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Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study

Direct measurement of precipitation in the Antarctic using ground-based instruments is important to validate the results from climate models, reanalyses and satellite observations. Quantifying precipitation in Antarctica faces many unique challenges such as wind and other technical difficulties due...

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Main Authors:	Tang, Malcolm Siong Yii, Chenoli, Sheeba Nettukandy, Colwell, Steve, Grant, Rosey, Simms, Mairi, Law, John, Samah, Azizan Abu
Format:	Article
Published:	Norsk Polarinstitutt 2018
Subjects:	G Geography. Anthropology. Recreation Q Science (General)
Online Access:	http://eprints.um.edu.my/20511/ https://doi.org/10.1080/17518369.2018.1503906
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id	my.um.eprints.20511
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spelling	my.um.eprints.205112019-02-27T01:12:37Z http://eprints.um.edu.my/20511/ Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study Tang, Malcolm Siong Yii Chenoli, Sheeba Nettukandy Colwell, Steve Grant, Rosey Simms, Mairi Law, John Samah, Azizan Abu G Geography. Anthropology. Recreation Q Science (General) Direct measurement of precipitation in the Antarctic using ground-based instruments is important to validate the results from climate models, reanalyses and satellite observations. Quantifying precipitation in Antarctica faces many unique challenges such as wind and other technical difficulties due to the harsh environment. This study compares a variety of precipitation measurements in Antarctica, including satellite data and reanalysis fields atRothera Station, Antarctica Peninsula. The tipping bucket gauges (TBGs) were less sensitive than laser-based sensors (LBSs). The most sensitive LBS (Visibility and Present Weather Sensor, VPF-730) registered 276 precipitation days, while the most sensitive TBG (Universal Precipitation Gauge, UPG-1000) detected 152 precipitation days. Case studies of the precipitation and seasonal accumulation results show the VPF-730 to be the most reliable precipitation sensor of the evaluated instruments. The precipitation amounts given by the reanalyses were positively correlated with wind speed. The precipitation from the Japanese 55-year Reanalysis was most affected by wind speed. Case studies also show that during low wind periods, precipitation measurements from the instruments were very close to the precipitation measurement given by the Global Precipitation Climatology Project (GPCP) 1-degree-daily (1DD) data. During strong wind events, the GPCP 1DD did not fully capture the effect of wind, accounting for the relatively small precipitation amount. The Laser Precipitation Monitor (LPM) and Campbell Scientific-700 (CS700H) experienced instrumental errors during the study, which caused the precipitation readings to become exceedingly high and low, respectively. Installing multiple LBSs in different locations (in close proximity) can help identify inconsistency in the readings. Norsk Polarinstitutt 2018 Article PeerReviewed Tang, Malcolm Siong Yii and Chenoli, Sheeba Nettukandy and Colwell, Steve and Grant, Rosey and Simms, Mairi and Law, John and Samah, Azizan Abu (2018) Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study. Polar Research, 37 (1). p. 1503906. ISSN 0800-0395 https://doi.org/10.1080/17518369.2018.1503906 doi:10.1080/17518369.2018.1503906
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	G Geography. Anthropology. Recreation Q Science (General)
spellingShingle	G Geography. Anthropology. Recreation Q Science (General) Tang, Malcolm Siong Yii Chenoli, Sheeba Nettukandy Colwell, Steve Grant, Rosey Simms, Mairi Law, John Samah, Azizan Abu Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study
description	Direct measurement of precipitation in the Antarctic using ground-based instruments is important to validate the results from climate models, reanalyses and satellite observations. Quantifying precipitation in Antarctica faces many unique challenges such as wind and other technical difficulties due to the harsh environment. This study compares a variety of precipitation measurements in Antarctica, including satellite data and reanalysis fields atRothera Station, Antarctica Peninsula. The tipping bucket gauges (TBGs) were less sensitive than laser-based sensors (LBSs). The most sensitive LBS (Visibility and Present Weather Sensor, VPF-730) registered 276 precipitation days, while the most sensitive TBG (Universal Precipitation Gauge, UPG-1000) detected 152 precipitation days. Case studies of the precipitation and seasonal accumulation results show the VPF-730 to be the most reliable precipitation sensor of the evaluated instruments. The precipitation amounts given by the reanalyses were positively correlated with wind speed. The precipitation from the Japanese 55-year Reanalysis was most affected by wind speed. Case studies also show that during low wind periods, precipitation measurements from the instruments were very close to the precipitation measurement given by the Global Precipitation Climatology Project (GPCP) 1-degree-daily (1DD) data. During strong wind events, the GPCP 1DD did not fully capture the effect of wind, accounting for the relatively small precipitation amount. The Laser Precipitation Monitor (LPM) and Campbell Scientific-700 (CS700H) experienced instrumental errors during the study, which caused the precipitation readings to become exceedingly high and low, respectively. Installing multiple LBSs in different locations (in close proximity) can help identify inconsistency in the readings.
format	Article
author	Tang, Malcolm Siong Yii Chenoli, Sheeba Nettukandy Colwell, Steve Grant, Rosey Simms, Mairi Law, John Samah, Azizan Abu
author_facet	Tang, Malcolm Siong Yii Chenoli, Sheeba Nettukandy Colwell, Steve Grant, Rosey Simms, Mairi Law, John Samah, Azizan Abu
author_sort	Tang, Malcolm Siong Yii
title	Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study
title_short	Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study
title_full	Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study
title_fullStr	Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study
title_full_unstemmed	Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study
title_sort	precipitation instruments at rothera station, antarctic peninsula: a comparative study
publisher	Norsk Polarinstitutt
publishDate	2018
url	http://eprints.um.edu.my/20511/ https://doi.org/10.1080/17518369.2018.1503906
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score	13.211869

Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study

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