 2006 over Washington DC. (prepared by Dan Lindsey, NOAA/NESDIS/StAR/RAMMB)


04 January 2007: Below the image are links to five GOES-13 1-minute Rapid Scan visible image loops from the 20-21 December 2006 Colorado front range snowstorm. The images are split into 5 loops so that each one is no more than 100 images. Each may still take awhile to load. (prepared by Dan Lindsey, NOAA/NESDIS/StAR/RAMMB)


04 January 2007: A comparison of GOES-12 and GOES-13 visible channel images centered over northeastern Minnesota on 25 December 2006 shows the improvement in navigation accuracy with the new GOES-13 satellite. Click on the links below the image to view animations. (prepared by Scott Bachmeier, CIMSS)


28 December 2006: Below are results of a noise analysis for space-view measurements from the GOES-13 Sounder as determined by CIRA/RAMMB. Results of a similar analysis by CIMSS/ASPB are farther below. Conclusions are: 1) there is an increase in Sounder noise at and around 0800 UTC which is yet unexplained, 2) the noise estimates from RAMMB/CIRA are very similar to those calculated independent by ASPB/CIMSS, and 3) GOES-13 Sounder noise appears to be lower than previous GOES in the longwave IR bands in particular, while other bands have noise similar to GOES-12, but noise in all bands is much lower than instrument specifications. See the PowerPoint presentation for additional details.


22 December 2006: Below is a link to a presentation on Characteristics of GOES-13 Sounder IR Detectors. It includes comparisons of spectral response functions for the GOES-12 and GOES-13 Sounders, striping due to spectral response function differences (showing one detector behaving differently from the other three), and GVAR count profiles and temperature differences for controlled targets during ITTs pre-launch spacecraft thermal/vacuum tests.


15 December 2006: Below are PRELIMINARY REULTS of a noise analysis for space-view measurements from the GOES-13 Sounder as determined by CIMSS/ASPB. Results of a similar analysis by CIRA/RAMMB followed soon (see above), before any conclusions were reached. See the PowerPoint presentation for additional details.


14 December 2006: Below the image are two GOES-13 Rapid Scan Imagery loops from 12 and 13 December 2006. (prepared by Dan Lindsey, NOAA/NESDIS/StAR/RAMMB)


12 December 2006: Below is a GOES-13 visible image of the partially-full moon. The slight line-shifts every 8 lines in the image are due to the fact that that 8 lines are collected with each scan and the moon is moving to the right relative to the fixed-earth earth view of GOES. The larger line-shift in the middle of the moon is due to a longer hesitation between respective scans across the moon.


11 December 2006: During the first weekend of the GOES-13 Science Test, continuous full-disk images were taken every 30 minutes for 2 consecutive days. Click on the links below the images to view animations. (prepared by Scott Bachmeier, CIMSS)


08 December 2006: Below is a GOES-13 visible image showing the development of lake-effect snow (LES) bands across the Great Lakes region, depicting well-defined, persistent LES bands that had developed over Lake Huron. Click on the link below the image to view animations. (prepared by Scott Bachmeier, CIMSS)


07 December 2006: Below is a report on solar contamination during eclipse operations for the GEOS-13 Imager.


17 November 2006: Below are examples of detector-to-detector striping for the GOES-13 Sounder band-7 (12.0 m) compared to GOES-12. It appears that there is about twice as much striping with current GOES-13 Sounder data than with current GOES-12 data, at least in certain Sounder bands.



31 October 2006: The NOAA Science Test is scheduled to begin 4 December 2006 and continue for 3 weeks. For the calendar, see the entry below dated 28 August 2006.


31 October 2006: Below is a link to an extended abstract submitted to the AMS Annual Meeting (Future National Operational Environmental Satellites (FNOES)) to be held in San Antonio TX, 14-18 January 2007.


6 October 2006: Below are preliminary Sounder Cloud Top Pressures (CTP) from GOES-13 compared to GOES-12 (both in the GOES-12 projection) for 1200 UTC on 6 October 2006 (T. Schreiner, CIMSS).


13 September 2006: Below are more examples of stray solar radiation from the sun next to the earth during "eclipse" of GOES-13. It appears that there is a temperature effect on the longwave IR bands as well as the shortwave (3.9 m) band. For details see the presentation that follows the image.


