7 results on '"Egorova, Tania"'
Search Results
2. Montreal Protocol's impact on the ozone layer and climate
- Author
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Sedlacek, Jan, primary, Egorova, Tania, additional, Sukhodolov, Timofei, additional, Karagodin-Doyennel, Arseniy, additional, Zilker, Franziska, additional, and Rozanov, Eugene, additional
- Published
- 2023
- Full Text
- View/download PDF
3. The PMIP4 contribution to CMIP6 – Part 3: The last millennium, scientific objective, and experimental design for the PMIP4 <i>past1000</i> simulations
- Author
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Jungclaus, Johann H., primary, Bard, Edouard, additional, Baroni, Mélanie, additional, Braconnot, Pascale, additional, Cao, Jian, additional, Chini, Louise P., additional, Egorova, Tania, additional, Evans, Michael, additional, González-Rouco, J. Fidel, additional, Goosse, Hugues, additional, Hurtt, George C., additional, Joos, Fortunat, additional, Kaplan, Jed O., additional, Khodri, Myriam, additional, Klein Goldewijk, Kees, additional, Krivova, Natalie, additional, LeGrande, Allegra N., additional, Lorenz, Stephan J., additional, Luterbacher, Jürg, additional, Man, Wenmin, additional, Maycock, Amanda C., additional, Meinshausen, Malte, additional, Moberg, Anders, additional, Muscheler, Raimund, additional, Nehrbass-Ahles, Christoph, additional, Otto-Bliesner, Bette I., additional, Phipps, Steven J., additional, Pongratz, Julia, additional, Rozanov, Eugene, additional, Schmidt, Gavin A., additional, Schmidt, Hauke, additional, Schmutz, Werner, additional, Schurer, Andrew, additional, Shapiro, Alexander I., additional, Sigl, Michael, additional, Smerdon, Jason E., additional, Solanki, Sami K., additional, Timmreck, Claudia, additional, Toohey, Matthew, additional, Usoskin, Ilya G., additional, Wagner, Sebastian, additional, Wu, Chi-Ju, additional, Yeo, Kok Leng, additional, Zanchettin, Davide, additional, Zhang, Qiong, additional, and Zorita, Eduardo, additional
- Published
- 2017
- Full Text
- View/download PDF
4. The PMIP4 contribution to CMIP6 – Part 3: the Last Millennium, Scientific Objective and Experimental Design for the PMIP4 <i>past1000</i> simulations
- Author
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Jungclaus, Johann H., primary, Bard, Edouard, additional, Baroni, Mélanie, additional, Braconnot, Pascale, additional, Cao, Jian, additional, Chini, Louise P., additional, Egorova, Tania, additional, Evans, Michael, additional, González-Rouco, J. Fidel, additional, Goosse, Hugues, additional, Hurtt, Georges C., additional, Joos, Fortunat, additional, Kaplan, Jed O., additional, Khodri, Myriam, additional, Klein Goldewijk, Kees, additional, Krivova, Natalie, additional, LeGrande, Allegra N., additional, Lorenz, Stephan J., additional, Luterbacher, Jürg, additional, Man, Wenmin, additional, Meinshausen, Malte, additional, Moberg, Anders, additional, Nehrbass-Ahles, Christian, additional, Otto-Bliesner, Bette I., additional, Phipps, Stephen J., additional, Pongratz, Julia, additional, Rozanov, Eugene, additional, Schmidt, Gavin A., additional, Schmidt, Hauke, additional, Schmutz, Werner, additional, Schurer, Andrew, additional, Shapiro, Alexander I., additional, Sigl, Michael, additional, Smerdon, Jason E., additional, Solanki, Sami K., additional, Timmreck, Claudia, additional, Toohey, Matthew, additional, Usoskin, Ilya G., additional, Wagner, Sebastian, additional, Wu, Chi-Yu, additional, Yeo, Kok L., additional, Zanchettin, Davide, additional, Zhang, Qiong, additional, and Zorita, Eduardo, additional
- Published
- 2016
- Full Text
- View/download PDF
5. The PMIP4 contribution to CMIP6 - Part 3: The last millennium, scientific objective, and experimental design for the PMIP4 past1000 simulations.
