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Enhanced Striping Observed in GOES-13 Sounder Compared to GOES-12

The GOES-13 Sounder demonstrates a more pronounced striping effect than its predecessor, GOES-12, especially evident in band 7 (12 µm). This striping phenomenon is observable in both GVAR count and radiance space, which may influence product outputs. The analysis by Jim Nelson, Don Hillger, and Tim Schmit provides a comparison of images in their native projections, highlighting the differences in radiance averages between the two satellites and its implications for meteorological data interpretation.

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Enhanced Striping Observed in GOES-13 Sounder Compared to GOES-12

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  1. GOES-13 Striping The GOES-13 Sounder now shows much more striping than GOES-12 in some bands, for example band 7 (12 um). The striping is seen in both GVAR count and radiance space (and brightness temperature). This level of striping can affect products. Jim Nelson Don Hillger Tim Schmit

  2. Both images are shown in their native projections.

  3. IMGLIST A.6313 6414 Image file directory listing for:A --- -------------  ------------  --------  ---- ---- ------------ 6313  G-12 SND       9 NOV 06313  17:46:00    35   87 1-19 6314  G-13 SND       9 NOV 06313  17:46:00    35   94 1-19 IMGLIST: done LINESTAT 6313 6313 7 7 TYPE=RAD #           79     2006313      174600 (GOES-12) #DECT AVG     VAR         BAND  NLINES   MIN      MAX 1       103.12       19.84           7         49.         0.0       153.0 2       103.14       19.91           7         49.         0.0       150.8 3       103.48       19.91           7         49.         0.0       150.8 4       103.38       19.92           7         49.         0.0       150.0 LINESTAT 6314 6314 7 7 TYPE=RAD #          181     2006313      174600 (GOES-13) #DECT AVG     VAR         BAND  NLINES   MIN      MAX 1       106.25       18.97           7         49.         0.0       151.8 2       106.25       18.94           7         49.         0.0       151.4 3       106.70       18.87           7         49.         0.0       171.8 4       107.20       19.44           7         49.         0.0       157.0 Radiance-space Note the larger spread of GOES-13 AVG (average) values

  4. Sounder DPI of TPW GOES-12 Native Projection

  5. Sounder DPI of TPW GOES-13 Native Projection

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