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Cloudless aerosol forcing efficiency in the UV region from AERONET and WOUDC databases
Author(s) -
García O. E.,
Díaz A. M.,
Expósito F. J.,
Díaz J. P.,
Gröbner J.,
Fioletov V. E.
Publication year - 2006
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2006gl026794
Subject(s) - aeronet , aerosol , environmental science , forcing (mathematics) , atmospheric sciences , climatology , meteorology , geography , physics , geology
Aerosol Robotic Network (AERONET) and World Ozone and Ultraviolet Data Center (WOUDC) combined information have been used to calculate the aerosol forcing efficiency under cloud‐free conditions, ΔF e , in the ultraviolet region (290–325 nm) at surface. The stations of these global networks have been collocated spatial and temporarily, resulting three common stations: two in Canada, representative of background conditions (Bratt's Lake and Saturna Island) and one in Italy, characterized by rural and industrial aerosols (Ispra). The monthly ΔF e was calculated during spring and summer time in the common period, 1999 to 2004, and for the Cimel wavelengths 500, 440, 380 and 340 nm. The ΔF e values range from −0.65 ± 0.07 Wm −2 / τ 500 to −0.36 ± 0.03 Wm −2 / τ 340 for Ispra, whereas for the Canadian observatories the interval varies from −2.07 ± 0.62 Wm −2 / τ 500 to −0.16 ± 0.23 Wm −2 / τ 340 . No significant annual or seasonal trends for the ΔF e were found in any station.