 |
| Titel |
Revisiting the estimation of the North Sea air-sea flux of CO2 in 2001/02 |
| VerfasserIn |
Maybritt Meyer, Johannes Paetsch, Beate Geyer, Helmuth Thomas |
| Konferenz |
EGU General Assembly 2017
|
| Medientyp |
Artikel
|
| Sprache |
en
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250144613
|
| Publikation (Nr.) |
 EGU/EGU2017-8460.pdf |
|
|
|
|
|
| Zusammenfassung |
| Based on seasonal observations of pCO2 and 6-hourly wind data derived from ERA-40
reanalysis data Thomas et al. (2004) estimated the annual North Sea net uptake of CO2 for
the years 2001/02. The wind data were provided by the ECMWF with a spatial resolution of
1.125˚ (ECMWF, 2005). An updated estimate has now been achieved by using the more
appropriate wind data set coastDat2 (Geyer, 2014) resulting from atmospheric hourly
hindcast for Europe and the North Atlantic using COSMO-CLM version 4.8_clm_11
with spectral nudging from 1948-2015. The model uses a grid point distance of
0.22 degrees with an extension of about 68˚ W to 82˚ E, 25.6˚ N to 81.4˚
N.
It could be shown that coastDat2 rather than ERA-40 data fit to observed hourly
observations at the German Weather Service station Helgoland (54.175˚ N, 7.892˚ E). In
most cases the coastDat2 values are larger than the ERA-40 values. The comparison of North
Sea wide CO2 uptake yields 1.3 for ERA-40 and 1.8 mol CO2 m−2 a−1 for coastDat2 wind
fields.
References
Geyer, B., 2014. Earth System Science Data, 6(1): 147-164. Doi:10.5194/essd-6-147-2014.
ECMWF, 2005. http://www.ecmwf.int
Thomas, H., Bozec, Y., Elkalay, K., de Baar, H.J.W., 2004. Science, 304: 1005-1008. |
|
|
|
|
|
|