Identity statement area | |
Reference Type | Conference Extended Abstract (Conference Proceedings) |
Site | mtc-m21b.sid.inpe.br |
Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
Identifier | 8JMKD3MGP3W34P/3KDP6PH |
Repository | sid.inpe.br/mtc-m21b/2015/10.14.19.10 |
Last Update | 2021:02.23.13.07.29 simone |
Metadata | sid.inpe.br/mtc-m21b/2015/10.14.19.10.45 |
Metadata Last Update | 2021:02.23.13.07.30 simone |
Label | self-archiving-INPE-MCTI-GOV-BR |
Citation Key | GiarollaNobrMala:2013:KnBiPo |
Title | The Atlantic Equatorial Thermocline as simulated by the Brazilian Earth System Model: known biases and possible causes  |
Project | Rede Clima |
Year | 2013 |
Access Date | 2021, Feb. 28 |
Number of Files | 1 |
Size | 66 KiB |
Context area | |
Author | 1 Giarolla, Emanuel 2 Nobre, Paulo 3 Malagutti, Marta |
Resume Identifier | 1 8JMKD3MGP5W/3C9JH2A 2 8JMKD3MGP5W/3C9JJ3B |
Group | 1 DMD-CPT-INPE-MCTI-GOV-BR 2 DMD-CPT-INPE-MCTI-GOV-BR 3 DMD-CPT-INPE-MCTI-GOV-BR |
Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) |
e-Mail Address | deicy.Farabello@inpe.br |
Conference Name | American Geophysical Union - Spring Meeting 2013 |
Conference Location | San Francisco, CA |
Date | 05/2013 |
Volume | 1 |
Pages | 2 |
Book Title | Extended Abstracts |
Secondary Type | PRE CI |
Tertiary Type | Extended Abstact |
History | 2015-10-14 19:10:45 :: deicy.Farabello@inpe.br -> administrator :: 2021-02-23 13:07:12 :: administrator -> simone :: 2013 |
Content and structure area | |
Is the master or a copy? | is the master |
Content Stage | completed |
Transferable | 1 |
Content Type | External Contribution |
Version Type | publisher |
Keywords | Atmospheric Processes, Global Climate Models, Atmospheric Process, Model Calibration, Atmospheric Processes, Ocean atmosphere interactions, Atmospheric Processes, Tropical Meteorology. |
Abstract | As a result of a coordinated effort of several institutions in Brazil, the Brazilian Earth System Model has been developed to help the investigation of global climate changes, its effects and impacts on society. The first version of this model, here named Brazilian Earth System Model - Ocean-Atmosphere version 2.3 (BESM-OA2.3), followed the criteria for participation in the Coupled Models Intercomparison Project 5 (CMIP5) protocol, simulating the behavior of the coupled ocean-atmosphere system on decadal time scales under varying green house gases concentrations in the atmosphere. Extended runs with over 2,000 years of ensemble members showed many coherent results, such as the response of the model to increasing atmospheric CO2 concentrations in a consistent manner. In spite of that, the model still has biases and discrepancies when compared to observations, some of them also detected in other global coupled ocean-atmosphere models. As an example of known bias, the thermocline along the Atlantic equator flattens after the second year of simulation. In other words, it anomalously deepens at the eastern region near the African coast after some months. This issue is observed in all CMIP5-based experiments made with the BESM-OA2.3. However, a newer version of the BESM-OA, with updated microphysics parameterizations and the Integrated Biosphere Simulator (IBIS) included, has shown promising results, i.e., the thermocline tends to maintain its inclination in the second year better than the first version of BESM-OA. In this work we discuss the possible causes of the thermocline flattening comparing simulations of both model versions. We don't have conclusive explanations since the study is still in progress, but some results indicate that the seasonal eastward shift of the zonal wind reversion (represented as the zero zonal wind line) at the Atlantic equator, in April-May, is better represented in the newest version of the model. With more realistic winds at the equator, the mean Equatorial Undercurrent core at 23o W, averaged after the first year, does not become shallower as in the previous version of the model, causing the thermocline to keep its slope after the first year of simulation. |
Area | MET |
source Directory Content | there are no files |
agreement Directory Content | |
Conditions of access and use area | |
data URL | http://urlib.net/rep/8JMKD3MGP3W34P/3KDP6PH |
zipped data URL | http://urlib.net/zip/8JMKD3MGP3W34P/3KDP6PH |
Language | en |
Target File | giarolla_atlantic.pdf |
User Group | deicy.Farabello@inpe.br |
Reader Group | administrator deicy.Farabello@inpe.br simone |
Visibility | shown |
Update Permission | not transferred |
Allied materials area | |
Mirror Repository | sid.inpe.br/mtc-m21b/2013/09.26.14.25.22 |
Next Higher Units | 8JMKD3MGPCW/43SKC35 |
Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 |
Notes area | |
Notes | abstract #A52A-02 |
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