Design and development of IASI instrument

Siméoni, Denis; Astruc, Patrick; Miras, Didier; Alis, Claude; Andreis, Odile; Scheidel, Denis; Degrelle, Cyril; Nicol, Patrick; Bailly, B.; Guiard, Patrice; Clauss, Alain; Blumstein, Denis; Maciaszek, T.; Chalon, G.; Carlier, Thierry; Kayal, Gohkan

doi:10.1117/12.561090

Cited by 23 publications

(12 citation statements)

References 5 publications

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“…There are many approaches used for satellite intercalibration [e.g., Chander et al, 2013]. This paper describes the use of CLARREO to serve as a reference for infrared satellite intercalibration and quantifies the uncertainty in determining radiometric biases observed between CLARREO and Sun-synchronous sounding sensors such as the Atmospheric Infrared Sounder (AIRS) [Pagano et al, 2003], the Cross-track Infrared Sounder (CrIS) [Han et al, 2013], and the Infrared Atmospheric Sounding Interferometer (IASI) [Siméoni et al, 2004]. Additionally, the intercalibration technique described here is not unique to CLARREO but is shown to be a simple and powerful technique for intercalibration in general.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Climate Absolute Radiance and Refractivity Observatory (CLARREO) ability to serve as an infrared satellite intercalibration reference

et al. 2016

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Climate Absolute Radiance and Refractivity Observatory (CLARREO) is a future mission employing an infrared spectrometer with unprecedented calibration accuracy and the ability to assess its calibration on‐orbit using a novel verification system. Utilizing this capability for satellite intercalibration is a primary objective of the mission. This paper presents a new infrared intercalibration methodology that minimizes the intercalibration uncertainties and provides uncertainty estimates resulting from the scene variability and instrument noise. Results of a simulation study to characterize realistic spatial and temporal matching differences for simultaneous nadir overpasses (SNOs) of CLARREO and existing hyperspectral sounders are presented. This study, along with experience with intercalibration of real data, finds that intercalibration uncertainties are minimized when the SNOs are not screened for sky conditions but instead weighted based on the observed scene variability. Intercalibration performance is investigated for a 90° polar orbit mission and for a Pathfinder mission on the International Space Station, for various potential CLARREO footprint sizes, and as a function of mission length, scene brightness temperature, and wavelength. The results are encouraging and suggest that biases between CLARREO and sounder observations can be determined with low uncertainty and with high time frequency during a CLARREO mission. For example, the simulations suggest that a CLARREO footprint of 50 to 100 km in diameter is optimal for intercalibration, and that the 3 sigma intercalibration uncertainty is less than 0.1 K for channels at infrared window wavelengths using 2 months of accumulated SNOs, and for more absorbing channels with less scene variability the uncertainties are less than 50 mK.

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Section: Introductionmentioning

confidence: 99%

Characterization of the Climate Absolute Radiance and Refractivity Observatory (CLARREO) ability to serve as an infrared satellite intercalibration reference

et al. 2016

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“…2). The spectrum is measured in three wavelength bands (8.26-15.5, 5.0-8.26, and 3.62-5.0 μm; see Siméoni et al 2004), each of which has a separate detector, allowing the continuous spectral coverage with no gaps. In wavenumber (reciprocal wavelength) units the band ranges are 645-1,210, 1,210-2,000, and 2,000-2,760 cm −1 , respectively.…”

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confidence: 99%

Hyperspectral Earth Observation from IASI: Five Years of Accomplishments

Hilton

Armante

August

et al. 2012

Bulletin of the American Meteorological Society

404

313

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The Infrared Atmospheric Sounding Interferometer (IASI) forms the main infrared sounding component of the European Organisation for the Exploitation of Meteorological Satellites's (EUMETSAT's) Meteorological Operation (MetOp)-A satellite (Klaes et al. 2007), which was launched in October 2006. This article presents the results of the first 4 yr of the operational IASI mission. The performance of the instrument is shown to be exceptional in terms of calibration and stability. The quality of the data has allowed the rapid use of the observations in operational numerical weather prediction (NWP) and the development of new products for atmospheric chemistry and climate studies, some of which were unexpected before launch. The assimilation of IASI observations in NWP models provides a significant forecast impact; in most cases the impact has been shown to be at least as large as for any previous instrument. In atmospheric chemistry, global distributions of gases, such as ozone and carbon monoxide, can be produced in near–real time, and short-lived species, such as ammonia or methanol, can be mapped, allowing the identification of new sources. The data have also shown the ability to track the location and chemistry of gaseous plumes and particles associated with volcanic eruptions and fires, providing valuable data for air quality monitoring and aircraft safety. IASI also contributes to the establishment of robust long-term data records of several essential climate variables. The suite of products being developed from IASI continues to expand as the data are investigated, and further impacts are expected from increased use of the data in NWP and climate studies in the coming years. The instrument has set a high standard for future operational hyperspectral infrared sounders and has demonstrated that such instruments have a vital role in the global observing system.

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“…Currently, the hyperspectral data can be obtained from several sensors: the Atmospheric Infrared Sounder (AIRS) on Earth-observing system satellites [15], the Interferometer Atmospheric Sounding Instrument (IASI) on the European meteorological operational satellite program-A (METOP-A) [16,17], and the Cross-track Infrared Sounder (CrIS) on the next-generation National Polar-orbiting Operational Environmental Satellite System [18]. Among them, the CrIS, which was launched in 2011, is the most advanced and is also regarded as the next series of the AIRS.…”

Section: Introductionmentioning

confidence: 99%

Land Surface Temperature and Emissivity Separation from Cross-Track Infrared Sounder Data with Atmospheric Reanalysis Data and ISSTES Algorithm

Zhang

Jiang

et al. 2017

Advances in Meteorology

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The Cross-track Infrared Sounder (CrIS) is one of the most advanced hyperspectral instruments and has been used for various atmospheric applications such as atmospheric retrievals and weather forecast modeling. However, because of the specific design purpose of CrIS, little attention has been paid to retrieving land surface parameters from CrIS data. To take full advantage of the rich spectral information in CrIS data to improve the land surface retrievals, particularly the acquisition of a continuous Land Surface Emissivity (LSE) spectrum, this paper attempts to simultaneously retrieve a continuous LSE spectrum and the Land Surface Temperature (LST) from CrIS data with the atmospheric reanalysis data and the Iterative Spectrally Smooth Temperature and Emissivity Separation (ISSTES) algorithm. The results show that the accuracy of the retrieved LSEs and LST is comparable with the current land products. The overall differences of the LST and LSE retrievals are approximately 1.3 K and 1.48%, respectively. However, the LSEs in our study can be provided as a continuum spectrum instead of the single-channel values in traditional products. The retrieved LST and LSEs now can be better used to further analyze the surface properties or improve the retrieval of atmospheric parameters.

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Design and development of IASI instrument

Cited by 23 publications

References 5 publications

Characterization of the Climate Absolute Radiance and Refractivity Observatory (CLARREO) ability to serve as an infrared satellite intercalibration reference

Characterization of the Climate Absolute Radiance and Refractivity Observatory (CLARREO) ability to serve as an infrared satellite intercalibration reference

Hyperspectral Earth Observation from IASI: Five Years of Accomplishments

Land Surface Temperature and Emissivity Separation from Cross-Track Infrared Sounder Data with Atmospheric Reanalysis Data and ISSTES Algorithm

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