Climate From the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface Air Temperature Trends and Redefined Summer Season
The weather of the McMurdo Dry Valleys, Antarctica, the largest ice‐free region of the Antarctica, has been continuously monitored since 1985 with currently 14 operational meteorological stations distributed throughout the valleys. Because climate is based on a 30‐year record of weather, this is the...
Main Authors: | , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
PDXScholar
2020
|
Subjects: | |
Online Access: | https://pdxscholar.library.pdx.edu/geology_fac/181 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1183&context=geology_fac |
id |
ftportlandstate:oai:pdxscholar.library.pdx.edu:geology_fac-1183 |
---|---|
record_format |
openpolar |
spelling |
ftportlandstate:oai:pdxscholar.library.pdx.edu:geology_fac-1183 2023-05-15T13:52:19+02:00 Climate From the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface Air Temperature Trends and Redefined Summer Season Obryk, Maciej K. Doran, Peter T. Fountain, Andrew G. Myers, M. McKay, Christopher P. 2020-05-01T07:00:00Z application/pdf https://pdxscholar.library.pdx.edu/geology_fac/181 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1183&context=geology_fac unknown PDXScholar https://pdxscholar.library.pdx.edu/geology_fac/181 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1183&context=geology_fac Geology Faculty Publications and Presentations Climate -- Antarctica -- McMurdo Dry Valleys Geophysics -- Research -- Antarctica Meteorology -- Antarctica -- Observations -- 1986-2017 Atmospheric Sciences Geology Glaciology text 2020 ftportlandstate 2022-01-09T19:58:34Z The weather of the McMurdo Dry Valleys, Antarctica, the largest ice‐free region of the Antarctica, has been continuously monitored since 1985 with currently 14 operational meteorological stations distributed throughout the valleys. Because climate is based on a 30‐year record of weather, this is the first study to truly define the contemporary climate of the McMurdo Dry Valleys. Mean air temperature and solar radiation based on all stations were −20°C and 102 Wm−2, respectively. Depending on the site location, the mean annual air temperatures on the valleys floors ranged between −15°C and −30°C, and mean annual solar radiation varied between 72 and 122 Wm−2. Surface air temperature decreased by 0.7°C per decade from 1986 to 2006 at Lake Hoare station (longest continuous record), after which the record is highly variable with no trend. All stations with sufficiently long records showed similar trend shifts in 2005 ±1 year. Summer is defined as November through February, using a physically based process: up‐valley warming from the coast associated with a change in atmospheric stability. Text Antarc* Antarctica McMurdo Dry Valleys Portland State University: PDXScholar Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) Lake Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) McMurdo Dry Valleys |
institution |
Open Polar |
collection |
Portland State University: PDXScholar |
op_collection_id |
ftportlandstate |
language |
unknown |
topic |
Climate -- Antarctica -- McMurdo Dry Valleys Geophysics -- Research -- Antarctica Meteorology -- Antarctica -- Observations -- 1986-2017 Atmospheric Sciences Geology Glaciology |
spellingShingle |
Climate -- Antarctica -- McMurdo Dry Valleys Geophysics -- Research -- Antarctica Meteorology -- Antarctica -- Observations -- 1986-2017 Atmospheric Sciences Geology Glaciology Obryk, Maciej K. Doran, Peter T. Fountain, Andrew G. Myers, M. McKay, Christopher P. Climate From the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface Air Temperature Trends and Redefined Summer Season |
topic_facet |
Climate -- Antarctica -- McMurdo Dry Valleys Geophysics -- Research -- Antarctica Meteorology -- Antarctica -- Observations -- 1986-2017 Atmospheric Sciences Geology Glaciology |
description |
The weather of the McMurdo Dry Valleys, Antarctica, the largest ice‐free region of the Antarctica, has been continuously monitored since 1985 with currently 14 operational meteorological stations distributed throughout the valleys. Because climate is based on a 30‐year record of weather, this is the first study to truly define the contemporary climate of the McMurdo Dry Valleys. Mean air temperature and solar radiation based on all stations were −20°C and 102 Wm−2, respectively. Depending on the site location, the mean annual air temperatures on the valleys floors ranged between −15°C and −30°C, and mean annual solar radiation varied between 72 and 122 Wm−2. Surface air temperature decreased by 0.7°C per decade from 1986 to 2006 at Lake Hoare station (longest continuous record), after which the record is highly variable with no trend. All stations with sufficiently long records showed similar trend shifts in 2005 ±1 year. Summer is defined as November through February, using a physically based process: up‐valley warming from the coast associated with a change in atmospheric stability. |
format |
Text |
author |
Obryk, Maciej K. Doran, Peter T. Fountain, Andrew G. Myers, M. McKay, Christopher P. |
author_facet |
Obryk, Maciej K. Doran, Peter T. Fountain, Andrew G. Myers, M. McKay, Christopher P. |
author_sort |
Obryk, Maciej K. |
title |
Climate From the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface Air Temperature Trends and Redefined Summer Season |
title_short |
Climate From the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface Air Temperature Trends and Redefined Summer Season |
title_full |
Climate From the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface Air Temperature Trends and Redefined Summer Season |
title_fullStr |
Climate From the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface Air Temperature Trends and Redefined Summer Season |
title_full_unstemmed |
Climate From the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface Air Temperature Trends and Redefined Summer Season |
title_sort |
climate from the mcmurdo dry valleys, antarctica, 1986–2017: surface air temperature trends and redefined summer season |
publisher |
PDXScholar |
publishDate |
2020 |
url |
https://pdxscholar.library.pdx.edu/geology_fac/181 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1183&context=geology_fac |
long_lat |
ENVELOPE(162.850,162.850,-77.633,-77.633) ENVELOPE(162.850,162.850,-77.633,-77.633) |
geographic |
Hoare Lake Hoare McMurdo Dry Valleys |
geographic_facet |
Hoare Lake Hoare McMurdo Dry Valleys |
genre |
Antarc* Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctica McMurdo Dry Valleys |
op_source |
Geology Faculty Publications and Presentations |
op_relation |
https://pdxscholar.library.pdx.edu/geology_fac/181 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1183&context=geology_fac |
_version_ |
1766256598501556224 |