IASI: Difference between revisions

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| name = Infrared Atmospheric Sounding Interferometer
| name = Infrared Atmospheric Sounding Interferometer
| acronym = IASI
| acronym = IASI
| launch date =
| orbit =  
| orbit =  
| measurement period=  
| measurement period= 29 May 2007 - Present
|measurement principle=Fourier transform spectrometer<br>(3.4 -15.5 μm)  
| measurement principle=Fourier transform spectrometer<br>(3.6 - 15.5 μm)  
|agency=ESA
| agency=ESA
|image =
| image =
|satellite=MetOp
| satellite=MetOp-A, MetOp-B
|launch date =
| launch date = 2006, 2012
}}
}}


'''IASI'''  is a satellite FTIR.
'''IASI'''  is a satellite Fourier Transform InfraRed spectroscopy (FTIR) instrument.


IASI is on-board MetOp-A, a European meteorological satellite
that has been operational from 2007. MetOp-A is the
first of three satellites that are planned to operate for fourteen
years (MetOp-B was lauched on 17 September 2013).
It crosses the equator on the descending node at 9:30 a.m.
local time. IASI is a Fourier transform spectrometer that
covers the spectral range 645 to 2760 cm<sup>−1</sup> (3.62 – 15.5 μm)
with a spectral sampling of 0.25 cm<sup>−1</sup> and an apodized spectral
resolution of 0.5 cm<sup>−1</sup> (Blumstein et al., 2004).<ref>
Blumstein, D., Chalon, G., Carlier, T., Buil, C., H´ebert, P., Maciaszek,
T., Ponce, G., Phulpin, T., Tournier, B., Sim´eoni, D., PAstruc,
Clauss, A., Kayal, G., and Jegou, R.: IASI Instrument: Technical
overview and measured performances, Proc. SPIE, 5543,
196–207, 2004. </ref>
It is specified to have a radiometric accuracy of 0.25 – 0.58 K and
a field-of-view of 12 km at nadir. It has a 2200 km wide
swath and achieves near uniform global coverage in 12 h (although
there are some gaps between orbits near the Equator).
More information on IASI can be
founded in Clerbaux et al. (2009).<ref >Clerbaux, C., Boynard, A., Clarisse, L., George, M., Hadji-Lazaro,
J., Herbin, H., Hurtmans, D., Pommier, M., Razavi, A., Turquety,
S., Wespes, C., and Coheur, P.-F.: Monitoring of atmospheric
composition using the thermal infrared IASI/MetOp sounder, Atmos.
Chem. Phys., 9, 6041–6054, doi:10.5194/acp-9-6041-2009,
2009.</ref>
IASI level 1c data (geolocated and apodized spectra) can be obtained from
both the British Atmospheric Data Centre (BADC) archive
<ref>http://badc.nerc.ac.uk/home/index.html</ref>
and EUMETSAT Unified Meteorological Archive Facility (UMARF) archive <ref>https://eoportal.eumetsat.int/</ref>.


==References==
==References==

Latest revision as of 16:20, 7 November 2013

IASI
Infrared Atmospheric Sounding Interferometer
Satellite MetOp-A, MetOp-B
Agency ESA
Launch Date 2006, 2012
Measurement Period 29 May 2007 - Present
Measurement Principle Fourier transform spectrometer
(3.6 - 15.5 μm)

IASI is a satellite Fourier Transform InfraRed spectroscopy (FTIR) instrument.

IASI is on-board MetOp-A, a European meteorological satellite that has been operational from 2007. MetOp-A is the first of three satellites that are planned to operate for fourteen years (MetOp-B was lauched on 17 September 2013). It crosses the equator on the descending node at 9:30 a.m. local time. IASI is a Fourier transform spectrometer that covers the spectral range 645 to 2760 cm−1 (3.62 – 15.5 μm) with a spectral sampling of 0.25 cm−1 and an apodized spectral resolution of 0.5 cm−1 (Blumstein et al., 2004).[1] It is specified to have a radiometric accuracy of 0.25 – 0.58 K and a field-of-view of 12 km at nadir. It has a 2200 km wide swath and achieves near uniform global coverage in 12 h (although there are some gaps between orbits near the Equator). More information on IASI can be founded in Clerbaux et al. (2009).[2]

IASI level 1c data (geolocated and apodized spectra) can be obtained from both the British Atmospheric Data Centre (BADC) archive [3] and EUMETSAT Unified Meteorological Archive Facility (UMARF) archive [4].

References

  1. Blumstein, D., Chalon, G., Carlier, T., Buil, C., H´ebert, P., Maciaszek, T., Ponce, G., Phulpin, T., Tournier, B., Sim´eoni, D., PAstruc, Clauss, A., Kayal, G., and Jegou, R.: IASI Instrument: Technical overview and measured performances, Proc. SPIE, 5543, 196–207, 2004.
  2. Clerbaux, C., Boynard, A., Clarisse, L., George, M., Hadji-Lazaro, J., Herbin, H., Hurtmans, D., Pommier, M., Razavi, A., Turquety, S., Wespes, C., and Coheur, P.-F.: Monitoring of atmospheric composition using the thermal infrared IASI/MetOp sounder, Atmos. Chem. Phys., 9, 6041–6054, doi:10.5194/acp-9-6041-2009, 2009.
  3. http://badc.nerc.ac.uk/home/index.html
  4. https://eoportal.eumetsat.int/