Physics
Scientific paper
Jun 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3611805a&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 11, CiteID L11805
Physics
2
Atmospheric Processes: Precipitation (1854), Hydrology: Human Impacts, Hydrology: Anthropogenic Effects (4802, 4902), Geochemistry: Radiogenic Isotope Geochemistry, Geochemistry: Composition Of The Hydrosphere
Scientific paper
We here present the most extensive data set on the distribution of 127I and 129I in precipitation (rain and snow) covering the period 2000-2006 and European latitudes 55°N-68°N. Our results indicate a wide variation in the concentrations and fluxes of the two isotopes associated with generally higher values at near coastal sites compared to the inland ones. Total wet-related annual deposition of 127I and 129I on Sweden and Denmark is estimated at about 1.2 × 109 g and 60 g respectively. The average annual 129I wet deposition accounts for <1% and <0.05% of the total annual gaseous and liquid, respectively, discharges from the Sellafiled and La Hague Facilities. The 127I annual wet deposition represents <1% of the estimated global oceanic iodine flux. Air mass trajectories suggest that events of enhanced 129I in precipitation are closely related to southwesterly weather fronts from regions of elevated concentrations.
Aldahan Ala A.
Hou X. L.
Persson Simeon
Possnert Göran
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