Impact of precipitation intermittency on NAO-temperature signals in proxy records

In mid and high latitudes, the stable isotope ratio in precipitation is driven by changes in temperature, which control atmospheric distillation. This relationship forms the basis for many continental paleoclimatic reconstructions using direct (e.g. ice cores) or indirect (e.g. tree ring cellulose,...

Full description

Bibliographic Details
Published in:Climate of the Past
Main Authors: Casado, M., Ortega, P., Masson-Delmotte, V., Risi, C., Swingedouw, D., Daux, V., Genty, D., Maignan, F., Solomina, O., Vinther, B., Viovy, N., Yiou, P.
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2013
Subjects:
Online Access:https://doi.org/10.5194/cp-9-871-2013
https://noa.gwlb.de/receive/cop_mods_00023075
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023030/cp-9-871-2013.pdf
https://cp.copernicus.org/articles/9/871/2013/cp-9-871-2013.pdf
id ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00023075
record_format openpolar
spelling ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00023075 2023-05-15T16:03:53+02:00 Impact of precipitation intermittency on NAO-temperature signals in proxy records Casado, M. Ortega, P. Masson-Delmotte, V. Risi, C. Swingedouw, D. Daux, V. Genty, D. Maignan, F. Solomina, O. Vinther, B. Viovy, N. Yiou, P. 2013-03 electronic https://doi.org/10.5194/cp-9-871-2013 https://noa.gwlb.de/receive/cop_mods_00023075 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023030/cp-9-871-2013.pdf https://cp.copernicus.org/articles/9/871/2013/cp-9-871-2013.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-9-871-2013 https://noa.gwlb.de/receive/cop_mods_00023075 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023030/cp-9-871-2013.pdf https://cp.copernicus.org/articles/9/871/2013/cp-9-871-2013.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2013 ftnonlinearchiv https://doi.org/10.5194/cp-9-871-2013 2022-02-08T22:50:50Z In mid and high latitudes, the stable isotope ratio in precipitation is driven by changes in temperature, which control atmospheric distillation. This relationship forms the basis for many continental paleoclimatic reconstructions using direct (e.g. ice cores) or indirect (e.g. tree ring cellulose, speleothem calcite) archives of past precipitation. However, the archiving process is inherently biased by intermittency of precipitation. Here, we use two sets of atmospheric reanalyses (NCEP (National Centers for Environmental Prediction) and ERA-interim) to quantify this precipitation intermittency bias, by comparing seasonal (winter and summer) temperatures estimated with and without precipitation weighting. We show that this bias reaches up to 10 °C and has large interannual variability. We then assess the impact of precipitation intermittency on the strength and stability of temporal correlations between seasonal temperatures and the North Atlantic Oscillation (NAO). Precipitation weighting reduces the correlation between winter NAO and temperature in some areas (e.g. Québec, South-East USA, East Greenland, East Siberia, Mediterranean sector) but does not alter the main patterns of correlation. The correlations between NAO, δ18O in precipitation, temperature and precipitation weighted temperature are investigated using outputs of an atmospheric general circulation model enabled with stable isotopes and nudged using reanalyses (LMDZiso (Laboratoire de Météorologie Dynamique Zoom)). In winter, LMDZiso shows similar correlation values between the NAO and both the precipitation weighted temperature and δ18O in precipitation, thus suggesting limited impacts of moisture origin. Correlations of comparable magnitude are obtained for the available observational evidence (GNIP (Global Network of Isotopes in Precipitation) and Greenland ice core data). Our findings support the use of archives of past δ18O for NAO reconstructions. Article in Journal/Newspaper East Greenland Greenland Greenland ice core ice core North Atlantic North Atlantic oscillation Siberia Niedersächsisches Online-Archiv NOA Greenland Climate of the Past 9 2 871 886
institution Open Polar
collection Niedersächsisches Online-Archiv NOA
op_collection_id ftnonlinearchiv
language English
topic article
Verlagsveröffentlichung
