FLEXPART validation with the use of CMET balloons
During the campaign in August 2010, five controlled meteorological (CMET) balloons where launched from Ny-Ålesund. Paul B. Voss developed the CMET balloons, and they are adapted to operate in the Arctic environment. They are known for their light weigh (approximately ½ kg) and the ability to perform...
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ftoslouniv:oai:www.duo.uio.no:10852/12550 2023-05-15T15:07:46+02:00 FLEXPART validation with the use of CMET balloons Mentzoni, Anniken Celine Lars Robert Hole, Terje Koren Berntsen, Joseph Henry LaCasce 2011 http://hdl.handle.net/10852/12550 http://urn.nb.no/URN:NBN:no-28883 eng eng http://urn.nb.no/URN:NBN:no-28883 Mentzoni, Anniken Celine. FLEXPART validation with the use of CMET balloons. Masteroppgave, University of Oslo, 2011 http://hdl.handle.net/10852/12550 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.au=Mentzoni, Anniken Celine&rft.title=FLEXPART validation with the use of CMET balloons&rft.inst=University of Oslo&rft.date=2011&rft.degree=Masteroppgave URN:NBN:no-28883 129316 121216810 Fulltext https://www.duo.uio.no/bitstream/handle/10852/12550/2/thesis_Mentzoni.pdf VDP::450 Master thesis Masteroppgave 2011 ftoslouniv 2020-06-21T08:42:09Z During the campaign in August 2010, five controlled meteorological (CMET) balloons where launched from Ny-Ålesund. Paul B. Voss developed the CMET balloons, and they are adapted to operate in the Arctic environment. They are known for their light weigh (approximately ½ kg) and the ability to perform repeated vertical soundings. Data from four of the balloons were used. The flight duration ranged between approximately 24 hours to over 3 days, and 9 soundings were performed. The balloon data were compared with the Lagrangian particle dispersion and trajectory model, FLEXPART. FLEXPART is developed by Andreas Stohl. The study shows that the wind speed used by FLEXPART is generally too high and that the relative humidity spanned by the model is generally too narrow. These errors might be originating from the ECMWF data. The potential temperature, on the other hand, is mostly really good. How close resemblance the calculated trajectories from FLEXPART have with the balloons depends on the stability to the modeled air. More sinking air leads to bigger trajectory errors. The calculated average relative horizontal transport deviation (RHTD) for the first 16 hours is constant around 28 %, which are a few percentage points greater than in earlier studies (e.g. Riddle et al. (2006)). This would probably have been more reliable if the ensemble of the trajectories were greater. Master Thesis Arctic Ny Ålesund Ny-Ålesund Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Andreas ENVELOPE(-60.729,-60.729,-64.008,-64.008) Arctic Ny-Ålesund |
institution |
Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
topic |
VDP::450 |
spellingShingle |
VDP::450 Mentzoni, Anniken Celine FLEXPART validation with the use of CMET balloons |
topic_facet |
VDP::450 |
description |
During the campaign in August 2010, five controlled meteorological (CMET) balloons where launched from Ny-Ålesund. Paul B. Voss developed the CMET balloons, and they are adapted to operate in the Arctic environment. They are known for their light weigh (approximately ½ kg) and the ability to perform repeated vertical soundings. Data from four of the balloons were used. The flight duration ranged between approximately 24 hours to over 3 days, and 9 soundings were performed. The balloon data were compared with the Lagrangian particle dispersion and trajectory model, FLEXPART. FLEXPART is developed by Andreas Stohl. The study shows that the wind speed used by FLEXPART is generally too high and that the relative humidity spanned by the model is generally too narrow. These errors might be originating from the ECMWF data. The potential temperature, on the other hand, is mostly really good. How close resemblance the calculated trajectories from FLEXPART have with the balloons depends on the stability to the modeled air. More sinking air leads to bigger trajectory errors. The calculated average relative horizontal transport deviation (RHTD) for the first 16 hours is constant around 28 %, which are a few percentage points greater than in earlier studies (e.g. Riddle et al. (2006)). This would probably have been more reliable if the ensemble of the trajectories were greater. |
author2 |
Lars Robert Hole, Terje Koren Berntsen, Joseph Henry LaCasce |
format |
Master Thesis |
author |
Mentzoni, Anniken Celine |
author_facet |
Mentzoni, Anniken Celine |
author_sort |
Mentzoni, Anniken Celine |
title |
FLEXPART validation with the use of CMET balloons |
title_short |
FLEXPART validation with the use of CMET balloons |
title_full |
FLEXPART validation with the use of CMET balloons |
title_fullStr |
FLEXPART validation with the use of CMET balloons |
title_full_unstemmed |
FLEXPART validation with the use of CMET balloons |
title_sort |
flexpart validation with the use of cmet balloons |
publishDate |
2011 |
url |
http://hdl.handle.net/10852/12550 http://urn.nb.no/URN:NBN:no-28883 |
long_lat |
ENVELOPE(-60.729,-60.729,-64.008,-64.008) |
geographic |
Andreas Arctic Ny-Ålesund |
geographic_facet |
Andreas Arctic Ny-Ålesund |
genre |
Arctic Ny Ålesund Ny-Ålesund |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund |
op_relation |
http://urn.nb.no/URN:NBN:no-28883 Mentzoni, Anniken Celine. FLEXPART validation with the use of CMET balloons. Masteroppgave, University of Oslo, 2011 http://hdl.handle.net/10852/12550 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.au=Mentzoni, Anniken Celine&rft.title=FLEXPART validation with the use of CMET balloons&rft.inst=University of Oslo&rft.date=2011&rft.degree=Masteroppgave URN:NBN:no-28883 129316 121216810 Fulltext https://www.duo.uio.no/bitstream/handle/10852/12550/2/thesis_Mentzoni.pdf |
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1766339200071761920 |