Overall, it is likely that there has been a 2 to 4 % increase in the number of heavy
precipitation events when averaged across the mid - and high latitudes.
Not exact matches
Computer models showed a reduction in what Edwards called «extreme
precipitation events» in the fall season in western South Dakota
when compared to climate conditions in the 1800s.
Nearly all studies to date published in the peer - reviewed literature agree that extreme
precipitation event number and intensity have risen,
when averaged over the United States.
But,
precipitation episodes in 1950 and 1955, while the dam was under construction, would have exceeded the RDE
When factored into updated hydrologic analyses in 1977, these
events (and floods in 1964 - 65 which slightly exceeded the RDF) yielded a recurrence interval of roughly 120 years (Neal, 1986).
You tend to see more flooding
events, because a warmer atmosphere can hold more moisture, so
when it does rain or snow, you actually get more
precipitation.
Then there's just this record - breaking
precipitation that we're seeing, which is also linked to warmer baseline temperatures, because
when you have warmer temperatures, you have drought, but you also have these freak
precipitation events, these big dumps, whether of storm
when you think about Boston and those images of cars fully submerged in snow, or what's happening right now in Texas, where you're getting 10 months worth of rain in a period of days.
This can occur
when the probability of
precipitation (the number of
events) decreases, or if the shape of the
precipitation distribution changes, but this latter situation is less likely (Buffoni et al., 1999; Groisman et al., 1999; Brunetti et al., 2000a, b).
Aggregates that defy locally your primer version of physics and in so doing create albedo effects lowering temperature,
precipitation events lowering sea level
when over land and altering temperature left right and centre.
Basic theory, climate model simulations and empirical evidence all confirm that warmer climates, owing to increased water vapour, lead to more intense
precipitation events even
when the total annual
precipitation is reduced slightly, and with prospects for even stronger
events when the overall
precipitation amounts increase.
There are also latent heat considerations — water vapor condenses during cloud formation and
precipitation events, and water droplets evaporate
when clouds dissipate.
Here is an excerpt of the research paper, «
When It Rains It Pours», from Environment America, showing a statistically significant spike in flash flooding and other extreme
precipitation events since 1948: «Weather records show that storms with extreme
precipitation have become more frequent over the last 60 years.