1. 1 Weekly Report on GOES-14 PLT Science Test NOAA / NESDIS / STAR X. Wu, G. Rancic, F. Yu December 18, 2009

2. 2 1. Initial Results of GEO-GEO Comparison for GOES-14 PLT Purpose: Confirm that GOES-14 measurements are comparable with those currently operational (GOES-11/12) to ensure operation continuity. Confirm that GOES-14 measurements are comparable with those currently operational (GOES-11/12) to ensure operation continuity.Method: Collect the collocated data by both GEOs along a narrow strip (~40 km) in the middle of the two to minimize difference due to viewing geometry. Collect the collocated data by both GEOs along a narrow strip (~40 km) in the middle of the two to minimize difference due to viewing geometry.Data: Along 120W for GOES-11/14, 90W for GOES-12/14, 0-50N, every 30 minutes, 2009/12/01 to 2010/01/05. Along 120W for GOES-11/14, 90W for GOES-12/14, 0-50N, every 30 minutes, 2009/12/01 to 2010/01/05.Analysis: This analysis presents comparison of two channels for GOES-12/14 on Dec 16, when GOES-14 emulated GOES-12. This analysis presents comparison of two channels for GOES-12/14 on Dec 16, when GOES-14 emulated GOES-12.

3. 3 GOES14 – GOES12 Imager Visible Channel

4. 4 GOES14 – GOES12 Imager 3.9  m Channel

5. 5 Preliminary Results All channels of GOES-14 Imager are comparable with the counterparts of GOES-11/12. All channels of GOES-14 Imager are comparable with the counterparts of GOES-11/12. Most of the observed differences are likely due to residual BRDF effects. Most of the observed differences are likely due to residual BRDF effects. Further QC is needed for comparison. Further QC is needed for comparison. No instrument issue has been identified. No instrument issue has been identified. More results, including Sounder, will follow. More results, including Sounder, will follow.

6. 6 Purpose: Purpose: Verify GOES-14 Imager and Sounder IR channel calibration. Verify GOES-14 Imager and Sounder IR channel calibration. Establish benchmark for future inter- calibration. Establish benchmark for future inter- calibration. Methods: Methods: GSICS GEO-LEO Inter-Calibration (Wu et al 2009). GSICS GEO-LEO Inter-Calibration (Wu et al 2009). Data Data GOES Imager IR data, AIRS/IASI data since Oct. 28, 2009 GOES Imager IR data, AIRS/IASI data since Oct. 28, 2009 GOES Sounder and IASI data between Nov. 30, 2009-Dec. 13, 2009 GOES Sounder and IASI data between Nov. 30, 2009-Dec. 13, 2009 GOES-14 Imager spectral response functions and the simulated AIRS/IASI spectra GOES-14 Imager (upper) and Sounder (lower) spectral response functions and the simulated AIRS/IASI spectra 2. Initial Bias Evaluation of GOES-14 IR Channels

7. 7 More at http://www.star.nesdis.noaa.gov/smcd/spb/fwu/homepage/GSICS_GOES14_AIRS_IASI.phphttp://www.star.nesdis.noaa.gov/smcd/spb/fwu/homepage/GSICS_GOES14_AIRS_IASI.php Large difference for 3.8  m channel may be due to the BRDF of solar reflection Large bias (1 K) for water vapor channel Unusually large and unstable bias for Ch. 10.7  m in November Smaller bias (-0.5K) for 13.3  m channel -1.28 K -1.15 K +0.96 K +0.95 K +1.01 K -0.06 K -0.54 K -0.51 K -0.03 K +0.17 K +0.16 K -0.08 K 2.1 GOES-14 Imager vs AIRS/IASI

8. 8 Ch. # Channel GOES – IASI (homo. Scene # <84) ab Tb (K) stdv (K) 114.71µm1.240(±0.777)0.976(±0.019)0.2630.177 214.37µm1.244(±0.412)0.972(±0.010)0.1590.236 314.06µm-0.249(±0.300)1.001(±0.006)0.1780.425 413.64µm0.230(±0.258)0.998(±0.004)0.3070.652 513.37µm0.206(±0.305)0.996(±0.005)0.2110.853 612.66µm0.345(±0.301)0.993(±0.004)0.1871.310 712.02µm0.3459±0.287)0.991(±0.004)0.001.138 811.03µm0.269(±0.243)0.993(±0.004)-0.0480.935 99.71µm0.108(±0.099)0.998(±0.004)0.1620.613 107.43µm0.005(±0.05)0.999(±0.004)-0.0470.448 117.02µm0.031(±0.038)0.992(±0.005)-0.1850.389 126.51µm0.036(±0.024)0.980(±0.008)-0.1440.348 134.57µm0.0002(±0.001)1.012(±0.004)0.2140.364 144.52µm-0.0009(±0.001)0.9997(±0.004)-0.0310.287 154.45µm-0.0007(±0.001)1.027(±0.007)0.2140.364 164.13µm-0.002(±0.006)1.004(±0.004)-0.0310.287 173.98µm-0.0039(±0.0005)1.013(±0.004)-0.2230.549 18*3.74µm-0.011(±0.001)1.949(±0.008)12.010.837 *: IASI does not cover this channel fully 2.2 GOES-14 Sounder vs IASI Much less bias for SW channels

9. 9 Purpose: Purpose: Confirm compliance of instrument spec. Confirm compliance of instrument spec. Establish benchmark for future Instrument Performance Monitoring. Establish benchmark for future Instrument Performance Monitoring. Methods: Methods: Standard deviation of space looks. Standard deviation of space looks. Standard deviation of blackbody looks will follow. Standard deviation of blackbody looks will follow. Data Data 11/30 – 12/14 11/30 – 12/14 Analysis: Analysis: Mean noises are presented. Agree with CIMSS results. Mean noises are presented. Agree with CIMSS results. Detailed analysis will follow. Detailed analysis will follow. 3. Initial Noise Evaluation of GOES-14 IR Channels

10. 10 Preliminary Results

11. 11 Purpose: Purpose: Detect/Confirm instrument performance anomaly. Detect/Confirm instrument performance anomaly. Diagnose for root cause Diagnose for root cause Verify efficacy of resolution Verify efficacy of resolution Methods: Methods: Plot telemetry data at various time scales Plot telemetry data at various time scales Data Data GVAR Block 11. GVAR Block 11. Analysis: Analysis: Zero space count for Imager visible channel noon to midnight – space look side? Zero space count for Imager visible channel noon to midnight – space look side? More at http://www.star.nesdis.noaa.gov/smcd/spb/fwu /homepage/GOES14_Imager_IPM.php More at http://www.star.nesdis.noaa.gov/smcd/spb/fwu /homepage/GOES14_Imager_IPM.php http://www.star.nesdis.noaa.gov/smcd/spb/fwu /homepage/GOES14_Imager_IPM.php http://www.star.nesdis.noaa.gov/smcd/spb/fwu /homepage/GOES14_Imager_IPM.php SPLK for GOES-14 Imager visible channel 4. GOES-14 Instrument Performance Monitoring