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Available online: http://www.wcrp-climate.org/documents/Report_Modelling_Coordination.pdf
Published by: WMO ; 2011
Collection(s) and Series: WMO/TD- No. 1569; WCRP- No. 133
Language(s): English
Format: Digital (Free)Tags: Climate ; Climate model ; World Climate Research Programme (WCRP)
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Comparisons of Low-Level Circulation Characteristics between ECHAM5/MPI-OM Results and NCEP/NCAR Re-Analysis Data in East Asia
Atmospheric and Oceanic Science Letters, Volume 3 Number 4. Zhao De-Ming; Fu Cong-Bin - Science Press, 2010Regional climate models (RCMs) can provide far more precise information than general circulation models (GCMs). However, RCMs depend on GCM results for re-analysis products providing boundary conditions, especially for future climate scenarios. Meanwhile, the capacity of RCMs to reproduce precipitation is strongly connected to its performance on circulation and moisture transport simulations in the low troposphere, which is the key problem with RCMs at present. In the Regional Climate Model Inter-comparison Project for East Asia (RMIP III), the results of ECHAM5/MPI-OM (the European Centre-Ham ...
[article]Comparisons of Low-Level Circulation Characteristics between ECHAM5/MPI-OM Results and NCEP/NCAR Re-Analysis Data in East Asia
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Available online: http://www.iapjournals.ac.cn/aosl/ch/reader/view_abstract.aspx?file_no=AOSL10028
in Atmospheric and Oceanic Science Letters > Volume 3 Number 4 (16 July 2010) . - p.189-194Regional climate models (RCMs) can provide far more precise information than general circulation models (GCMs). However, RCMs depend on GCM results for re-analysis products providing boundary conditions, especially for future climate scenarios. Meanwhile, the capacity of RCMs to reproduce precipitation is strongly connected to its performance on circulation and moisture transport simulations in the low troposphere, which is the key problem with RCMs at present. In the Regional Climate Model Inter-comparison Project for East Asia (RMIP III), the results of ECHAM5/MPI-OM (the European Centre-Hamburg model version 5/Max Planck Institute Ocean Model, simplified as E5OM here) are used to drive RCMs for the past (1978-2000) climate simulation and future (2038-70) climate scenarios. Therefore, it is necessary to test E5OM’s ability to represent atmospheric circulation, which defines the large-scale circulation for RCMs. Here, comparisons between the E5OM results and NCEP/NCAR (simplified as NCEP) re-analysis data in the low troposphere for the years 1978 to 2000 are performed. The results show that E5OM results can generally reproduce atmospheric circulations in the low troposphere. However, differences can be detected in East Asian summer and winter monsoon simulations. For summer, there is an anti-cyclone circulation for the difference of wind vector at 850 hPa in Southeast China, the Indo-China Peninsula, the South China Sea, and the northwestern Pacific. For winter, due to the weaker northwesterly wind in Northeast Asia, the northeasterly wind from the Indo-China Peninsula to Taiwan in E5OM extends northward with greater intensity than that in NCEP. These differences will have a considerable influence on the low level atmospheric circulation and water vapor transport as well as the location and intensity of the precipitation. Therefore, when E5OM results are to be used as initial and boundary conditions to drive RCMs, the differences between NCEP and E5OM should be considered.
Language(s): English
Format: Digital (Free), Hard copyTags: Region II - Asia ; China ; Climate model ; Atmospheric circulation ; Climate ; Modelling
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Diapycnal Mixing in Transient Responses of the Atlantic Meridional Overturning Circulation in an Enhanced Freshwater Perturbation Experiment
Atmospheric and Oceanic Science Letters, Volume 3 Number 4. Yu Lei; Gao Yong-Qi; Helge Drange; et al. - Science Press, 2010It has been reported recently that the simulated Atlantic meridional overturning circulation (AMOC) using the coupled Bergen climate model (BCM) showed initial intensity declines followed by gradual recoveries over a 150-year enhanced freshwater input experiment. Stratification-dependent oceanic diapycnal mixing has been hypothesized as a reason for the simulated recovery of the AMOC. This study investigated the role of diapycnal mixing in transient responses of simulated AMOCs. Our results showed that stratification-dependent diapycnal mixing can cause stronger upwelling of deep water in the ...
