DOI: 10.1002/joc.5507
论文题名: Linking atmospheric circulation patterns with hydro-geomorphic disasters in Peru
作者: Rodríguez-Morata C. ; Ballesteros-Canovas J.A. ; Rohrer M. ; Espinoza J.C. ; Beniston M. ; Stoffel M.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 8 起始页码: 3388
结束页码: 3404
语种: 英语
英文关键词: ENSO phases
; hydro-geomorphic events
; Peru
; self-organizing maps
; synoptic patterns
Scopus关键词: Climatology
; Conformal mapping
; Disasters
; Oceanography
; Surface waters
; Atmospheric circulation patterns
; ENSO phases
; Geomorphic process
; Hydro-geomorphic events
; Neutral conditions
; Peru
; Sea surface temperature (SST)
; Synoptic patterns
; Self organizing maps
; atmospheric circulation
; El Nino-Southern Oscillation
; La Nina
; natural disaster
; synoptic meteorology
; Amazonia
; Andes
; Peru
英文摘要: The occurrence of El Niño has been generally considered the main driver of hydro-geomorphic processes in Peru. However, the climatic characterization of hydro-geomorphic events (HGE) occurring in the absence of El Niño remains scarce. Information contained in the DesInventar disaster database suggests a widespread occurrence of HGE associated to cold-neutral sea surface temperature (SST) in the central Pacific and south tropical Atlantic. Here, we aim at characterizing synoptic patterns associated with HGE that have occurred over last 35 years related to the different El Niño types and focusing as well on the non-Niño phases. We use the ERA-Interim reanalysis climate data and implement self-organizing maps to assess the link between HGE in Peru and specific synoptic patterns. Results suggest that synoptic patterns associated with La Niña and neutral conditions play an important role in the occurrence of hydro-geomorphic disasters in Peru during the austral summer. A total of 21% of the events are associated only with the 1972–1973, 1982–1983 and 1997–1998 El Niño events and are mainly focused in the northern Pacific coast of the country (i.e., Tumbes, Piura and Lambayeque) while more than 36% of the recorded events in the database were associated with La Niña and neutral conditions between 1970 and 2013. La Niña-related events were more relevant in the Andean–Amazonian regions, whereas neutral conditions were related to more frequent HGEs in the southern regions (south of the 13.25°S) along the Peruvian Pacific coast. These outcomes imply an enhanced understanding of the synoptic mechanisms leading to the occurrence of HGE and contribute to a better understanding of the triggers of HGE causing disaster no exclusively related to El Niño-like years in Peru. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116857
Appears in Collections: 气候减缓与适应
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作者单位: Climate Change Impacts and Risks in the Anthropocene (C-CIA), Institute for Environmental Sciences, University of Geneva, Geneva, Switzerland; Meteodat GmbH, Zurich, Switzerland; Instituto Geofísico del Perú (IGP), Subdirección de Ciencias de la Atmósfera e Hidrósfera (SCAH), Lima, Peru; Dendrolab.ch, Department of Earth Sciences, University of Geneva, Geneva, Switzerland; Department F.-A. Forel for Aquatic and Environmental Research, University of Geneva, Geneva, Switzerland
Recommended Citation:
Rodríguez-Morata C.,Ballesteros-Canovas J.A.,Rohrer M.,et al. Linking atmospheric circulation patterns with hydro-geomorphic disasters in Peru[J]. International Journal of Climatology,2018-01-01,38(8)