The paper, in the new issue of Journal of Climate, is «The resolution dependence of contiguous
U.S. precipitation extremes in response to CO2 forcing» — by Karin van der Wiel of Princeton and colleagues.
Not exact matches
The 2014 National Climate Assessment predicted that many
U.S. communities will see
extreme precipitation events more often as global temperatures rise.
In addition to accounting for drought and hurricane winds, the index considers temperature and
precipitation extremes in the
U.S..
The coverage of
extreme precipitation totals and warm temperatures contributed to the fourth highest
U.S. Climate
Extremes Index in the 106 - year record for the CONUS.
Even though the cold in the
U.S. has not been unprecedented, the public perception is «
extreme» because the cold in the central / eastern / southeastern
U.S., drought in California, and the heat / heavy
precipitation in Alaska has been so prolonged.
Increases in the frequency and intensity of
extreme precipitation events are projected for all
U.S. regions.
The
U.S. Climate
Extremes Index (USCEI), an index that tracks the highest and lowest 10 percent of extremes in temperature, precipitation, drought and tropical cyclones across the contiguous U.S., was a record - large 44 percent during the January - June period, over twice the averag
Extremes Index (USCEI), an index that tracks the highest and lowest 10 percent of
extremes in temperature, precipitation, drought and tropical cyclones across the contiguous U.S., was a record - large 44 percent during the January - June period, over twice the averag
extremes in temperature,
precipitation, drought and tropical cyclones across the contiguous
U.S., was a record - large 44 percent during the January - June period, over twice the average value.
For example, the two models with the highest resolution (FLOR and HiFLOR) show increased
extreme precipitation during the Atlantic hurricane season in the
U.S. southeast.
Evidence that
extreme precipitation is increasing is based primarily on analysis1, 2,3 of hourly and daily
precipitation observations from the
U.S. Cooperative Observer Network, and is supported by observed increases in atmospheric water vapor.4 Recent publications have projected an increase in
extreme precipitation events, 1,5 with some areas getting larger increases6 and some getting decreases.7, 2
In the mid-latitudes, where most of the continental
U.S. is located, there is an upward trend in
extreme precipitation in the vicinity of fronts associated with mid-latitude storms.1 Locally, natural variations can also be important.14
A CURRENT EXAMPLE OF
EXTREME SEA SURFACE TEMPS AFFECTING THE
EXTREME PRECIPITATION EVENT THAT HIT THE
U.S. WEST
One of the major findings is an increase in key types of
extreme weather events, especially in heat waves and large
precipitation events, in the
U.S. and around the world over the last 50 years.
Understanding and modeling the fundamental processes that govern the large
precipitation variability and
extremes in the western
U.S. is a critical test for the ability of climate models to predict the regional water cycle, including floods and droughts.