ATMOSPHERIC PARAMETERS OVER THE MARGINAL ICE ZONE RETREIVAL FROM ANSR/AMSR-E DATA
A direct radiative transfer model, 478 radiosondes complimented by the cloud liquid water content profiles and the underlying surface temperatures and emissivities were used to simulate the brightness temperatures T Bs over the Marginal Ice Zone at ADEOS-II AMSR and Aqua AMSR-E frequencies. The prec...
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ftdoajarticles:oai:doaj.org/article:59d57855ac584dfda71d5a85954ab7cd 2023-05-15T17:52:40+02:00 ATMOSPHERIC PARAMETERS OVER THE MARGINAL ICE ZONE RETREIVAL FROM ANSR/AMSR-E DATA Maia L. Mitnik Leonid M. Mitnik 2004-01-01T00:00:00Z https://doaj.org/article/59d57855ac584dfda71d5a85954ab7cd EN ES eng spa Universidad de Concepción http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300015 https://doaj.org/toc/0717-652X https://doaj.org/toc/0717-6538 0717-652X 0717-6538 https://doaj.org/article/59d57855ac584dfda71d5a85954ab7cd Gayana, Vol 68, Iss 2, Pp 396-401 (2004) Oceanography GC1-1581 Zoology QL1-991 article 2004 ftdoajarticles 2022-12-31T12:47:32Z A direct radiative transfer model, 478 radiosondes complimented by the cloud liquid water content profiles and the underlying surface temperatures and emissivities were used to simulate the brightness temperatures T Bs over the Marginal Ice Zone at ADEOS-II AMSR and Aqua AMSR-E frequencies. The precipitable water V varied from 0.63 to 18.5kg/m², the total cloud liquid water content Q<=0.25kg/m² and SST£1°C. The mean experimental values of emissivity and its fluctuations for several types of the first-year ice at ice temperature of 263 to 271K were used in a model. The sea surface emissivity was computed taking into account wind action. 10 values of ice concentration C uniformly distributed from 0.0 to 1.0 were selected for each radiosonde. The radiometer noises of 0.5K were added to the modeled T Bs. Standard regression techniques were applied to retrieve V, Q and C from the simulated T Bs with vertical and horizontal polarization at 18.7, 23.8 and 36.5GHz. The retrieval errors increase from »0.5 to »1.7kg/m² for V and from »0.02 to »0.06 kg/m² for Q with the increase of C from 0.0-0.3 to 0.7-1.0. The algorithms were used to retrieve V, Q and C in the Okhotsk Sea from the T Bs measured by AMSR-E Article in Journal/Newspaper okhotsk sea Directory of Open Access Journals: DOAJ Articles Okhotsk |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish |
topic |
Oceanography GC1-1581 Zoology QL1-991 |
spellingShingle |
Oceanography GC1-1581 Zoology QL1-991 Maia L. Mitnik Leonid M. Mitnik ATMOSPHERIC PARAMETERS OVER THE MARGINAL ICE ZONE RETREIVAL FROM ANSR/AMSR-E DATA |
topic_facet |
Oceanography GC1-1581 Zoology QL1-991 |
description |
A direct radiative transfer model, 478 radiosondes complimented by the cloud liquid water content profiles and the underlying surface temperatures and emissivities were used to simulate the brightness temperatures T Bs over the Marginal Ice Zone at ADEOS-II AMSR and Aqua AMSR-E frequencies. The precipitable water V varied from 0.63 to 18.5kg/m², the total cloud liquid water content Q<=0.25kg/m² and SST£1°C. The mean experimental values of emissivity and its fluctuations for several types of the first-year ice at ice temperature of 263 to 271K were used in a model. The sea surface emissivity was computed taking into account wind action. 10 values of ice concentration C uniformly distributed from 0.0 to 1.0 were selected for each radiosonde. The radiometer noises of 0.5K were added to the modeled T Bs. Standard regression techniques were applied to retrieve V, Q and C from the simulated T Bs with vertical and horizontal polarization at 18.7, 23.8 and 36.5GHz. The retrieval errors increase from »0.5 to »1.7kg/m² for V and from »0.02 to »0.06 kg/m² for Q with the increase of C from 0.0-0.3 to 0.7-1.0. The algorithms were used to retrieve V, Q and C in the Okhotsk Sea from the T Bs measured by AMSR-E |
format |
Article in Journal/Newspaper |
author |
Maia L. Mitnik Leonid M. Mitnik |
author_facet |
Maia L. Mitnik Leonid M. Mitnik |
author_sort |
Maia L. Mitnik |
title |
ATMOSPHERIC PARAMETERS OVER THE MARGINAL ICE ZONE RETREIVAL FROM ANSR/AMSR-E DATA |
title_short |
ATMOSPHERIC PARAMETERS OVER THE MARGINAL ICE ZONE RETREIVAL FROM ANSR/AMSR-E DATA |
title_full |
ATMOSPHERIC PARAMETERS OVER THE MARGINAL ICE ZONE RETREIVAL FROM ANSR/AMSR-E DATA |
title_fullStr |
ATMOSPHERIC PARAMETERS OVER THE MARGINAL ICE ZONE RETREIVAL FROM ANSR/AMSR-E DATA |
title_full_unstemmed |
ATMOSPHERIC PARAMETERS OVER THE MARGINAL ICE ZONE RETREIVAL FROM ANSR/AMSR-E DATA |
title_sort |
atmospheric parameters over the marginal ice zone retreival from ansr/amsr-e data |
publisher |
Universidad de Concepción |
publishDate |
2004 |
url |
https://doaj.org/article/59d57855ac584dfda71d5a85954ab7cd |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
okhotsk sea |
genre_facet |
okhotsk sea |
op_source |
Gayana, Vol 68, Iss 2, Pp 396-401 (2004) |
op_relation |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300015 https://doaj.org/toc/0717-652X https://doaj.org/toc/0717-6538 0717-652X 0717-6538 https://doaj.org/article/59d57855ac584dfda71d5a85954ab7cd |
_version_ |
1766160374387703808 |