Environ Toxicol Chem. 2014 Jun;33(6):1283-93. doi: 10.1002/etc.2550. Epub 2014 Apr 4.

Pesticides in Mississippi air and rain: a comparison between 1995 and 2007.

Atrazine, metolachlor, and propanil were detected in ≥50% of the air and rain samples in both years. Glyphosate and its degradation product, aminomethyl-phosphonic acid (AMPA), were detected in ≥75% of air and rain samples in 2007 but were not measured in 1995. The 1995 seasonal wet depositional flux was dominated by methyl parathion (88%) and was >4.5 times the 2007 flux. Total herbicide flux in 2007 was slightly greater than in 1995 and was dominated by glyphosate.

http://www.ncbi.nlm.nih.gov/pubmed/24549493
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Arty turns 10 this summer.