Microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations
This licentiate thesis considers the combination of multiple instruments for remote sensing of the Earth atmosphere from space. The primary focus is on remote sensing of atmospheric ice. Ice clouds are important for the Earth’s radiation budget, but their properties are difficult to measure and ther...
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Luleå tekniska universitet, Rymdteknik
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ftluleatu:oai:DiVA.org:ltu-26000 2023-05-15T17:04:18+02:00 Microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations Holl, Gerrit 2011 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26000 eng eng Luleå tekniska universitet, Rymdteknik Luleå Licentiate thesis / Luleå University of Technology, 1402-1757 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26000 urn:isbn:978-91-7439-374-3 Local c1449cc6-739e-46ca-8399-2838f3e16533 info:eu-repo/semantics/openAccess Aerospace Engineering Rymd- och flygteknik Licentiate thesis, comprehensive summary info:eu-repo/semantics/masterThesis text 2011 ftluleatu 2022-10-25T20:51:28Z This licentiate thesis considers the combination of multiple instruments for remote sensing of the Earth atmosphere from space. The primary focus is on remote sensing of atmospheric ice. Ice clouds are important for the Earth’s radiation budget, but their properties are difficult to measure and therefore poorly known. A better quantification of ice clouds is needed to improve global climate models. This thesis introduces the reader to the subject and describes how to combine measurements and radiative transfer simulations in an attempt to improve our understanding. A major part of this work is the development of a toolkit to find co-incident measurements, or collocations, between any pair of down-looking satellite sensors. Firstly, this toolkit is used to collocate passive microwave and thermal infrared sensors on meteorological satellites with the Cloud Profiling Radar on CloudSat. With the resulting collocated dataset, the Ice Water Path (IWP) signal in passive thermal radiation is studied and an improved IWP retrieval is presented. The toolkit is also used to better characterise the bias between different copies of passive microwave radiometers on-board polar-orbiting operational satellites. For the Atmospheric Radiative Transfer Simulator (ARTS), version 2, an optimised frequency grid for infrared broadband simulations is shown to be applicable for cloudy simulations. This frequency grid can and will be used to study the IWP signal in thermal infrared radiances. An outlook on a comparison between collocations and simulations is presented in the thesis. Godkänd; 2011; 20111129 (gerhol); LICENTIATSEMINARIUM Ämnesområde: Rymdteknik/Space Engineering Examinator: Professor Stefan Buehler, Institutionen för system- och rymdteknik, Luleå tekniska universitet Diskutant: Dr Claudia Emde, Fakultät für Physik, Meteorologisches Institut, Ludwig- Maximilans-Universität, München, Deutschland Tid: Måndag den 16 januari 2012 kl 10.00 Plats: Sal C, Rymdcampus Kiruna, Luleå tekniska universitet Master Thesis Kiruna Luleå Luleå Luleå University of Technology Publications (DiVA) Kiruna |
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Open Polar |
collection |
Luleå University of Technology Publications (DiVA) |
op_collection_id |
ftluleatu |
language |
English |
topic |
Aerospace Engineering Rymd- och flygteknik |
spellingShingle |
Aerospace Engineering Rymd- och flygteknik Holl, Gerrit Microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations |
topic_facet |
Aerospace Engineering Rymd- och flygteknik |
description |
This licentiate thesis considers the combination of multiple instruments for remote sensing of the Earth atmosphere from space. The primary focus is on remote sensing of atmospheric ice. Ice clouds are important for the Earth’s radiation budget, but their properties are difficult to measure and therefore poorly known. A better quantification of ice clouds is needed to improve global climate models. This thesis introduces the reader to the subject and describes how to combine measurements and radiative transfer simulations in an attempt to improve our understanding. A major part of this work is the development of a toolkit to find co-incident measurements, or collocations, between any pair of down-looking satellite sensors. Firstly, this toolkit is used to collocate passive microwave and thermal infrared sensors on meteorological satellites with the Cloud Profiling Radar on CloudSat. With the resulting collocated dataset, the Ice Water Path (IWP) signal in passive thermal radiation is studied and an improved IWP retrieval is presented. The toolkit is also used to better characterise the bias between different copies of passive microwave radiometers on-board polar-orbiting operational satellites. For the Atmospheric Radiative Transfer Simulator (ARTS), version 2, an optimised frequency grid for infrared broadband simulations is shown to be applicable for cloudy simulations. This frequency grid can and will be used to study the IWP signal in thermal infrared radiances. An outlook on a comparison between collocations and simulations is presented in the thesis. Godkänd; 2011; 20111129 (gerhol); LICENTIATSEMINARIUM Ämnesområde: Rymdteknik/Space Engineering Examinator: Professor Stefan Buehler, Institutionen för system- och rymdteknik, Luleå tekniska universitet Diskutant: Dr Claudia Emde, Fakultät für Physik, Meteorologisches Institut, Ludwig- Maximilans-Universität, München, Deutschland Tid: Måndag den 16 januari 2012 kl 10.00 Plats: Sal C, Rymdcampus Kiruna, Luleå tekniska universitet |
format |
Master Thesis |
author |
Holl, Gerrit |
author_facet |
Holl, Gerrit |
author_sort |
Holl, Gerrit |
title |
Microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations |
title_short |
Microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations |
title_full |
Microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations |
title_fullStr |
Microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations |
title_full_unstemmed |
Microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations |
title_sort |
microwave and infrared remote sensing of ice clouds : measurements and radiative transfer simulations |
publisher |
Luleå tekniska universitet, Rymdteknik |
publishDate |
2011 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26000 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna Luleå Luleå |
genre_facet |
Kiruna Luleå Luleå |
op_relation |
Licentiate thesis / Luleå University of Technology, 1402-1757 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26000 urn:isbn:978-91-7439-374-3 Local c1449cc6-739e-46ca-8399-2838f3e16533 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766058373981143040 |