Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations
Total water vapour (TWV) measurements are rare in Antarctica, and therefore our knowledge about the spatial and temporal TWV variability is limited. Model simulations can help to close this gap and to understand the driving factors (like storm strength and variability). Measurements are available fr...
Main Authors: | , , , , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
2010
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/23162/ https://hdl.handle.net/10013/epic.35939 |
id |
ftawi:oai:epic.awi.de:23162 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:23162 2023-05-15T13:46:50+02:00 Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations Walther, Connie Rinke, Annette Knöfel, Chr. Dietrich, R. Dethloff, Klaus 2010 https://epic.awi.de/id/eprint/23162/ https://hdl.handle.net/10013/epic.35939 unknown Walther, C. , Rinke, A. orcid:0000-0002-6685-9219 , Knöfel, C. , Dietrich, R. and Dethloff, K. (2010) Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations , 24. Internationale Polartagung der DGP, Obergurgl. bis 10. September 2010. . hdl:10013/epic.35939 EPIC324. Internationale Polartagung der DGP, Obergurgl. bis 10. September 2010., 6 Conference notRev 2010 ftawi 2021-12-24T15:34:34Z Total water vapour (TWV) measurements are rare in Antarctica, and therefore our knowledge about the spatial and temporal TWV variability is limited. Model simulations can help to close this gap and to understand the driving factors (like storm strength and variability). Measurements are available from radiosounding and can be derived indirectly from ground based GPS observations.The regional climate model HIRHAM4 is used to get a better insight on the Antarctic climate in the last four decades. This model is driven at its boundaries by ERA40 reanalysis data.A comparison of Antarctic TWV between measurements (radiosounding and GPS), reanalysis data (NCEP, ERA40 and ERA Interim) and HIRHAM4 simulations is presented. Additionally the uncertainties in both measurements and simulations are quantified. On the Antarctic Peninsula the correlation between the different data is high. Contrary for continental stations, HIRHAM tends to be too dry. To explain the differences between the different data sets, the synoptic activity and the wind direction is analyzed. Conference Object Antarc* Antarctic Antarctic Peninsula Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Antarctic Peninsula The Antarctic |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Total water vapour (TWV) measurements are rare in Antarctica, and therefore our knowledge about the spatial and temporal TWV variability is limited. Model simulations can help to close this gap and to understand the driving factors (like storm strength and variability). Measurements are available from radiosounding and can be derived indirectly from ground based GPS observations.The regional climate model HIRHAM4 is used to get a better insight on the Antarctic climate in the last four decades. This model is driven at its boundaries by ERA40 reanalysis data.A comparison of Antarctic TWV between measurements (radiosounding and GPS), reanalysis data (NCEP, ERA40 and ERA Interim) and HIRHAM4 simulations is presented. Additionally the uncertainties in both measurements and simulations are quantified. On the Antarctic Peninsula the correlation between the different data is high. Contrary for continental stations, HIRHAM tends to be too dry. To explain the differences between the different data sets, the synoptic activity and the wind direction is analyzed. |
format |
Conference Object |
author |
Walther, Connie Rinke, Annette Knöfel, Chr. Dietrich, R. Dethloff, Klaus |
spellingShingle |
Walther, Connie Rinke, Annette Knöfel, Chr. Dietrich, R. Dethloff, Klaus Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations |
author_facet |
Walther, Connie Rinke, Annette Knöfel, Chr. Dietrich, R. Dethloff, Klaus |
author_sort |
Walther, Connie |
title |
Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations |
title_short |
Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations |
title_full |
Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations |
title_fullStr |
Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations |
title_full_unstemmed |
Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations |
title_sort |
comparison of antarctic total water vapour from measurements, reanalyses and regional climate simulations |
publishDate |
2010 |
url |
https://epic.awi.de/id/eprint/23162/ https://hdl.handle.net/10013/epic.35939 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
EPIC324. Internationale Polartagung der DGP, Obergurgl. bis 10. September 2010., 6 |
op_relation |
Walther, C. , Rinke, A. orcid:0000-0002-6685-9219 , Knöfel, C. , Dietrich, R. and Dethloff, K. (2010) Comparison of Antarctic total water vapour from measurements, reanalyses and regional climate simulations , 24. Internationale Polartagung der DGP, Obergurgl. bis 10. September 2010. . hdl:10013/epic.35939 |
_version_ |
1766245313014661120 |