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The Pacific Decadal oscillation, or PDO, is a long-term oscillation in Pacific Ocean temperatures. It is one of several known swings in ocean temperature between two phases, a “cold” phase and a “warm” phase. The most well-known natural oscillation like this is the El Nino-Southern Oscillation, which changes phase every 3-5 years. The PDO is…
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Have humans already changed the climate of earth? As Cliff Mass of the University of Washington describes in his blog this week, “The answer is emphatically yes.” But the changes are due to much more than just the addition of greenhouse gases like carbon dioxide into the atmosphere. Our changes also have to do with…
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After a nice weekend, get ready for a very wet week ahead for everywhere in the Southeast except for south Florida. The 7-day QPF show that places in the Southeast may get up to seven inches (updated from 5 inches this morning–see both maps below with newer map on the right) of rain in the…
Posted in: Climate outlooks -
April 2015 marks the 200th anniversary of the most powerful volcanic eruption in modern times, the eruption of Mount Tambora in Indonesia. This eruption is discussed in awe in climatology classes because of what we now know about the impacts of volcanic activity on climate–it depresses global temperatures for up to five years after a…
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Allison Floyd of Growing Georgia posted an article on Thursday describing some of the agricultural effects that this winter and spring’s weather has had on crops around the state. You can find the article here. In the article a number of Extension agents and producers discuss the impacts of the late cold snap on fruit…
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The South Atlantic LLC announced a new online module on climate change impacts on grasslands and forests late in March. This module goes along with another one on climate change science that was produced earlier. You can read the official release here and visit the website with the two modules at https://www.fs.usda.gov/ccrc/climate-basics/education. Don’t forget that there…
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The hurricane prediction group at Colorado State University released their April prediction for the upcoming Atlantic tropical season. You can read all the gory statistical details at https://hurricane.atmos.colostate.edu/Forecasts/2015/apr2015/appdr2015.pdf. Here are the predicted numbers, with average values in parentheses: ATLANTIC BASIN SEASONAL HURRICANE FORECAST FOR 2015 Forecast Parameter and 1981-2010 Median (in parentheses) Issue Date 9…