A new type of analysis suggests that droughts in Ohio were more severe from 2000 to 2019 than standard measurements have suggested.
Researchers at The Ohio State University developed impacts-based thresholds for drought in Ohio, looking specifically at how corn yield and streamflow were affected by various drought indicators, such as notable changes in soil moisture, crops, and even livestock losses in the state.
The problem with the USDM is that it uses fixed drought thresholds, or guidelines that use the same parameters to measure changes in all seasons and climate regions of the country. Unfortunately, this one-size-fits-all approach can cause monitoring plans to inaccurately gauge local weather conditions and how they impact those in certain communities, Quiring said.
Identifying agricultural drought thresholds that are specific to Ohio is important, said Quiring. Because the impacts of drought can vary from region to region, using the same drought thresholds in California as in Ohio is absurd, he said. Additionally, the types of drought that occur can differ. Ohio, for example, in particular is prone to"flash droughts" -- shortages caused by warm weather that can happen quickly over a few days or weeks.
What's more, the researchers' impacts-based method of drought monitoring also takes into account how climate change can worsen flash drought events.
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