Rain Gauge Analysis of Precipitation on Oahu

Date
2018
Authors
Hermann, Kiefer
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Nugent, Alison
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Oceanography
Global Environmental Science
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Historical rain gauge data were analyzed to identify average annual rainfall cycles across the island of Oahu for different time periods. There are diverse microclimates in Hawai‘i that are regulated by topography of the island and location relevant to the trade winds and to the two mountain ranges, the Ko‘olau and Wai‘anae. Data sets were acquired from active rain gauges maintained by USGS. The time periods that time series plots were produced for are the two successive decades 1998-2007, 2008-2017, as well as 2003-2017 and the most recent year, 2017. From data recorded in the last two decades it is unmistakable that location and elevation have an affect on the climate. Characteristics of the climate including the number of days it rains per month, as well as the monthly and seasonal average rainfall patterns. Comparison of rain gauges that were grouped into clusters based on geographic location show there is a distinct polarity in average precipitation from the windward to leeward parts of the island.
Description
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atmospheric science, meterology, rain gauge
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44 pages
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