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ISSN: 2157-7617

Journal of Earth Science & Climatic Change
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  • Research Article   
  • J Earth Sci Clim Change 2015, Vol 6(8): 296
  • DOI: 10.4172/2157-7617.1000296

Long-term Temperature and Rainfall Trends over Northeast Brazil and Cape Verde

Lacerda FF1, Nobre P2, Sobral MC3, Lopes GMB1*, Chou SC2, Assad ED4 and Brito E5
1Agronomic Institute of Pernambuco – IPA, , Brazil
2National Institute for Space Research – INPE, , Brazil
3Federal University of Pernambuco – UFPE, , Brazil
4Brazilian Agricultural Research Corporation – Embrapa, , Brazil
5National Meteorology and Geophysics Institute – INMG, , Cape Verde
*Corresponding Author : Lopes GMB, Agronomic Institute of Pernambuco, IPA, Av. General San Martin 1371 - Jiquiá, PE, Brazil, Tel: +55 81 3184-7200, Email: [email protected]

Received Date: Jul 30, 2015 / Accepted Date: Aug 28, 2015 / Published Date: Sep 08, 2015

Abstract

This study investigates long-term climate trends in Pernambuco, Northeast Brazil (Nordeste), and in the Tropical Atlantic islands of Fernando de Noronha and Cape Verde. The study is based on meteorological station time series and model simulations of present and future climates. Past trends are compared with numerical simulations of present and future climate scenarios for the periods of 1960-2000 and 2010-2050. Both the station data analyses and numerical simulations revealed trends of increasing temperature maxima and diminishing precipitation. While station data analyses showed modest warming in Fernando de Noronha they revealed strong warming and drying trends in Cape Verde similar to the trends detected over the semiarid Nordeste. The water-balance calculations for the study sites showed reduced soil moisture availability and total rainfall in all areas. The observed temperature and precipitation trends are indicative that aridification processes are underway in Pernambuco and Cape Verde. The atmospheric model simulations were consistent with the station data regarding the present warming; the climate change scenarios for 2010-2050 indicated a faster increase of daily temperature maxima over Nordeste compared to that simulated for the recent past.

Keywords: Anthropogenic origin; Global temperature; Meteorological; Rainfall; Temperature

Citation: Lacerda FF, Nobre P, Sobral MC, Lopes GMB, Chou SC (2015) Longterm Temperature and Rainfall Trends over Northeast Brazil and Cape Verde. J Earth Sci Clim Change. 6: 296. Doi: 10.4172/2157-7617.1000296

Copyright: © 2015 Lacerda FF, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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