Radiative efficiencies and global warming potentials of agricultural fumigants

Abstract A rounded assessment of the environmental impacts fumigants used within agricultural sector must consider potential climate their release into atmosphere. Within policy settings, 100-year Global Warming Potential (GWP 100 ) is most commonly metric. While GWP values are available for widely fumigant sulfuryl fluoride, no estimates 4 alternative fumigants: ethyl formate, cyanogen, hydrogen cyanide and phosphine. Existing laboratory measurements infrared spectra reaction rate coefficients these gases to produce new radiative efficiencies atmospheric lifetimes, first other emission metrics. Although uncertainties considerable, estimated be more than 2% value fluoride. These will enable informed impact use fumigants, which account differing usage rates achieve same efficacy.