DOI: 10.1002/joc.5718
论文题名: Analysis of atmospheric moisture transport to the Upper Paraná River basin
作者: Zandonadi Moura L. ; Lima C.H.R.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 14 起始页码: 5153
结束页码: 5167
语种: 英语
英文关键词: drought
; flood
; HYSPLIT
; Lagrangian water balance
; storm tracks
; upper Paraná River basin
; water vapour tracer
Scopus关键词: Advection
; Climate change
; Drought
; Floods
; Lagrange multipliers
; Moisture
; Rivers
; Stream flow
; Tropics
; Water vapor
; Watersheds
; HYSPLIT
; River basins
; Storm track
; Water balance
; Water vapour
; Atmospheric movements
; atmospheric moisture
; drought
; flood
; Lagrangian analysis
; moisture transfer
; storm track
; tracer
; water budget
; water vapor
; Amazonia
; Atlantic Ocean
; Brazil
; Parana Basin
英文摘要: The understanding of the atmospheric phase of the hydrological cycle is an important step forward in improving our abilities to predict droughts and floods, as well as the impacts of climate change on water resources. Here we focus on the study of the atmospheric moisture transport to the Upper Paraná River basin, Brazil, through the hybrid single-particle Lagrangian integrated trajectory (HYSPLIT) dispersion model, which is used to generate air masses trajectories based on the 1970–2010 National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis data. In terms of moisture source regions, we found that the tropical South Atlantic is the main contributor to the Upper Paraná River basin, exporting about 175 mm/month of water vapour during the rainy season. The North Atlantic contribution is relevant in February (about 38 mm/month). Other regions over the Atlantic Ocean (North and subtropical South) are also identified as sources, and moisture evaporated from these places has a significant impact on the streamflow variability at the Itaipu streamflow gauge, located at the basin outlet. The continental sources play a more relevant role during the dry season (May–October). The Amazon region is more relevant as a moisture source during the dry season, exporting an average of 45 mm/month. A similar pattern is observed in other continental sources, such as Chaco/Pantanal/Cerrado, which together export about 99 mm/month to the Paraná River basin during the dry season. An extreme event analysis reveals that changes in moisture advection from the tropical South Atlantic are related to floods and droughts in the region. Particularly, we observe that flood events are preceded by positive anomalies of moisture advection up to 2 months in advance, while persistent, negative anomalies of moisture transport lead seasonal droughts by up to 8 months beforehand. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116726
Appears in Collections: 气候减缓与适应
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作者单位: Universidade de Brasília, Brasília, Brazil
Recommended Citation:
Zandonadi Moura L.,Lima C.H.R.. Analysis of atmospheric moisture transport to the Upper Paraná River basin[J]. International Journal of Climatology,2018-01-01,38(14)