13 September 2006: Below are two sequences of images comparing GOES-13 imagery through eclipse to GOES-12. Rather than one long gap while the sun is behind the earth, there are two gaps when the sun is within view on each side of the earth. For details see the two presentations that follow the images.



11 September 2006: Below is an example of stray solar radiation from the sun next to the earth during "eclipse" of GOES-13. Suggest a smaller/reduced keep out zone (KOZ), since the radiation affects some areas/bands only. For details see the presentation that follows the image.


11 September 2006: Below are before and after plots showing east-west scan-mirror emissivity correction as applied to GOES-13 band-4 (10.7 m) space-view measurements. In the "before" plot, coefficients for GOES-12 were applied to GOES-13; in the "after" plot, coefficients for GOES-13 were generated and applied. For details see the presentation that follows the images.



05 September 2006: Scott Bachmeier of CIMSS has a loop showing the better temporal coverage from GOES-12 during a normal eclipse outage: A comparison of InfraRed channel imagery from GOES-12 and GOES-13 satellites shows the improvement in temporal coverage from GOES-13 during the daily fall season "eclipse period" (when the GOES satellites are briefly in the Earth's shadow). No data is available from GOES-12 during the 2 hour eclipse period on 31 August, but enhanced battery capacity aboard GOES-13 allows continuous monitoring of convective rainbands associated with Tropical Storm Ernesto as they move inland along the Georgia coast. Images and an animation is available on the CIMSS Satellite Blog at http://cimss.ssec.wisc.edu/goes/blog/category/goes-13/.


28 August 2006: Below are likely dates for the 3-week NOAA Science Test. These dates are subject to change, being at the end of the Post Launch Testing for GOES-13. This slide was part of the GOES-13 Contingency Operational Readiness Review (CORR) presented on this date.


25 July 2006: Below are a plot and links to two presentations that summarize the first estimates of noise and detector-to-detector striping for the GOES-13 Imager:


20 July 2006: Below are links to two presentations that show the first GOES-13 calibrated IR data from the Imager and Sounder:


20 July 2006: The first GOES-13 calibrated infrared images were captured at 1800 UTC:

Band-2 (3.9 m) - Shortwave Window

first GOES-13 band-2 full-disk image

Band-3 (6.7 m) - Water Vapor

first GOES-13 band-3 full-disk image

Band-4 (10.7 m) Longwave Window

first GOES-13 band-4 full-disk image

Band-6 (13.3 m) Cloud Heights

first GOES-13 band-6 full-disk image


13 July 2006: Below are links to two presentations that show some of the first GOES-13 visible (Imager and Sounder) and IR (Sounder and Imager) data:


12 July 2006: The first preliminary, un-calibrated GOES-13 infrared images were captured at 1820 UTC:


12 July 2006: For a comparison of GOES-13 Sounder images for all 19 bands vs. GOES-11 Sounder images, see the link to http://cimss.ssec.wisc.edu/goes/g13_report/first_sndr.html. The GOES-13 Sounder images are below:

GOES-13 Sounder images for all 19 bands


06 July 2006: An adjustment to Sounder calibration coefficients was applied by NOAA OSO (Office of Satellite Operations). A comparison showing "before" and "after" this adjustment are shown below:

GOES-13 Sounder Image - fixed


22 June 2006: The first GOES-13 Souder visible images were captured as well. These first un-official images appear quite dark over land surfaces.

first GOES-13 Sounder image


22 June 2006: The first GOES-13 visible images were captured. After the first few preliminary sectored images, a full-disk visible image was captured for 1801 UTC. The first full-disk image at 1730 UTC was collected as well, but is not currently available. Fellow collaborators at UW/CIMSS/ASPB and NESDIS/StAR in Washington DC were able to process the first image, see http://www.ssec.wisc.edu/media/spotlight/goes13/.

GOES-13 Full-Disk visible image


04 June 2006: GOES-N successfully completed the necessary Liquid Apogee Motor Firings to get to geosynchronous orbit at 89.5 west longitude to became GOES-13.


24 May 2006: GOES-N was successfully launched at 2211 UTC.

Relevant GOES-13 information/documentation:

Animated mailbox
If you would like to be (or know of someone else who should be) on the mailing list to be notified of updates to GOES Science Test information, send an e-mail message to: hillger@cira.colostate.edu or Don.Hillger@noaa.gov