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| | P3.7 Atmospheric circulation associated to extreme rainfall events in Piura, Peru, in 2002 (2004 - 15Global) (Site not responding. Last check: 2007-10-13) |
 | | Ken Takahashi, University of Washington, Seattle, WA Piura, in northwestern Peru, is one of the places most affected by the recurrent El Niño events, which produce heavy precipitation on this otherwise arid region. |
 | | However, rainfall tends to occur in discrete intense events and an understanding of the physical conditions favouring a particular day over others with heavy rainfall, considering that SST changes little from day to day, can be useful in rainfall forecast and contribute to the preparedness of the population in the region. |
 | | Composites of vertical profiles of winds measured by a boundary layer/troposphere radar (BLTR), as well as composites of NCEP Reanalysis wind fields, suggest that rainy days are associated with an enhanced onshore westerly flow, which we propose to be the triggering mechanism of convection by orographic lifting. |
| ams.confex.com /ams/84Annual/techprogram/paper_71619.htm (255 words) |
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