Pam Knox

  • One of the big questions in determining the impacts of changing climate on crops is the effect called “carbon dioxide fertilization”.  In test plots under higher CO2 levels, some crops do better with more carbon dioxide, leading to higher yields.  The key is that it depends…on crop, water availability, and temperature.  Some crops like rain-fed…

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  • Dairy farms adapt to heavier rainfall

    The Detroit Free Press published an article this week describing the impacts of heavy rainfall on watersheds where dairies are located.  Many of these dairies apply their animal waste to the land to return nutrients to the soil and reduce waste going to landfills.  However, when heavy rains hit, if the manure has not had…

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  • Two studies published this week highlight the impact that volcanic eruptions may have on climate, both on short (a few years) and long (millions of years) time scales. BBC posted an article on some recent research by Dutch scientists suggesting that an eruption of Mt. Chichon in Mexico in the 6th century can be linked…

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  • Creative Loafing, an Atlanta weekly newspaper, published a long story this week about the impacts of severe and extreme weather, like flash flooding and heat waves, on cities.  In particular, vulnerable populations like the elderly, children, and lower socioeconomic class folk are especially likely to suffer from this weather, since they often live in areas…

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  • WunderBlog photos for Earth Day

    April 22 was the 47th annual Earth Day, a celebration of the good Earth and a reminder that we need to take care of it.  The blog at Weather Underground commemorated the day with a collection of their favorite photos from the past year here.

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  • Another dry week

    The latest 7-day QPF map shows that the next week should be mostly dry across the Southeast.  What little rain does come will hold off until the second half of the week but is not expected to be much.  This means that next week’s Drought Monitor is likely to show an expansion of abnormally dry…

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  • NOAA released their latest seasonal outlooks this week.  You can find them all at https://www.cpc.noaa.gov/products/predictions/long_range/seasonal.php?lead=13.  A sampling of them are shown below.  They indicate that El Niño impacts are still likely for the next few months.  In summer a band of above-normal precipitation is most likely related to the more active tropical season we are likely…

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