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Map of regions covered by the 122 Weather Forecast Offices. The National Weather Service operates 122 weather forecast offices. [1] [2] Each weather forecast office (WFO or NWSFO) has a geographic area of responsibility, also known as a county warning area, for issuing local public, marine, aviation, fire, and hydrology forecasts.
MCDW data is recommended as a data source by libraries and other information providers, such as the University of Chicago Library. [3] Other publications, including annual regional climate data publications, have also cited and used MCDW data. [4] Academic research in meteorology has often cited MCDW data. [5] [6] [7]
Northwestern California has a temperate climate with rainfall of 15 inches (380 mm) to 50 inches (1,300 mm) per year. Some areas of Coast Redwood forest receive over 100 inches (2,500 mm) of precipitation per year.
The initial version of Global Historical Climatology Network was developed in the summer of 1992. [3] This first version, known as Version 1 was a collaboration between research stations and data sets alike to the World Weather Records program and the World Monthly Surface Station Climatology from the National Center for Atmospheric Research. [4]
The climate of San Diego, California, is classified as a hot-summer Mediterranean climate (Köppen climate classification Csa).While the basic climate features hot, sunny, and dry summers, and cooler, wetter winters, San Diego is more arid than the typical Mediterranean climate and consists of relatively dry winters compared to other zones with this type of climate. [2]
American Samoa's climate regime is dominated by southeast trade winds. The island dependency is wet, with annual rainfall averaging near 120 inches (3,000 mm) at the airport, with amounts closer to 200 inches (5,100 mm) in other areas. [77] There is a distinct rainy season when tropical cyclones occasionally visit between November and April.
While some measurements suggest the 2015-2016 El Niño was the strongest on record since 1950, [29] Southern California received below average precipitation contrary to what the Climate Prediction Center predicted leading up to the winter months.
Evaporative demand is particularly dominant during periods of precipitation deficit. The SPEI calculation requires long-term and high-quality precipitation and atmospheric evaporative demand datasets. These can be obtained from ground stations or gridded data based on reanalysis as well as satellite and multi-source datasets. [5]