Moist synoptic transport of CO2 along the mid-latitude storm track
Parazoo, N. C.
Denning, A. S.
Berry, J. A.
Wolf, Aaron S.
Randall, D. A.
Kawa, S. Randolph
Doney, Scott C.
MetadataShow full item record
KeywordAtmospheric transport; Carbon cycle; Inversion; Isentropic coordinates; Synoptic weather; Tracer modeling
Atmospheric mixing ratios of CO2 are strongly seasonal in the Arctic due to mid-latitude transport. Here we analyze the seasonal influence of moist synoptic storms by diagnosing CO2 transport from a global model on moist isentropes (to represent parcel trajectories through stormtracks) and parsing transport into eddy and mean components. During winter when northern plants respire, warm moist air, high in CO2, is swept poleward into the polar vortex, while cold dry air, low in CO2, that had been transported into the polar vortex earlier in the year is swept equatorward. Eddies reduce seasonality in mid-latitudes by ∼50% of NEE (∼100% of fossil fuel) while amplifying seasonality at high latitudes. Transport along stormtracks is correlated with rising, moist, cloudy air, which systematically hides this CO2 transport from satellites. We recommend that (1) regional inversions carefully account for meridional transport and (2) inversion models represent moist and frontal processes with high fidelity.
Author Posting. © American Geophysical Union, 2011. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 38 (2011): L09804, doi:10.1029/2011GL047238.
Showing items related by title, author, creator and subject.
Harden, Benjamin E.; Straneo, Fiamma; Sutherland, David A. (John Wiley & Sons, 2014-12-23)We present a year-round assessment of the hydrographic variability within the East Greenland Coastal Current on the Greenland shelf from five synoptic crossings and 4 years of moored hydrographic data. From the five synoptic ...
On the calculation of wind stress curl over open ocean areas from synoptic meteorological data with application to time dependent ocean circulation Welch, Christopher Slocombe (Woods Hole Oceanographic Institution, 1972-02)The method used by N. P. Fofonoff for estimating wind stress curl from surface atmospheric pressure maps is developed for use with the National Meterological Center analysis grid. A formula is developed relating the wind ...
Willett, Hurd C. (Massachusetts Institute of Technology, 1930)This study of fog formations at Hadley Airport was carried out during the winter of 1928-29 with the intent of finding out how far a careful scrutiny of local records might assist in explaining and forecasting local fogs. ...