| Full text | |
| Author(s): |
Drumond, Anita
[1]
;
Stojanovic, Milica
[2]
;
Nieto, Raquel
[3]
;
Gimeno, Luis
[3]
;
Liberato, Margarida L. R.
[2, 4]
;
Pauliquevis, Theotonio
[1]
;
Oliveira, Marina
[1]
;
Ambrizzi, Tercio
[5]
Total Authors: 8
|
| Affiliation: | [1] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, BR-09913030 Diadema - Brazil
[2] Univ Lisbon, Inst Dom Luiz, Fac Ciencias, P-1749016 Campo Grande - Portugal
[3] Univ Vigo, Environm Phys Lab EPhysLab, CIM UVigo, Orense 32004 - Spain
[4] Univ Tras Os Montes & Alto Douro, Escola Ciencias & Tecnol, P-5001801 Vila Real - Portugal
[5] Univ Sao Paulo, Dept Ciencias Atmosfer, IAG, BR-05508090 Sao Paulo - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | ATMOSPHERE; v. 12, n. 2 FEB 2021. |
| Web of Science Citations: | 2 |
| Abstract | |
A large part of the population and the economic activities of South America are located in eastern regions of the continent, where extreme climate events are a recurrent phenomenon. This study identifies and characterizes the dry and wet climate periods at domain-scale occurring over the eastern South America (ESA) during 1980-2018 through the multi-scalar Standardized Precipitation-Evapotranspiration Index (SPEI). For this study, the spatial extent of ESA was defined according to a Lagrangian approach for moisture analysis. It consists of the major continental sink of the moisture transported from the South Atlantic Ocean throughout the year, comprising the Amazonia, central Brazil, and the southeastern continental areas. The SPEI for 1, 3, 6, and 12 months of accumulation was calculated using monthly precipitation and potential evapotranspiration time series averaged on ESA. The analysis of the climate periods followed two different approaches: classification of the monthly SPEI values as mild, moderate, severe, and extreme; the computation of the events and their respective parameters (duration, severity, intensity, and peak). The results indicate that wet periods prevailed in the 1990s and 2000s, while dry conditions predominated in the 2010s, when the longest and more severe dry events have been identified at the four scales. (AU) | |
| FAPESP's process: | 17/09659-6 - Interannual variability of the meridional transports across the SAMOC basin-wide array (SAMBAR) |
| Grantee: | Edmo José Dias Campos |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 14/50848-9 - INCT 2014: INCT for Climate Change |
| Grantee: | Jose Antonio Marengo Orsini |
| Support Opportunities: | Research Program on Global Climate Change - Thematic Grants |
| FAPESP's process: | 20/09548-2 - Extreme climate events in Grande ABC: identification via the standardized precipitation index, associated oceanic conditions and socio-environmental impacts |
| Grantee: | Marina de Oliveira |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |