“Climate response functions” for the Arctic Ocean: a proposed coordinated modelling experiment

A coordinated set of Arctic modelling experiments, which explore how the Arctic responds to changes in external forcing, is proposed. Our goal is to compute and compare <q>climate response functions</q> (CRFs) – the transient response of key observable indicators such as sea-ice extent,...

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Published in:Geoscientific Model Development
Main Authors: Marshall, John, Scott, Jeffery, Proshutinsky, Andrey
Format: Text
Language:English
Published: 2018
Subjects:
Online Access:https://doi.org/10.5194/gmd-10-2833-2017
https://gmd.copernicus.org/articles/10/2833/2017/
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spelling ftcopernicus:oai:publications.copernicus.org:gmd56572 2023-05-15T14:29:13+02:00 “Climate response functions” for the Arctic Ocean: a proposed coordinated modelling experiment Marshall, John Scott, Jeffery Proshutinsky, Andrey 2018-09-27 application/pdf https://doi.org/10.5194/gmd-10-2833-2017 https://gmd.copernicus.org/articles/10/2833/2017/ eng eng doi:10.5194/gmd-10-2833-2017 https://gmd.copernicus.org/articles/10/2833/2017/ eISSN: 1991-9603 Text 2018 ftcopernicus https://doi.org/10.5194/gmd-10-2833-2017 2020-07-20T16:23:40Z A coordinated set of Arctic modelling experiments, which explore how the Arctic responds to changes in external forcing, is proposed. Our goal is to compute and compare <q>climate response functions</q> (CRFs) – the transient response of key observable indicators such as sea-ice extent, freshwater content of the Beaufort Gyre, etc. – to abrupt <q>step</q> changes in forcing fields across a number of Arctic models. Changes in wind, freshwater sources, and inflows to the Arctic basin are considered. Convolutions of known or postulated time series of these forcing fields with their respective CRFs then yield the (linear) response of these observables. This allows the project to inform, and interface directly with, Arctic observations and observers and the climate change community. Here we outline the rationale behind such experiments and illustrate our approach in the context of a coarse-resolution model of the Arctic based on the MITgcm. We conclude by summarizing the expected benefits of such an activity and encourage other modelling groups to compute CRFs with their own models so that we might begin to document their robustness to model formulation, resolution, and parameterization. Text Arctic Basin Arctic Arctic Ocean Climate change Sea ice Copernicus Publications: E-Journals Arctic Arctic Ocean Geoscientific Model Development 10 7 2833 2848
institution Open Polar
collection Copernicus Publications: E-Journals
op_collection_id ftcopernicus
language English
description A coordinated set of Arctic modelling experiments, which explore how the Arctic responds to changes in external forcing, is proposed. Our goal is to compute and compare <q>climate response functions</q> (CRFs) – the transient response of key observable indicators such as sea-ice extent, freshwater content of the Beaufort Gyre, etc. – to abrupt <q>step</q> changes in forcing fields across a number of Arctic models. Changes in wind, freshwater sources, and inflows to the Arctic basin are considered. Convolutions of known or postulated time series of these forcing fields with their respective CRFs then yield the (linear) response of these observables. This allows the project to inform, and interface directly with, Arctic observations and observers and the climate change community. Here we outline the rationale behind such experiments and illustrate our approach in the context of a coarse-resolution model of the Arctic based on the MITgcm. We conclude by summarizing the expected benefits of such an activity and encourage other modelling groups to compute CRFs with their own models so that we might begin to document their robustness to model formulation, resolution, and parameterization.
format Text
author Marshall, John
Scott, Jeffery
Proshutinsky, Andrey
spellingShingle Marshall, John
Scott, Jeffery
Proshutinsky, Andrey
“Climate response functions” for the Arctic Ocean: a proposed coordinated modelling experiment
author_facet Marshall, John
Scott, Jeffery
Proshutinsky, Andrey
author_sort Marshall, John
title “Climate response functions” for the Arctic Ocean: a proposed coordinated modelling experiment
title_short “Climate response functions” for the Arctic Ocean: a proposed coordinated modelling experiment
title_full “Climate response functions” for the Arctic Ocean: a proposed coordinated modelling experiment
title_fullStr “Climate response functions” for the Arctic Ocean: a proposed coordinated modelling experiment
title_full_unstemmed “Climate response functions” for the Arctic Ocean: a proposed coordinated modelling experiment
title_sort “climate response functions” for the arctic ocean: a proposed coordinated modelling experiment
publishDate 2018
url https://doi.org/10.5194/gmd-10-2833-2017
https://gmd.copernicus.org/articles/10/2833/2017/
geographic Arctic
Arctic Ocean
geographic_facet Arctic
Arctic Ocean
genre Arctic Basin
Arctic
Arctic Ocean
Climate change
Sea ice
genre_facet Arctic Basin
Arctic
Arctic Ocean
Climate change
Sea ice
op_source eISSN: 1991-9603
op_relation doi:10.5194/gmd-10-2833-2017
https://gmd.copernicus.org/articles/10/2833/2017/
op_doi https://doi.org/10.5194/gmd-10-2833-2017
container_title Geoscientific Model Development
container_volume 10
container_issue 7
container_start_page 2833
op_container_end_page 2848
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