Direct Comparison of Infrared Channel Measurements by Two ABIs to Monitor Their Calibration Stability
Abstract
:1. Introduction
2. Algorithm of GEO-GEO Inter-Comparison
2.1. Spectral Matching
2.2. Temporal Matching
2.3. Geolocation Matching
2.4. Spatial Constraint
2.5. Viewing Zenith Matching
2.6. Uniformity
2.7. Tb Difference at Equivalent Brightness Temperature 300 K
3. Characteristics of GEO-GEO Inter-Comparison
3.1. Temperature Range
3.2. Mean Differences
3.3. Uncertainty
4. Applications of GEO-GEO Comparisons
4.1. Monitoring Calibration in near Real Time
4.2. Revising Calibration Algorithm
4.3. Improving Calibration Operation
4.4. Detecting Calibration Anomalies
4.5. Assessing Calibration Stability
5. Summary and Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A. Uniformity Considerations
Appendix A.1. Displacement Due to Parallax
Appendix A.2. Displacement Due to Atmospheric Refraction
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Satellite | Launch | Operational | Nominal SSP | Actual SSP | Status |
---|---|---|---|---|---|
GOES-16 | 19 November 2016 | 18 December 2017–7 April 2025 | 75.0°W | 75.2°W 18 December 2017–17 March 2025; 75.5°W 17 March 2025–7 April 2025 | Storage |
GOES-17 | 1 March 2018 | 12 February 2019–4 January 2023 | 137.0°W | 137.2°W (12 February 2019–15 July 2022) | Storage |
137.3°W (15 July 2022–4 January 2023) | |||||
GOES-18 | 1 March 2022 | 4 January 2023 | 137.0°W | 137.0°W since 21 July 2022 | Operational |
GOES-19 | 25 June 2024 | 7 April 2025 | 75.0°W | 75.2°W | Operational |
Channel No. | Central Wavelength (µm) | Noise (NEdT at 300 K) (K) |
---|---|---|
Ch07 | 3.9 | 0.1 |
Ch08 | 6.2 | 0.1 |
Ch09 | 6.9 | 0.1 |
Ch10 | 7.3 | 0.1 |
Ch11 | 8.4 | 0.1 |
Ch12 | 9.6 | 0.1 (0.12) |
Ch13 | 10.3 | 0.1 |
Ch14 | 11.2 | 0.1 |
Ch15 | 12.3 | 0.1 |
Ch16 | 13.3 | 0.3 (0.37) |
Ch07 | Ch08 | Ch09 | Ch10 | Ch11 | Ch12 | Ch13 | Ch14 | Ch15 | Ch16 | |
---|---|---|---|---|---|---|---|---|---|---|
G16/G18 | 0.74 | 0.13 | 0.15 | 0.23 | 0.19 | 0.18 | 0.28 | 0.19 | 0.22 | 0.34 |
G17 | 0.70 | 0.20 | 0.20 | 0.40 | 0.20 | 1.00 | 0.35 | 0.30 | 0.90 | 3.37 |
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Yu, F.; Wu, X.; Yoo, H.; Xu, H.; Qian, H. Direct Comparison of Infrared Channel Measurements by Two ABIs to Monitor Their Calibration Stability. Remote Sens. 2025, 17, 1656. https://doi.org/10.3390/rs17101656
Yu F, Wu X, Yoo H, Xu H, Qian H. Direct Comparison of Infrared Channel Measurements by Two ABIs to Monitor Their Calibration Stability. Remote Sensing. 2025; 17(10):1656. https://doi.org/10.3390/rs17101656
Chicago/Turabian StyleYu, Fangfang, Xiangqian Wu, Hyelim Yoo, Hui Xu, and Haifeng Qian. 2025. "Direct Comparison of Infrared Channel Measurements by Two ABIs to Monitor Their Calibration Stability" Remote Sensing 17, no. 10: 1656. https://doi.org/10.3390/rs17101656
APA StyleYu, F., Wu, X., Yoo, H., Xu, H., & Qian, H. (2025). Direct Comparison of Infrared Channel Measurements by Two ABIs to Monitor Their Calibration Stability. Remote Sensing, 17(10), 1656. https://doi.org/10.3390/rs17101656