Paper
8 September 2015 Tropical simultaneous nadir observations for IR sounder evaluation and comparison
Author Affiliations +
Abstract
Simultaneous Nadir Observations (SNOs) contain thousands of pairs of observations taken within 8 km and 10 minutes. SNOs have been very useful for comparisons in polar conditions. But classic SNO pairing criteria have very low yield in the tropics, making these SNOs less useful for investigating instrument performance for hotter scenes or scenes with high contrast. We introduce a modified methodology, which finds pairs of matched spectra in a wider angular range but is restricted to the tropics. We illustrate this with AIRS and CrIS data. Insight into instrument differences is gained from statistical distributions of the residual differences between the matched pairs. A sample analysis compares AIRS and CrIS brightness temperature at 900 cm-1 as function of scene brightness temperature. The proposed method may be applicable to matchups of other sensors on different spacecraft.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Evan M. Manning and Hartmut H. Aumann "Tropical simultaneous nadir observations for IR sounder evaluation and comparison", Proc. SPIE 9607, Earth Observing Systems XX, 96070L (8 September 2015); https://doi.org/10.1117/12.2187151
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Climatology

Environmental sensing

Calibration

Space operations

Infrared radiation

Phase modulation

Statistical analysis

RELATED CONTENT

Detection of extremes with AIRS and CrIS
Proceedings of SPIE (September 23 2013)
Space view issues for hyperspectral sounders
Proceedings of SPIE (September 23 2013)

Back to Top