1. GOES-13 Sounder Noise Don Hillger NOAA/NESDIS/StAR/RAMMB CIRA/Colorado State University

2. Hourly GOES-13 Sounder noise from 24-h of limb (earth and space) views, East limb of earth, Julian Day 343-344 Note the peak in noise at and around 0746 UTC

3. Hourly GOES-13 Sounder noise from 24-h of limb (earth and space) views, East limb of earth, Julian Day 344-345 Note the peak in noise at and around 0746 UTC

4. Hourly GOES-13 Sounder noise from 24-h of limb (earth and space) views, West limb of earth, Julian Day 343-344 Note the peak in noise at and around 0816 UTC

5. Hourly GOES-13 Sounder noise from 24-h of limb (earth and space) views, West limb of earth, Julian Day 344-345 Note the peak in noise at and around 0816 UTC

6. Sounder Band Central Wavelength (μm) East Limb West Limb Limb Average CIMSS Analysis 13-bit GVAR counts (0-8191)(mW/(m 2 ·sr·cm -1 )) 114.7120.820.9 0.32 214.3717.317.017.20.250.26 314.0614.313.914.10.230.24 413.649.178.929.050.180.19 513.378.188.058.120.180.19 612.663.954.013.980.0950.11 712.023.143.563.350.0860.10 811.034.123.994.060.100.12 99.715.955.865.910.110.12 107.4311.511.311.40.0810.09 117.0211.210.811.00.0460.05 126.5122.722.522.60.0630.07 134.577.517.287.400.00610.007 144.5211.211.111.20.00640.007 154.4618.317.618.00.00550.006 164.134.013.913.960.00300.003 173.983.883.903.890.00260.003 183.742.672.462.570.00110.001 GOES-13 Sounder noise (From 48 hours of limb (earth and space) views on Julian days 343-345) Note that the noise estimates are very similar to those calculated independently by CIMSS.

7. Sounder Band Central Wavelength (μm) GOES-13GOES-12GOES-11GOES-10GOES-9GOES-8SPEC (mW/(m 2 ·sr·cm -1 )) 114.70 0.32 0.770.670.711.161.760.66 214.40 0.25 0.610.51 0.801.210.58 314.10 0.23 0.450.370.410.560.980.54 413.90 0.18 0.390.360.410.460.740.45 513.40 0.18 0.34 0.360.450.680.44 612.70 0.095 0.140.170.160.190.320.25 712.00 0.086 0.11 0.090.130.200.16 811.00 0.10 0.110.140.120.090.130.16 99.70 0.11 0.140.130.100.110.160.33 107.40 0.081 0.0990.090.070.08 0.16 117.00 0.046 0.0590.060.040.050.070.12 126.50 0.063 0.11 0.070.090.110.15 134.57 0.0061 0.00620.0060.0070.0080.0120.013 144.52 0.0064 0.00620.0070.0050.0070.0100.013 154.45 0.0055 0.00660.0060.0050.0060.0090.013 164.13 0.0030 0.00240.003 0.0040.008 173.98 0.0026 0.00220.0030.0020.0030.0040.008 183.70 0.0011 0.000940.001 0.0020.004 Summary of the noise for GOES-8 through GOES-13 Sounder Bands (The Specification (SPEC) values are also listed)