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Precipitation over Northern Honduras and the Icelandic Low in December

Sigmund FritzDepartment of Meteorology, University of Maryland, College Park MD 20742

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Abstract

The precipitation over northern Honduras in December was significantly correlated with 700 mb heights over Valencia, Ireland. (Measurements at Valencia were used to represent a more accurate indicator of the variations in the Icelandic Low than interpolated analyses in the Low over the Atlantic Ocean.) This relationship was suggested by a comparison between observed and theoretical “wave-trains” in the 700 mb height field. The observed 700 mb height wave train over the Atlantic was related to anomalies in the sea-surface temperature (SST) over the tropical Pacific Ocean; therefore, the northern Honduran rainfall was also significantly correlated with the tropical Pacific SST.

Abstract

The precipitation over northern Honduras in December was significantly correlated with 700 mb heights over Valencia, Ireland. (Measurements at Valencia were used to represent a more accurate indicator of the variations in the Icelandic Low than interpolated analyses in the Low over the Atlantic Ocean.) This relationship was suggested by a comparison between observed and theoretical “wave-trains” in the 700 mb height field. The observed 700 mb height wave train over the Atlantic was related to anomalies in the sea-surface temperature (SST) over the tropical Pacific Ocean; therefore, the northern Honduran rainfall was also significantly correlated with the tropical Pacific SST.

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