Impacts of landscape fragmentation on simulated precipitation fields in the Amazonian sub-basin of Ji-Parana using the Eta model

Autor(es)

Rodriguez, Daniel Andres ^[1] ; Chou, Sin Chan ^[2] ; Tomasella, Javier ^[3] ; Demaria, Eleonora M. C. ^[4]

Afiliação do(s) autor(es)

^[1] Natl Inst Space Res, Ctr Earth Syst Sci, BR-12630000 Sao Paulo - Brazil

^[2] Natl Inst Space Res, Ctr Weather Forecasts & Climate Studies, Cachoeira Paulista - Brazil

^[3] Ctr Nacl Monitoramento & Alertas Desastres Nat, Cachoeira Paulista - Brazil

^[4] Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85721 - USA

• Tipo de documento: Artigo Científico
• Fonte: THEORETICAL AND APPLIED CLIMATOLOGY; v. 115, n. 1-2, p. 121-140, JAN 2014.
• Citações Web of Science: 4

Resumo

Numerical studies on impacts of landscape fragmentation due to land use and land cover change (LUCC) on precipitation fields over the Ji-Parana basin in the Amazon region are carried out using atmospheric Eta model. Experiments consider historical data about LUCC over the basin from 1978 to 2000 and compare simulations under LUCC conditions with simulations under pristine conditions. In agreement with previous observational studies, model results do not show statistically significant impacts on precipitation in the region. Results indicate that variability in precipitation in this region is mainly controlled by large-scale atmospheric characteristics and soil moisture conditions. However, some limitations are identified in the model simulations, mainly associated to the diurnal cycle of precipitation. (AU)

• Processo FAPESP: 08/50436-1 - Efeito dos padrões espaciais do desfloramento na hidrologia da Bacia de Ji-Paraná/RO
• Beneficiário: Javier Tomasella
• Modalidade de apoio: Auxílio à Pesquisa - Regular