IASI: Difference between revisions
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{{Infobox satellite instrument | |||
| name = Infrared Atmospheric Sounding Interferometer | |||
| acronym = IASI | |||
| orbit = | |||
| measurement period= 29 May 2007 - Present | |||
| measurement principle=Fourier transform spectrometer<br>(3.6 - 15.5 μm) | |||
| agency=ESA | |||
| image = | |||
| satellite=MetOp-A, MetOp-B | |||
| 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
| 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
- ↑ 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.
- ↑ 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.
- ↑ http://badc.nerc.ac.uk/home/index.html
- ↑ https://eoportal.eumetsat.int/