Consistency assessment of Atmospheric Infrared Sounder and Infrared Atmospheric Sounding Interferometer radiances: Double differences versus simultaneous nadir overpasses

Wang, Likun; Goldberg, Mitch; Wu, Xiangqian; Cao, Changyong; Iacovazzi, R.; Yu, Fangfang; Li, Yaping

doi:10.1029/2010jd014988

Cited by 64 publications

(40 citation statements)

References 22 publications

(29 reference statements)

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“…Both of the two hardware approaches achieve nearly the same spectral characteristics. Details on their calibration and performance are found in [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Inter-Comparison of S-NPP VIIRS and Aqua MODIS Thermal Emissive Bands Using Hyperspectral Infrared Sounder Measurements as a Transfer Reference

Xiong

2016

Remote Sensing

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This paper compares the calibration consistency of the spectrally-matched thermal emissive bands (TEB) between the Suomi National Polar-orbiting Partnership (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) and the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS), using observations from their simultaneous nadir overpasses (SNO). Nearly-simultaneous hyperspectral measurements from the Aqua Atmospheric Infrared Sounder(AIRS) and the S-NPP Cross-track Infrared Sounder (CrIS) are used to account for existing spectral response differences between MODIS and VIIRS TEB. The comparison uses VIIRS Sensor Data Records (SDR) in MODIS five-minute granule format provided by the NASA Land Product and Evaluation and Test Element (PEATE) and Aqua MODIS Collection 6 Level 1 B (L1B) products. Each AIRS footprint of 13.5 km (or CrIS field of view of 14 km) is co-located with multiple MODIS (or VIIRS) pixels. The corresponding AIRS-and CrIS-simulated MODIS and VIIRS radiances are derived by convolutions based on sensor-dependent relative spectral response (RSR) functions. The VIIRS and MODIS TEB calibration consistency is evaluated and the two sensors agreed within 0.2 K in brightness temperature. Additional factors affecting the comparison such as geolocation and atmospheric water vapor content are also discussed in this paper.

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“…Both of the two hardware approaches achieve nearly the same spectral characteristics. Details on their calibration and performance are found in [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Inter-Comparison of S-NPP VIIRS and Aqua MODIS Thermal Emissive Bands Using Hyperspectral Infrared Sounder Measurements as a Transfer Reference

Xiong

2016

Remote Sensing

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“…The brightness temperatures are 25 stored in 2-byte integers using data packing (e.g., CF convention scale_factor and add_offsets). Brightness temperature noise is generally less than 0.25 K (Ellrod et al, 1998) which was later evaluated by Wang et al (2011) who found errors at night on the order of 0.15 K.…”

Section: Calibrationmentioning

confidence: 99%

“…Post-launch analysis has deemed IR calibration accurate to within 0.15 to 0.25 K (Ellrod et al, 1998;Wang et al, 2011). The visible calibration was provided by Inamdar and Knapp (2015), where the uncertainty is about 3% (in scaled reflectance units).…”

Section: Uncertaintymentioning

confidence: 99%

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Gridded Satellite (GridSat) GOES and CONUS data

Knapp¹,

Wilkins²

2018

Preprint

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“…Potential drawbacks of these SNOs are a limited dynamic range of measured radiances and problems in characterising scenes over bright snow-or ice-covered surfaces. Similar to Wang et al (2011), who applied double differencing to inter-calibrate infrared radiances of two polar-orbiting sounders, we explore the use of the SEVIRI instrument to transfer calibrations from one polar imager to another. In this way, MODIS-Terra as well as two Advanced Very High Resolution Radiometers (AVHRRs) are tied to MODIS-Aqua.…”

Section: J F Meirink Et Al: Solar Channel Inter-calibration Using mentioning

confidence: 99%

Inter-calibration of polar imager solar channels using SEVIRI

2013

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Abstract. Accurate calibration of satellite imagers is a prerequisite for using their measurements in climate applications. Here we present a method for the inter-calibration of geostationary and polar-orbiting imager solar channels based on regressions of collocated near-nadir reflectances. Specific attention is paid to correcting for differences in spectral response between instruments. The method is used to calibrate the solar channels of the Spinning Enhanced Visible and Infrared Imager (SEVIRI) on the geostationary Meteosat satellite with corresponding channels of the Moderate Resolution Imaging Spectroradiometer (MODIS) on the polar-orbiting Aqua satellite. The SEVIRI operational calibration is found to be stable during the years 2004 to 2009, but offset by −8, −6, and +3.5 % for channels 1 (0.6 µm), 2 (0.8 µm), and 3 (1.6 µm), respectively. These results are robust for a range of choices that can be made regarding data collocation and selection, as long as the viewing and illumination geometries of the two instruments are matched. Uncertainties in the inter-calibration method are estimated to be 1 % for channel 1 and 1.5 % for channels 2 and 3. A specific application of our method is the inter-calibration of polar imagers using SEVIRI as a transfer instrument. This offers an alternative to direct inter-calibration, which in general has to rely on high-latitude collocations. Using this method we have tied MODIS-Terra and Advanced Very High Resolution Radiometer (AVHRR) instruments on National Oceanic and Atmospheric Administration (NOAA) satellites 17 and 18 to MODIS-Aqua for the years 2007 to 2009. While reflectances of the two MODIS instruments differ less than 2 % for all channels considered, deviations of an existing AVHRR calibration from MODIS-Aqua reach −3.5 and +2.5 % for the 0.8 and 1.6 µm channels, respectively.

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Consistency assessment of Atmospheric Infrared Sounder and Infrared Atmospheric Sounding Interferometer radiances: Double differences versus simultaneous nadir overpasses

Cited by 64 publications

References 22 publications

Inter-Comparison of S-NPP VIIRS and Aqua MODIS Thermal Emissive Bands Using Hyperspectral Infrared Sounder Measurements as a Transfer Reference

Inter-Comparison of S-NPP VIIRS and Aqua MODIS Thermal Emissive Bands Using Hyperspectral Infrared Sounder Measurements as a Transfer Reference

Gridded Satellite (GridSat) GOES and CONUS data

Inter-calibration of polar imager solar channels using SEVIRI

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