Begur-Pals site (41,58ºN, 3,14ºE, Catalonia,
Spain)
is weekly sampled for CO2 and other GHG (CH4, CO, N2O,
SF6) since January 2000. This CO2 serial data shows at
the middle of each summer a sudden increase and decrease of the CO2
peak. It is a process that can be either attributed to a highest transpiration
rate than ecosystem production due to the lack of summer precipitation, to biomass
burning from Mediterranean forest fires, to tourist activities in the coast, or
to CO2 pumping from waters in the Western Mediterranean sea (according
to wind backtrajectories). A sampling strategy using sites with high towers
with continuous measurements has been developed. Sites are placed at the vortexes
of a rhombus: two extremes are continental sites in the center of the Ebro’s
watershed and a marine site is located in the Menorca Island.
The other two are high towers in the Catalonian coast.
Author: J-A. Morguí, X. Rodó, A. Font, E. Martí, et al (jamorgui at pcb dot ub dot es)
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