- Author
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Jungclaus, Johann H., Bard, Edouard, Baroni, Mélanie, Braconnot, Pascale, Cao, Jian, Chini, Louise P., Egorova, Tania, Evans, Michael, González-Rouco, J. Fidel, Goosse, Hugues, Hurtt, George C., Joos, Fortunat, Kaplan, Jed O., Khodri, Myriam, Goldewijk, Kees Klein, Krivova, Natalie, LeGrande, Allegra N., Lorenz, Stephan J., Luterbacher, Jürg, and Man, Wenmin
- Subjects
PALEOCLIMATOLOGY ,GREENHOUSE gases ,EXPERIMENTAL design ,COMPUTER simulation ,SIMULATION methods & models ,MATHEMATICAL models - Abstract
The pre-industrial millennium is among the periods selected by the Paleoclimate Model Intercomparison Project (PMIP) for experiments contributing to the sixth phase of the Coupled Model Intercomparison Project (CMIP6) and the fourth phase of the PMIP (PMIP4). The past1000 transient simulations serve to investigate the response to (mainly) natural forcing under background conditions not too different from today, and to discriminate between forced and internally generated variability on interannual to centennial timescales. This paper describes the motivation and the experimental set-ups for the PMIP4-CMIP6 past1000 simulations, and discusses the forcing agents orbital, solar, volcanic, and land use/land cover changes, and variations in greenhouse gas concentrations. The past1000 simulations covering the pre-industrial millennium from 850 Common Era (CE) to 1849 CE have to be complemented by historical simulations (1850 to 2014 CE) following the CMIP6 protocol. The external forcings for the past1000 experiments have been adapted to provide a seamless transition across these time periods. Protocols for the past1000 simulations have been divided into three tiers. A default forcing data set has been defined for the Tier 1 (the CMIP6 past1000) experiment. However, the PMIP community has maintained the flexibility to conduct coordinated sensitivity experiments to explore uncertainty in forcing reconstructions as well as parameter uncertainty in dedicated Tier 2 simulations. Additional experiments (Tier 3) are defined to foster collaborative model experiments focusing on the early instrumental period and to extend the temporal range and the scope of the simulations. This paper outlines current and future research foci and common analyses for collaborative work between the PMIP and the observational communities (reconstructions, instrumental data). [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
6. The PMIP4 contribution to CMIP6 - Part 3: the Last Millennium, Scientific Objective and Experimental Design for the PMIP4 past1000 simulations.
- Author
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Jungclaus, Johann H., Bard, Edouard, Baroni, Mélanie, Braconnot, Pascale, Jian Cao, Chini, Louise P., Egorova, Tania, Evans, Michael, González-Rouco, J. Fidel, Goosse, Hugues, Hurtt, Georges C., Joos, Fortunat, Kaplan, Jed O., Khodri, Myriam, Goldewijk, Kees Klein, Krivova, Natalie, LeGrande, Allegra N., Lorenz, Stephan J., Luterbacher, Jürg, and Wenmin Man
- Subjects
PALEOCLIMATOLOGY ,GREENHOUSE gas mitigation ,COMPUTER simulation ,CLIMATE change ,LAND cover - Abstract
The pre-industrial millennium is among the periods selected by the Paleoclimate Model Intercomparison Project (PMIP) for experiments contributing to the sixth phase of the Coupled Model Intercomparison Project (CMIP6) and the fourth phase of PMIP (PMIP4). The past1000 transient simulations serve to investigate the response to (mainly) natural forcing under background conditions not too different from today, and to discriminate between forced and internally generated variability on interannual to centennial time scales. This manuscript describes the motivation and the experimental set-ups for the PMIP4-CMIP6 past1000 simulations, and discusses the forcing agents: orbital, solar, volcanic, land-use/land-cover changes, and variations in greenhouse gas concentrations. The past1000 simulations covering the pre-industrial millennium from 850 Common Era (CE) to 1849 CE have to be complemented by historical simulations (1850 to 2014 CE) following the CMIP6 protocol. The external forcings for the past1000 experiments have been adapted to provide a seamless transition across these time periods. Protocols for the past1000 simulations have been divided into three tiers. A default forcing data set has been defined for the "tier-1" (the CMIP6 past1000) experiment. However, the PMIP community has maintained the flexibility to conduct coordinated sensitivity experiments to explore uncertainty in forcing reconstructions as well as parameter uncertainty in dedicated "tier-2" simulations. Additional experiments ("tier-3") are defined to foster collaborative model experiments focusing on the early instrumental period and to extend the temporal range and the scope of the simulations. This manuscript outlines current and future research foci and common analyses for collaborative work between the PMIP and the observational communities (reconstructions, instrumental data). [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
7. Montreal Protocol benefits simulated with CCM SOCOL
- Author
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Egorova, Tania, Rozanov, Eugene, Gröbner, Julian, Hauser, Mathias, and Schmutz, Werner
- Subjects
13. Climate action - Abstract
Ozone depletion is caused by the anthropogenic increase of halogen containingspecies in the atmosphere, which results in the enhancement of the concentrationof reactive chlorine and bromine in the stratosphere. To reduce the influence of an-thropogenic ozone-depleting substances (ODS), the Montreal Protocol was agreed by5Governments in 1987, with several Amendments adopted later. In order to assess thebenefits of the Montreal Protocol and its Amendments (MPA) on ozone and UV radia-tion, two different runs of the chemistry-climate model (CCM) SOCOL have been car-ried out. The first run was driven by the emission of ozone depleting substances (ODS)prescribed according to the restrictions of the Montreal Protocol and all its Amend-10ments. For the second run we allow the ODS to grow by 3 % annually. We find thatthe MPA would have saved up to 80 % of the global annual total ozone by the end ofthe 21st century. Our calculations also show substantial changes in surface tempera-ture and precipitations that could occur in the world without MPA implementations. Toillustrate the changes in UV radiation at the surface and to emphasize certain features15which can only be seen for some particular regions if the influence of the cloud coverchanges is accounted for, we calculate geographical distribution of the erythemallyweighted irradiance (Eery). For the no Montreal Protocol simulationEeryincreases byfactor of 4 to 16 between the 1970s and 2100. For the scenario including the MontrealProtocol it is found that UV radiation starts to decrease in 2000, with continuous decline20of 5 % to 10% at middle latitudes in the Northern and Southern hemispheres., Atmospheric Chemistry and Physics, 12 (7), ISSN:1680-7375, ISSN:1680-7367
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