Recent Improvements to Suomi NPP Ozone Mapper Profiler Suite Nadir Mapper Sensor Data Records

Pan, Chunhui; Weng, Fuzhong; Beck, Trevor; Flynn, L. E.; Ding, Shouguo

doi:10.1109/tgrs.2017.2714103

Cited by 7 publications

(13 citation statements)

References 12 publications

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“…Coldewey-Egbers et al (2008) have shown that the degradation is particularly severe in the UV channels 1 ( ∼ 70 %-90 %) and 2 (∼ 35 %-65 %), covering the spectral range of 240-316 and 311-405 nm, respectively. Similar changes are observed for SCIAMACHY and GOME-2 (Noël et al, 2007;Bramstedt et al, 2009;Munro et al, 2016), whereas they are considerably smaller for OMI (Schenkeveld et al, 2017).…”

Section: Introductionsupporting

confidence: 76%

“…4). The LUT is generated by smoothing the time series of each polynomial wavelength coefficient using a Savitzky-Golay filter (Press et al, 1992) with a filter width of 250 days. Figure 5 shows, for each channel, the first polynomial coefficient (a 0 ) and the corresponding smoothed curve as a function of time.…”

Section: Sun Mean Reference Spectrum and Degradation Correction Algormentioning

confidence: 99%

“…In channels 1 and 2 third-order polynomials are used, whereas in channels 3 and 4 fourth-order polynomials are used. At least seven spectral lines per channel are needed for the fit, which is performed using the singular value decomposition algorithm (Press et al, 1992).…”

Section: Spectral Calibrationmentioning

confidence: 99%

“…For example, satellite sensors are required to detect ozone trends of the order of 1 % decade −1 (GCOS, 2011). Amongst other things, in our study particular attention was paid to the analysis of the long-term performance and stability of the spectral calibration, since errors in wavelength assignment may have a significant impact on the Earth albedo and trace gas retrievals (Voors et al, 2006;Pan et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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The Global Ozone Monitoring Experiment: review of in-flight performance and new reprocessed 1995–2011 level 1 product

et al. 2018

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Abstract. The Global Ozone Monitoring Experiment (GOME) on-board the second European Remote Sensing satellite provided measurements of atmospheric constituents such as ozone and other trace gases for the 16-year period from 1995 to 2011. In this paper we present a detailed analysis of the long-term performance of the sensor and introduce the new homogenised and fully calibrated level 1 product that has been generated using the recently developed GOME Data Processor level-0-to-1b (GDP-L1) Version 5.1. By means of the various in-flight calibration parameters, we monitor the behaviour and stability of the instrument during the entire mission. Severe degradation of the optical components has led to a significant decrease in intensity, in particular in channels 1 and 2, which cover the spectral ranges of 240–316 and 311–405 nm, respectively. Thus, a soft correction based on using the Sun as a stable calibration source is applied. Revision and optimisation of other calibration algorithms such as the wavelength assignment, polarisation correction, and dark current correction resulted in an improved and homogeneous level 1 product that can be regarded as the European satellite reference data for successor atmospheric composition sensors and that provides an excellent prerequisite for further exploitation of GOME measurements.

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Section: Introductionsupporting

confidence: 76%

Section: Sun Mean Reference Spectrum and Degradation Correction Algormentioning

confidence: 99%

Section: Spectral Calibrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Global Ozone Monitoring Experiment: review of in-flight performance and new reprocessed 1995–2011 level 1 product

et al. 2018

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“…Validation of the current calibration is conducted via an intersensor NR comparison between OMPS Nadir Mapper (NM) and NP with a focus on the higher sensor sensitivity spectral region. OMPS NM is a well calibrated UV spectrometer with 1% or less radiometric calibration uncertainty within its nadir view of 16.6° (Pan et al, ) that is co‐boresighted with the NP FOV to 0.1° (3 sigma level) accuracy. A comparison of NP and NM provides estimates of the NP data quality.…”

Section: Intersensor Comparisonmentioning

confidence: 99%

Spectral Performance and Calibration of the Suomi NPP OMPS Nadir Profiler Sensor

Pan

Weng

Flynn

2017

Earth and Space Science

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The Ozone Mapping and Profiler Suite (OMPS) is one of five instruments on board the Suomi National Polar‐orbiting Partnership (Suomi NPP) satellite. As part of OMPS, the Nadir Profiler (NP) spectrometer measures Earth's albedo in ultraviolet wavelengths from 250 to 310 nm to profile Earth atmospheric ozone concentration. Since launch in 2011, many changes in the NP radiometric and spectrometric calibration have been made to improve sensor data quality. The most challenging issue is to characterize instrument on‐orbit spectral calibration and to maintain a stable spectral performance to meet sensor design criteria. Validation of the NP sensor data found an average of 3–5% error in the sensor albedo measurements that exceeded 2% requirement, creating 1–2% uncertainty in ozone profile. Data analysis attributes the error to prelaunch calibration uncertainty, ground‐to‐orbit dichroic changes, and on‐orbit detector wavelength registration drifts. A recent update of calibration significantly improved spectral wavelength knowledge as well as the accuracy of the measured solar spectra. As a result, the wavelength‐dependent albedo error is significantly reduced and generally meets the radiometric uncertainty requirement of 2%.

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Spectral Calibration of NOAA-20 OMPS Sensor Data Record

Pan

Zhou

Cao

et al. 2019

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium

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Recent Improvements to Suomi NPP Ozone Mapper Profiler Suite Nadir Mapper Sensor Data Records

Cited by 7 publications

References 12 publications

The Global Ozone Monitoring Experiment: review of in-flight performance and new reprocessed 1995–2011 level 1 product

The Global Ozone Monitoring Experiment: review of in-flight performance and new reprocessed 1995–2011 level 1 product

Spectral Performance and Calibration of the Suomi NPP OMPS Nadir Profiler Sensor

Spectral Calibration of NOAA-20 OMPS Sensor Data Record

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