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Fire is the dominant type of disturbance in boreal North America, but the past 30-plus years have seen a gradual increase in fire frequency and severity as a result of warmer and drier conditions. From the 1960s to the 1990s, the annual area burned increased from an average of 1.4 to 3.1 million hectares per year.
The city averages approximately 300 days of sunshine, or over 85% of daylight hours, per year, [14] [15] and receives scant rainfall―the average annual total at Phoenix Sky Harbor International Airport is 7.22 in (183 mm).
The taiga experiences relatively low precipitation throughout the year (generally 200–750 mm (7.9–29.5 in) annually, 1,000 mm (39 in) in some areas), primarily as rain during the summer months, but also as snow or fog. Snow may remain on the ground for as long as nine months in the northernmost extensions of the taiga biome. [25]
Climate data for Phoenix Int'l, Arizona (1991–2020 normals, [a] extremes 1895–present) [b]; Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °F (°C)
Average monthly precipitation (in mm) for selected cities in Asia ; City Country Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ref. Mawsynram: India: 133.0 8.3 15.7 27.4 29.8 26.0 5.7
Over the contiguous United States, total annual precipitation increased at an average rate of 6.1 percent per century since 1900, with the greatest increases within the East North Central climate region (11.6 percent per century) and the South (11.1 percent). Hawaii was the only region to show a decrease (−9.25 percent). [89]
Arizona's average rainfall. Precipitation in Arizona is governed by elevation and the season of year. The peak periods of rainfall are during the early winter, when storm systems from the Pacific Ocean cross the state, and during the summer, when moisture-bearing winds sweep into Arizona from the southeast, which obtain moisture from the Gulf ...
This is a list of countries by average annual precipitation. List. Per the World Bank (2017) [1] [2] Country mm/ year) Continent 1