spellingShingle article
Verlagsveröffentlichung
Casado, M.
Ortega, P.
Masson-Delmotte, V.
Risi, C.
Swingedouw, D.
Daux, V.
Genty, D.
Maignan, F.
Solomina, O.
Vinther, B.
Viovy, N.
Yiou, P.
Impact of precipitation intermittency on NAO-temperature signals in proxy records
topic_facet article
Verlagsveröffentlichung
description In mid and high latitudes, the stable isotope ratio in precipitation is driven by changes in temperature, which control atmospheric distillation. This relationship forms the basis for many continental paleoclimatic reconstructions using direct (e.g. ice cores) or indirect (e.g. tree ring cellulose, speleothem calcite) archives of past precipitation. However, the archiving process is inherently biased by intermittency of precipitation. Here, we use two sets of atmospheric reanalyses (NCEP (National Centers for Environmental Prediction) and ERA-interim) to quantify this precipitation intermittency bias, by comparing seasonal (winter and summer) temperatures estimated with and without precipitation weighting. We show that this bias reaches up to 10 °C and has large interannual variability. We then assess the impact of precipitation intermittency on the strength and stability of temporal correlations between seasonal temperatures and the North Atlantic Oscillation (NAO). Precipitation weighting reduces the correlation between winter NAO and temperature in some areas (e.g. Québec, South-East USA, East Greenland, East Siberia, Mediterranean sector) but does not alter the main patterns of correlation. The correlations between NAO, δ18O in precipitation, temperature and precipitation weighted temperature are investigated using outputs of an atmospheric general circulation model enabled with stable isotopes and nudged using reanalyses (LMDZiso (Laboratoire de Météorologie Dynamique Zoom)). In winter, LMDZiso shows similar correlation values between the NAO and both the precipitation weighted temperature and δ18O in precipitation, thus suggesting limited impacts of moisture origin. Correlations of comparable magnitude are obtained for the available observational evidence (GNIP (Global Network of Isotopes in Precipitation) and Greenland ice core data). Our findings support the use of archives of past δ18O for NAO reconstructions.
format Article in Journal/Newspaper
author Casado, M.
Ortega, P.
Masson-Delmotte, V.
Risi, C.
Swingedouw, D.
Daux, V.
Genty, D.
Maignan, F.
Solomina, O.
Vinther, B.
Viovy, N.
Yiou, P.
author_facet Casado, M.
Ortega, P.
Masson-Delmotte, V.
Risi, C.
Swingedouw, D.
Daux, V.
Genty, D.
Maignan, F.
Solomina, O.
Vinther, B.
Viovy, N.
Yiou, P.
author_sort Casado, M.
title Impact of precipitation intermittency on NAO-temperature signals in proxy records
title_short Impact of precipitation intermittency on NAO-temperature signals in proxy records
title_full Impact of precipitation intermittency on NAO-temperature signals in proxy records
title_fullStr Impact of precipitation intermittency on NAO-temperature signals in proxy records
title_full_unstemmed Impact of precipitation intermittency on NAO-temperature signals in proxy records
title_sort impact of precipitation intermittency on nao-temperature signals in proxy records
publisher Copernicus Publications
publishDate 2013
url https://doi.org/10.5194/cp-9-871-2013
https://noa.gwlb.de/receive/cop_mods_00023075
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023030/cp-9-871-2013.pdf
https://cp.copernicus.org/articles/9/871/2013/cp-9-871-2013.pdf
geographic Greenland
geographic_facet Greenland
genre East Greenland
Greenland
Greenland ice core
ice core
North Atlantic
North Atlantic oscillation
Siberia
genre_facet East Greenland
Greenland
Greenland ice core
ice core
North Atlantic
North Atlantic oscillation
Siberia
op_relation Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332
https://doi.org/10.5194/cp-9-871-2013
https://noa.gwlb.de/receive/cop_mods_00023075
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023030/cp-9-871-2013.pdf
https://cp.copernicus.org/articles/9/871/2013/cp-9-871-2013.pdf
op_rights uneingeschränkt
info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.5194/cp-9-871-2013
container_title Climate of the Past
container_volume 9
container_issue 2
container_start_page 871
op_container_end_page 886
_version_ 1766399568541384704