GOES-10: South American coverage during GOES-12 RSO

January 5th, 2007 |

GOES-12 vs GOES-10 coverage

During periods when the GOES-12 imager is placed into Rapid Scan Operations (RSO) — as was the case on 05 January 2007 to monitor severe convection over the southeastern US — the coverage of the southern 2/3 of the South American continent is limited to only 1 image every 3 hours (when GOES-12 does a full disk scan). The color-enhanced IR window (IRW) image comparison above shows the difference in South American coverage between GOES-12 (in RSO) and GOES-10 (in routine operations) at 20:25/20:28 UTC, and Java animations of GOES-12 and GOES-10 imagery from that day further demonstrate the value of having the GOES-10 satellite positioned at 60º W longitude to support the Earth Observation Partnership of the Americas (EOPA) project. During the GOES-12 RSO period, which began at 18:30 UTC on that day, the entire South American continent was sampled 3-4 times per hour with GOES-10, allowing southern hemisphere meterologists to monitor the widespread convection and other phenomena that were occurring over that continent. The latest GOES-10 sounder and imager products are available on the CIMSS GOES Realtime Derived Products site.

Farewell to GOES-13…

January 5th, 2007 |

GOES-13 IR image

05 January 2007 was the final day of the GOES-13 Post-Launch NOAA Science Test; following the final image at 09:45 UTC (above), the satellite was placed into on-orbit storage until it is needed to replace one of the other operational GOES. This also marked the final opportunity to view the western hemisphere using imagery from 4 different GOES perspectives (below).
GOES-10/GOES-11/GOES-12/GOES-13 IR images

GOES-10: Southern Hemisphere Coverage

December 21st, 2006 |

GOES-10 Sounder coverage (animated GIF)

GOES-10 (which is currently located at approximately 60 degrees West longitude) imager and sounder data are currently being ingested by the SSEC Data Center in support of the Earth Observation Partnership of the Americas (EOPA) project. The animated GIF of GOES-10 sounder coverage (above; Java animation) shows the 4 separate sectors that are scanned at 60 minute intervals. Examples of all 19 channels on the GOES-10 sounder are shown for sector 1, sector 2, sector 3 and sector 4. Of particular interest is the warm signature of the Andes Mountains in the sector 4 images, which is evident on the water vapor (channel 10) and CO2 absorption bands (channels 3,4,5) as well as the other IR channels.

An animated GIF of GOES-10 imager IR window channel images (below) shows the larger areal coverage and improved temporal resolution of the GOES-10 imager (Java animation), which has 1 visible and 4 IR channels. These GOES-10 imager and sounder images are shown in their native satellite projections (no remapping has been done).
GOES-10 imager IR window (animated GIF)

Final day of GOES-10 SRSO

October 2nd, 2006 |

Beginning on 23 August, the GOES-10 satellite was placed into continuous Super Rapid Scan Operations (SRSO) mode, providing images at 1-minute intervals over a limited region of the US. 02 October was the final day of GOES-10 SRSO, and some of the interesting features that were apparent on the visible channel imagery included:

GOES-10 visible animation
(1) a distinct “aircraft dissipation trail” (10 MB QuickTime animation, above) running north-south through a patch of cloudiness located over northeastern Kansas. GOES-12 10.7 micrometer cloud top temperatures in that particular cloud feature were in the -25 to -35 C range, and GOES Sounder Cloud Top Heights were generally 25-30 Kft, suggestive of cirrus clouds that were likely composed of ice particles; the MODIS Cloud Phase product a few hours later did in fact indicate mostly ice phase in that area of cloudiness as it moved eastward across the Kansas/Missouri border region. Small particles in the aircraft exhaust may have acted as effective ice condensation nuclei, causing the cloud ice particles to grow and begin falling out of the cloud (creating the aircraft dissipation trail signature);
GOES-10 visible animation
(2) morning dissipation of valley fog (12 MB QuickTime animation, above) over parts of the central Appalachian Mountains region (map overlay);

GOES-10 visible animation
(3) development of severe convection over northern Illinois and southern Wisconsin (36 MB QuickTime animation, above) which produced numerous reports of heavy rain, hail, and damaging winds (SPC storm reports).