[article]Diapycnal Mixing in Transient Responses of the Atlantic Meridional Overturning Circulation in an Enhanced Freshwater Perturbation Experiment
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Available online: http://www.iapjournals.ac.cn/aosl/ch/reader/view_abstract.aspx?file_no=AOSL10045
in Atmospheric and Oceanic Science Letters > Volume 3 Number 4 (16 July 2010) . - p.201-206It has been reported recently that the simulated Atlantic meridional overturning circulation (AMOC) using the coupled Bergen climate model (BCM) showed initial intensity declines followed by gradual recoveries over a 150-year enhanced freshwater input experiment. Stratification-dependent oceanic diapycnal mixing has been hypothesized as a reason for the simulated recovery of the AMOC. This study investigated the role of diapycnal mixing in transient responses of simulated AMOCs. Our results showed that stratification-dependent diapycnal mixing can cause stronger upwelling of deep water in the tropical Atlantic than that produced under conditions of fixed diapycnal mixing. Moreover, simulated AMOCs were more sensitive to active stratification-dependent diapycnal mixing than fixed mixing. However, stratification-dependent diapycnal mixing cannot be conclusively singled out as the critical cause of the recoveries of simulated AMOCs under enhanced-freshwater inputs.
Language(s): English
Format: Digital (Free), Hard copyTags: Region II - Asia ; China ; Climate model ; Atmospheric circulation ; Climate ; Ocean-atmosphere interaction ; Modelling
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The Amazon Rain Forest and Climate Change
This module discusses global climate change that is occurring largely because of greenhouse gases emitted by human activities, and in particular the impact that tropical deforestation plays in the climate system. It also covers signs of climate change, the current thinking on future changes, and international agreements that are attempting to minimize the effects of climate change. The United Nations Collaborative Programme on Reducing Emissions from Deforestation and Forest Degradation in Developing Countries (UN-REDD Programme) is also discussed.
Available online: https://www.meted.ucar.edu/training_module.php?id=556
Published by: The University Corporation for Atmospheric Research ; 2009
This module discusses global climate change that is occurring largely because of greenhouse gases emitted by human activities, and in particular the impact that tropical deforestation plays in the climate system. It also covers signs of climate change, the current thinking on future changes, and international agreements that are attempting to minimize the effects of climate change. The United Nations Collaborative Programme on Reducing Emissions from Deforestation and Forest Degradation in Developing Countries (UN-REDD Programme) is also discussed.
Disclaimer regarding 3rd party resources: WMO endeavours to ensure, but cannot and does not guarantee the accuracy, accessibility, integrity and timeliness of the information available on its website. WMO may make changes to the content of this website at any time without notice.
The responsibility for opinions expressed in articles, publications, studies and other contributions rests solely with their authors, and their posting on this website does not constitute an endorsement by WMO of the opinion expressed therein.
WMO shall not be liable for any damages incurred as a result of the use of its website. Please do not misuse our website.Language(s): English
Format: Digital (Standard Copyright)Tags: Climate change ; Drought ; Meteorology ; Precipitation ; Global warming ; Kyoto Protocol ; Climate services ; Climate model ; Afforestation ; Deforestation ; Lesson/ Tutorial ; Amazon ; Brazil ; Competencies for Provision of Climate Services
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Climate Change: Fitting the Pieces Together
This module discusses climate change, particularly as it is currently being affected by increasing concentrations of greenhouse gases emitted by human activities. It also covers signs of climate change, how scientists study climate, the current thinking on future changes, and what can be done to minimize the effects. Updated in 2012.
Available online: https://www.meted.ucar.edu/training_module.php?id=522
Published by: The University Corporation for Atmospheric Research ; 2009
This module discusses climate change, particularly as it is currently being affected by increasing concentrations of greenhouse gases emitted by human activities. It also covers signs of climate change, how scientists study climate, the current thinking on future changes, and what can be done to minimize the effects. Updated in 2012.
