NDLI: The dynamics of the warming hiatus over the Northern Hemisphere

Content Provider	Springer Nature Link
Author	Huang, Jianping Xie, Yongkun Guan, Xiaodan Li, Dongdong Ji, Fei
Copyright Year	2016
Abstract	A warming hiatus is a period of relatively little change in global mean surface air temperatures (SAT). Many studies have attributed the current warming hiatus to internal climate variability (ICV). But there is less work on discussion of the dynamics about how these ICV modes influence cooling over land in the Northern Hemisphere (NH). Here we demonstrate the warming hiatus was more significant over the continental NH. We explored the dynamics of the warming hiatus from a global perspective and investigated the mechanisms of the reversing from accelerated warming to hiatus, and how ICV modes influence SAT change throughout the NH land. It was found that these ICV modes and Arctic amplification can excite a decadal modulated oscillation (DMO), which enhances or suppresses the long-term trend on decadal to multi-decadal timescales. When the DMO is in an upward (warming) phase, it contributes to an accelerated warming trend, as in last 20 years of twentieth-century. It appears that there is a downward swing in the DMO occurring at present, which has balanced or reduced the radiative forced warming and resulted in the recent global warming hiatus. The DMO modulates the SAT, in particular, the SAT of boreal cold months, through changes in the asymmetric meridional and zonal thermal forcing (MTF and ZTF). The MTF represents the meridional temperature gradients between the mid- and high-latitudes, and the ZTF represents the asymmetry in temperatures between the extratropical large-scale warm and cold zones in the zonal direction. Via the different performance of combined MTF and ZTF, we found that the DMO’s modulation effect on SAT was strongest when both weaker (stronger) MTF and stronger (weaker) ZTF occurred simultaneously. And the current hiatus is a result of a downward DMO combined with a weaker MTF and stronger ZTF, which stimulate both a weaker polar vortex and westerly winds, along with the amplified planetary waves, thereby facilitating southward invasion of cold Arctic-air and promoting the blocking formation. The results conclude that the DMO can not only be used to interpret the current warming hiatus, it also suggests that global warming will accelerate again when it swings upward.
Starting Page	429
Ending Page	446
Page Count	18
File Format	PDF
ISSN	09307575
Journal	Climate Dynamics
Volume Number	48
Issue Number	1-2
e-ISSN	14320894
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-05-09
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Warming hiatus Decadal modulated oscillation (DMO) Internal climate variability Geophysics/Geodesy Climatology Oceanography
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The dynamics of the warming hiatus over the Northern Hemisphere

Global and regional surface cooling in a warming climate: a multi-model analysis

Northern hemisphere winter atmospheric climate: modes of natural variability and climate change

Interpreting observed northern hemisphere snow trends with large ensembles of climate simulations

Southern Hemisphere rainfall variability over the past 200 years

The role of Atlantic Multi-decadal Oscillation in the global mean temperature variability

Decadal climate variability in the Mediterranean region: roles of large-scale forcings and regional processes

The hiatus and accelerated warming decades in CMIP5 simulations

Decadal prediction of Sahel rainfall: where does the skill (or lack thereof) come from?

The dynamics of the warming hiatus over the Northern Hemisphere

Similar Documents

The dynamics of the warming hiatus over the Northern Hemisphere

Global and regional surface cooling in a warming climate: a multi-model analysis

Northern hemisphere winter atmospheric climate: modes of natural variability and climate change

Interpreting observed northern hemisphere snow trends with large ensembles of climate simulations

Southern Hemisphere rainfall variability over the past 200 years

The role of Atlantic Multi-decadal Oscillation in the global mean temperature variability

Decadal climate variability in the Mediterranean region: roles of large-scale forcings and regional processes

The hiatus and accelerated warming decades in CMIP5 simulations

Decadal prediction of Sahel rainfall: where does the skill (or lack thereof) come from?

The dynamics of the warming hiatus over the Northern Hemisphere