Rainfall variability in the Brazilian northeast biomes and their interactions with meteorological systems and ENSO via CHELSA product  

作　　者：Washington Luiz Félix Correia Filho JoséFrancisco De Oliveira-Júnior Dimas De Barros Santiago Paulo Miguel De Bodas Terassi Paulo Eduardo Teodoro Givanildo De Gois Claudio JoséCavalcante Blanco Pedro Henrique De Almeida Souza Micejane da Silva Costa Heliofábio Barros Gomes Paulo JoséDos Santos 

机构地区：[1]Institute of Atmospheric Sciences(ICAT),Federal University of Alagoas(UFAL),Maceió,Brazil [2]Postgraduate Program in Biosystems Engineering(PGEB),Federal Fluminense University(UFF),Niterói,Brazil [3]Postgraduate Program in Meteorology,Unidade Acadêmica de Ciências Atmosféricas(UACA),Federal Universityof Campina Grande(UFCG),Campina Grande,Brazil [4]Postgraduate Program in Physical Geography,University of São Paulo(USP),São Paulo,Brazil [5]Federal University of Mato Grosso do Sul(UFMS),Chapadão do Sul,Brazil [6]fSchool of Industrial Metallurgical Engineering of Volta Redonda,Technological Center,Universidade Federal Fluminense(UFF),Volta Redonda,Brazil [7]Faculty of Sanitary and Environmental Engineering(FAESA/ITEC),Federal University of Pará(UFPA),Belém,Brazil

出　　处：《Big Earth Data》2019年第4期315-337,共23页地球大数据（英文）

基　　金：supported by the National Council for Research and Development(CNPq)[424605/2018-0];Education Personnel Improvement Coordination(CAPES)[001];National Council for Research and Development(CNPq)[304936/2015-4].

摘　　要：Brazilian biomes are home to a significant portion of the world’s biodiversity,with a total of 14%of existing species and still concentrate 20%of the world’s water resources.However,changes in biomes have a direct impact on rainfall patterns and water recycling.Based on this,the objective was to evaluate the variability of rainfall in the four existing biomes in the Northeast Brazil(NEB)and their interaction with the ENSO climate variability mode and regional scale meteorological systems via CHELSA product.For this,monthly rainfall data were used from 1979 to 2013,with a spatial resolution of 1 km×1 km of the CHELSA product,and seasonal and annual rainfall patterns were extracted via boxplot.It was found that the rainy season in the Amazon,Caatinga and Cerrado biomes occurred between January and April,with varying intensities,except for the Atlantic Forest.Such seasonality patterns are associated with the NEB meteorological systems,with emphasis on ITCZ(all Biomes),UTCV(Amazon,Caatinga and Cerrado),Frontal Systems(extreme south of Caatinga,Cerrado and Atlantic Forest)and EWD/TWD in the(Atlantic Forest).In the inter-annual scale,the remarkable influence of ENSO was verified,mainly in the years 1983,1985,1989,1993,1998,2009 and 2012.It is noteworthy that 1985 was the wettest year of the period,with a surplus in all biomes,while the driest year differs between the Amazon(1983),Atlantic Forest and Caatinga(1993)and Cerrado(2012)biomes.The study via orbital product in NEB showed that anthropogenic processes and natural variability interfere with the forms of rain interception in the biomes and hence in rainfall patterns and water recycling in NEB.

关 键 词：Phytophysiognomy RAINFALL inter-annual variability water recycling climate change land use and occupation 

分 类 号：P73[天文地球—海洋科学]