Characterization of Water Vapor and Clouds During the Next-Generation Aircraft Remote Sensing for Validation (NARVAL) South Studies
Shallow trade wind clouds pose one of the largest uncertainties in climate models. Due to the difficulties in assessing these clouds with routine observations the next-generation aircraft remote-sensing for validation campaign with the German High Altitude and LOng range research aircraft (HALO) too...
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ftdoajarticles:oai:doaj.org/article:0f8b7d5f75aa4c419c7d5821c9de780e 2023-05-15T18:50:48+02:00 Characterization of Water Vapor and Clouds During the Next-Generation Aircraft Remote Sensing for Validation (NARVAL) South Studies Sabrina Schnitt Emiliano Orlandi Mario Mech Andre Ehrlich Susanne Crewell 2017-01-01T00:00:00Z https://doi.org/10.1109/JSTARS.2017.2687943 https://doaj.org/article/0f8b7d5f75aa4c419c7d5821c9de780e EN eng IEEE https://ieeexplore.ieee.org/document/7937811/ https://doaj.org/toc/2151-1535 2151-1535 doi:10.1109/JSTARS.2017.2687943 https://doaj.org/article/0f8b7d5f75aa4c419c7d5821c9de780e IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 10, Iss 7, Pp 3114-3124 (2017) Airborne active and passive microwaves cloud remote sensing satellite Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809 article 2017 ftdoajarticles https://doi.org/10.1109/JSTARS.2017.2687943 2022-12-31T05:30:07Z Shallow trade wind clouds pose one of the largest uncertainties in climate models. Due to the difficulties in assessing these clouds with routine observations the next-generation aircraft remote-sensing for validation campaign with the German High Altitude and LOng range research aircraft (HALO) took place in December 2013. Here we take advantage of the synergy of the HALO active and passive microwave package as well as spectrally resolved solar radiation (SR) measured by HALO-SR to characterize shallow clouds in the Caribbean. Based on a cloud mask developed from HALO-SR, about 12 000 cloudy profiles within ~4100 individual clouds could be detected with about 70 % of them having a length of less than 2 km. Corresponding measurements with passive microwave measurements reveal that these small clouds also contain little water with 36% of the clouds showing a liquid water path (LWP) of less than 50g · m -2 . We show that these small and thin clouds are difficult to characterize with satellite observations by the special sensor microwave imager/sounder due to its coarse resolution. Moderate imaging spectroradiometer measurements are able to identify the smaller clouds but suffer in terms of LWP when clouds start precipitating, which is the case for about 7% of the clouds as detected by the airborne 35 GHz radar. Article in Journal/Newspaper narval narval Directory of Open Access Journals: DOAJ Articles IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 10 7 3114 3124 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Airborne active and passive microwaves cloud remote sensing satellite Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Airborne active and passive microwaves cloud remote sensing satellite Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809 Sabrina Schnitt Emiliano Orlandi Mario Mech Andre Ehrlich Susanne Crewell Characterization of Water Vapor and Clouds During the Next-Generation Aircraft Remote Sensing for Validation (NARVAL) South Studies |
topic_facet |
Airborne active and passive microwaves cloud remote sensing satellite Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809 |
description |
Shallow trade wind clouds pose one of the largest uncertainties in climate models. Due to the difficulties in assessing these clouds with routine observations the next-generation aircraft remote-sensing for validation campaign with the German High Altitude and LOng range research aircraft (HALO) took place in December 2013. Here we take advantage of the synergy of the HALO active and passive microwave package as well as spectrally resolved solar radiation (SR) measured by HALO-SR to characterize shallow clouds in the Caribbean. Based on a cloud mask developed from HALO-SR, about 12 000 cloudy profiles within ~4100 individual clouds could be detected with about 70 % of them having a length of less than 2 km. Corresponding measurements with passive microwave measurements reveal that these small clouds also contain little water with 36% of the clouds showing a liquid water path (LWP) of less than 50g · m -2 . We show that these small and thin clouds are difficult to characterize with satellite observations by the special sensor microwave imager/sounder due to its coarse resolution. Moderate imaging spectroradiometer measurements are able to identify the smaller clouds but suffer in terms of LWP when clouds start precipitating, which is the case for about 7% of the clouds as detected by the airborne 35 GHz radar. |
format |
Article in Journal/Newspaper |
author |
Sabrina Schnitt Emiliano Orlandi Mario Mech Andre Ehrlich Susanne Crewell |
author_facet |
Sabrina Schnitt Emiliano Orlandi Mario Mech Andre Ehrlich Susanne Crewell |
author_sort |
Sabrina Schnitt |
title |
Characterization of Water Vapor and Clouds During the Next-Generation Aircraft Remote Sensing for Validation (NARVAL) South Studies |
title_short |
Characterization of Water Vapor and Clouds During the Next-Generation Aircraft Remote Sensing for Validation (NARVAL) South Studies |
title_full |
Characterization of Water Vapor and Clouds During the Next-Generation Aircraft Remote Sensing for Validation (NARVAL) South Studies |
title_fullStr |
Characterization of Water Vapor and Clouds During the Next-Generation Aircraft Remote Sensing for Validation (NARVAL) South Studies |
title_full_unstemmed |
Characterization of Water Vapor and Clouds During the Next-Generation Aircraft Remote Sensing for Validation (NARVAL) South Studies |
title_sort |
characterization of water vapor and clouds during the next-generation aircraft remote sensing for validation (narval) south studies |
publisher |
IEEE |
publishDate |
2017 |
url |
https://doi.org/10.1109/JSTARS.2017.2687943 https://doaj.org/article/0f8b7d5f75aa4c419c7d5821c9de780e |
genre |
narval narval |
genre_facet |
narval narval |
op_source |
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 10, Iss 7, Pp 3114-3124 (2017) |
op_relation |
https://ieeexplore.ieee.org/document/7937811/ https://doaj.org/toc/2151-1535 2151-1535 doi:10.1109/JSTARS.2017.2687943 https://doaj.org/article/0f8b7d5f75aa4c419c7d5821c9de780e |
op_doi |
https://doi.org/10.1109/JSTARS.2017.2687943 |
container_title |
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
container_volume |
10 |
container_issue |
7 |
container_start_page |
3114 |
op_container_end_page |
3124 |
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1766244549402820608 |