Disclaimer regarding 3rd party resources: WMO endeavours to ensure, but cannot and does not guarantee the accuracy, accessibility, integrity and timeliness of the information available on its website. WMO may make changes to the content of this website at any time without notice.
The responsibility for opinions expressed in articles, publications, studies and other contributions rests solely with their authors, and their posting on this website does not constitute an endorsement by WMO of the opinion expressed therein.
WMO shall not be liable for any damages incurred as a result of the use of its website. Please do not misuse our website.Language(s): English
Format: Digital (Standard Copyright)Tags: Climate change ; Drought ; Meteorology ; Precipitation ; Global warming ; Climate services ; Climate model ; Lesson/ Tutorial ; Competencies for Provision of Climate Services
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N°44 (Vol. 13, No. 1) - January 2008 - Furthering the science of ocean climate modelling
is an issue of Exchanges. International CLIVAR Project Office, 2008
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WCRP, 128. Assessment of global precipitation products : a project of the World Climate Research Programme Global Energy and Water Cycle Experiment (GEWEX) Radiation Panel
World Meteorological Organization (WMO) ; Levizzani Vincenzo; United Nations Educational, Scientific and Cultural Organization (UNESCO); et al. - WMO, 2008 (WMO/TD-No. 1430)This report is a synthesis of the current state of knowledge in measurements of global precipitation, a major component of the global water and energy cycle that influences significantly the Earth’s climate system, and in turn is affected by the climate system variability and change. It is a comprehensive assessment of the current global precipitation data records which have been assembled by combining observations from space-based and in situ measurements. These long-term records include observations over the land and oceans for a period of 25 years. The report describes in detail how these p ...
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WCRP Informal/Series Report, 9/2002. Report of the fifth session of the JSC/CLIVAR Working on coupled modelling
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 2002
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WCRP Informal/Series Report, 6/2001. Report of the fourth session of the JSC/CLIVAR Working on coupled modelling
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 2001
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WCRP Informal/Series Report, 7/2001. Joint report of the first session of the ACSYS/CliC Numerical experimentation group and the Arctic regional climate model intercomparison project workshop
Flato G.M.; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2001
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WCRP Informal/Series Report, 1/2000. Report of the third session of the JSC/CLIVAR Working on coupled modelling
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 2000
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WCRP, 110. Workshop on Cloud Processes and Cloud Feedbacks in Large-scale Models, European Centre for Medium-range Weather Forecasts
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2000 (WMO/TD-No. 993)
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GCOS, 63. Establishment of a Global Hydrological Observation Network for Climate: report of the GCOS/GTOS/HWRP expert meeting
World Meteorological Organization (WMO) ; Grabs W.; Landwehr J.; et al. - WMO, 2000 (WMO/TD-No. 1047)
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WCRP Informal/Series Report, 1/1999. Report of the second session of the JSC/CLIVAR Working on coupled modelling
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1999
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WCRP Informal/Series Report, 3/1999. Third session of the CLIVAR goals numerical experimentation group (CLIVAR NEG-1)
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1999
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GCOS, 43b. International Sea Level Workshop: workshop report
World Meteorological Organization (WMO) ; United Nations Environment Programme (UNEP); International Council for Science (ICSU); et al. - WMO, 1998
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WCRP Informal/Series Report, 3/1998. Report of the first session of the JSC/CLIVAR Working group on coupled modelling
World Meteorological Organization (WMO) ; Intergovernmental Oceanographic Commission (IOC); International Council of Scientific Unions (ICSU) - WMO, 1998
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Keynote address at the opening of the Second International Symposium on Physico-mathematical Problems related to Climate Modelling and Prediction
Obasi G.O.P; World Meteorological Organization (WMO) - WMO, 1997 (SG's lectures, speeches, statements-No. 207)
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WCRP Informal/Series Report, 2/1997. Second session of the CLIVAR ACC/DEC-CEN Numerical experimentation group (CLIVAR NEG-2)
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1997
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WCRP, 71. Global climate modelling : report of second session of WCRP Steering Group on Global Climate Modelling
World Climate Research Programme (WCRP) ; World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU) - WMO, 1992 (WMO/TD-No. 482)
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