ON THE PAUSED WARMING CONTROVERSY BASED ON IPCC AR5 AND BEYOND

The paused warming since ca. 2002 (maybe, 1998) is not satisfactorily reflected by the IPCC WGI (2013) Report. The aim of the present study is to collect, present and discuss the key arguments of the issue, selected strictly from this valuable Report. Our study tackles three aspects: (i) Symptoms of...

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Main Author: MIKA J.
Format: Article
Language:English
Published: Cluj University Press 2014-03-01
Series:Aerul şi Apa: Componente ale Mediului
Subjects:
Online Access:http://aerapa.conference.ubbcluj.ro/2014/PDF/03-Mika.pdf
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author MIKA J.
author_facet MIKA J.
author_sort MIKA J.
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description The paused warming since ca. 2002 (maybe, 1998) is not satisfactorily reflected by the IPCC WGI (2013) Report. The aim of the present study is to collect, present and discuss the key arguments of the issue, selected strictly from this valuable Report. Our study tackles three aspects: (i) Symptoms of pausing, including atmospheric changes, near-surface oceans, cryosphere and geographical differences. (ii) Possible reasons of the paused warming, including external forcing factors, playing rather minor role, and the enhanced ocean heat uptake. Though missing warming is 0.2 K/decade compared to the model expectations, the whole climate system integrates continuously increasing amount of heat, 95 % of which is locked in the oceans. (iii) Consequences of the pausing for the three main branches of the IPCC activity. For climate science, correct simulation of the enhanced heat uptake is a challenge. Since characteristic time scale of most adaptation measures is 1-2 decades, or shorter, near-term projections may not drive adaptation until climate models become able meet this challenge. On the other hand, pausing warming does not question the need for mitigation, since it is physically unlikely, that oceans can uptake endless amount of heat. Vertical temperature gradients of the upper ocean layers already show stagnation.
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spelling doaj.art-1b7ce4e8d41c4e9f9ffa09535f4b391e2023-12-02T14:30:56ZengCluj University PressAerul şi Apa: Componente ale Mediului2067-743X2067-743X2014-03-0120141623ON THE PAUSED WARMING CONTROVERSY BASED ON IPCC AR5 AND BEYONDMIKA J.0Eszterhazy Karoly College, Faculty of Natural Science, Dep artament of Geography, Eger, HungaryThe paused warming since ca. 2002 (maybe, 1998) is not satisfactorily reflected by the IPCC WGI (2013) Report. The aim of the present study is to collect, present and discuss the key arguments of the issue, selected strictly from this valuable Report. Our study tackles three aspects: (i) Symptoms of pausing, including atmospheric changes, near-surface oceans, cryosphere and geographical differences. (ii) Possible reasons of the paused warming, including external forcing factors, playing rather minor role, and the enhanced ocean heat uptake. Though missing warming is 0.2 K/decade compared to the model expectations, the whole climate system integrates continuously increasing amount of heat, 95 % of which is locked in the oceans. (iii) Consequences of the pausing for the three main branches of the IPCC activity. For climate science, correct simulation of the enhanced heat uptake is a challenge. Since characteristic time scale of most adaptation measures is 1-2 decades, or shorter, near-term projections may not drive adaptation until climate models become able meet this challenge. On the other hand, pausing warming does not question the need for mitigation, since it is physically unlikely, that oceans can uptake endless amount of heat. Vertical temperature gradients of the upper ocean layers already show stagnation.http://aerapa.conference.ubbcluj.ro/2014/PDF/03-Mika.pdfIPCCgeographical featuresocean heat uptakeadaptationmitigation
spellingShingle MIKA J.
ON THE PAUSED WARMING CONTROVERSY BASED ON IPCC AR5 AND BEYOND
Aerul şi Apa: Componente ale Mediului
IPCC
geographical features
ocean heat uptake
adaptation
mitigation
title ON THE PAUSED WARMING CONTROVERSY BASED ON IPCC AR5 AND BEYOND
title_full ON THE PAUSED WARMING CONTROVERSY BASED ON IPCC AR5 AND BEYOND
title_fullStr ON THE PAUSED WARMING CONTROVERSY BASED ON IPCC AR5 AND BEYOND
title_full_unstemmed ON THE PAUSED WARMING CONTROVERSY BASED ON IPCC AR5 AND BEYOND
title_short ON THE PAUSED WARMING CONTROVERSY BASED ON IPCC AR5 AND BEYOND
title_sort on the paused warming controversy based on ipcc ar5 and beyond
topic IPCC
geographical features
ocean heat uptake
adaptation
mitigation
url http://aerapa.conference.ubbcluj.ro/2014/PDF/03-Mika.pdf
work_keys_str_mv AT mikaj onthepausedwarmingcontroversybasedonipccar5andbeyond