Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.6370 |
Climate variability over South America-regional and large scale features simulated by the Brazilian Atmospheric Model (BAM-v0) | |
Cavalcanti, Iracema F. A.; Silveira, Virginia P.; Figueroa, Silvio N.; Kubota, Paulo Y.; Bonatti, Jose P.; de Souza, Dayana C. | |
2019-12-27 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Brazil |
英文摘要 | The reliability of climate prediction by a global model is directly related to the ability to simulate the observed climate variability and the main teleconnection patterns. Precipitation anomalies in certain regions are strongly affected by these features, and it is important to know if models are able to reproduce such patterns and influences. The main objective of this article is to analyse some global features of the Brazilian Atmospheric Model with simplified physics (BAM-v0), and to discuss several aspects of climate variability over South America. Especially, the ability of the model in simulating the main teleconnection patterns that affect South America and the precipitation variability in several regions of Brazil associated with the Pacific and Atlantic Sea Surface Temperature. The model is the atmospheric component of the Brazilian Earth System Model-Ocean-Atmosphere (BESM), which can be used to long integrations due to the simplified physics, considering computer limitations. Climate variability is investigated through analyses of variance and correlations, and teleconnections such as Southern Annular Mode (SAM) and Pacific South American (PSA) are obtained from EOF analyses. El Nino Southern Oscillation (ENSO) features are analysed through the Southern Oscillation Index and precipitation anomalies. BAM-v0, even at coarse resolution, represents many climate variability features. It captures the influences of tropical Pacific and Atlantic Oceans on Northeast Brazil precipitation and reproduces the influences of ENSO over South America. SAM and PSA teleconnections are well simulated. Observed features of the South America Monsoon System are captured by the model, although the intensities of precipitation variability need to be improved. There are some deficiencies related to global budget, precipitation variance in some regions of the globe and precipitation anomalies in certain regions of South America. Identification of model deficiencies and variability analyses are important to model development and contribute to climate prediction improvements. |
英文关键词 | Atmospheric Global Circulation Model BAM-v0 climate variability South America teleconnections |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000504475700001 |
WOS关键词 | SURFACE TEMPERATURE ANOMALIES ; EXTREME PRECIPITATION ; ANTARCTIC OSCILLATION ; INTERANNUAL VARIABILITY ; SEASONAL PRECIPITATION ; SOUTHEASTERN BRAZIL ; AUSTRAL SUMMER ; SYSTEM MODEL ; EL-NINO ; PACIFIC |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225538 |
专题 | 环境与发展全球科技态势 |
作者单位 | Natl Inst Space Res, Ctr Weather Forecasting & Climate Studies, Sao Jose Dos Campos, SP, Brazil |
推荐引用方式 GB/T 7714 | Cavalcanti, Iracema F. A.,Silveira, Virginia P.,Figueroa, Silvio N.,et al. Climate variability over South America-regional and large scale features simulated by the Brazilian Atmospheric Model (BAM-v0)[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019. |
APA | Cavalcanti, Iracema F. A.,Silveira, Virginia P.,Figueroa, Silvio N.,Kubota, Paulo Y.,Bonatti, Jose P.,&de Souza, Dayana C..(2019).Climate variability over South America-regional and large scale features simulated by the Brazilian Atmospheric Model (BAM-v0).INTERNATIONAL JOURNAL OF CLIMATOLOGY. |
MLA | Cavalcanti, Iracema F. A.,et al."Climate variability over South America-regional and large scale features simulated by the Brazilian Atmospheric Model (BAM-v0)".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019). |
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