Hawaii Rainfall Anomalies and El Niño

View More View Less
  • 1 Department of Meteorology, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, Hawaii
© Get Permissions
Full access

Abstract

An analysis of composite, seasonal rainfall anomalies in Hawaii shows that deficient rainfall tends to occur frequently in winter and spring of the year following an El Niño. The reliability of the El Niño composite has been tested using a Monte Carlo simulation technique. Upper-air circulation patterns during the recent three El Niño events are discussed in relation to drought winters in Hawaii. The more eastward elongated subtropical jet stream in the North Pacific and the thermally induced local Hadley circulation in the central North Pacific, characteristics of El Niño winters, are unfavorable for rainfall in Hawaii.

Abstract

An analysis of composite, seasonal rainfall anomalies in Hawaii shows that deficient rainfall tends to occur frequently in winter and spring of the year following an El Niño. The reliability of the El Niño composite has been tested using a Monte Carlo simulation technique. Upper-air circulation patterns during the recent three El Niño events are discussed in relation to drought winters in Hawaii. The more eastward elongated subtropical jet stream in the North Pacific and the thermally induced local Hadley circulation in the central North Pacific, characteristics of El Niño winters, are unfavorable for rainfall in Hawaii.

Save