Mathematics – Logic
Scientific paper
Nov 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.2675b&link_type=abstract
Geophysical Research Letters, Volume 24, Issue 21, p. 2675-2678
Mathematics
Logic
32
Oceanography: Biological And Chemical: Gases, Atmospheric Composition And Structure: Air/Sea Constituent Fluxes, Oceanography: Biological And Chemical: Biogeochemical Cycles
Scientific paper
In this paper we show evidence that isoprene emission from the oceans is strongly seasonally dependent and is correlated with the chlorophyll content of the water from measurements in the North Sea and Southern Ocean. We estimate the seasonally averaged flux of isoprene to the atmosphere to be 1.7×107moleculescm-2s-1, which may be significant for atmospheric chemistry in locations remote from land as it is the only known source of atmospheric isoprene in these regions. We observe a strong seasonal cycle of several other NMHCs in seawater at high latitudes, with a maximum in summer. This will distort current estimates of the annual marine flux of NMHCs to the atmosphere which may need to be reduced by up to an order of magnitude to account for lower emissions in winter.
Broadgate Wendy J.
Liss Peter S.
Penkett Stuart A.
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