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Characteristic aerosol optical depths during the Harmattan Season on sub‐Sahara Africa
Author(s) -
Pinker Rachel T.,
Idemudia G.,
Aro T. O.
Publication year - 1994
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 - 10.1029/93gl03547
Subject(s) - aerosol , sun photometer , photometer , environmental science , atmospheric sciences , optical depth , climatology , geology , meteorology , geography , physics , optics
Aerosol optical depths were derived from sun photometer measurements in three narrow bands centered at 500, 675 and 875 nm, taken at Ilorin, Nigeria, located in sub‐Saharan Africa. Selected results will be presented on the diurnal, seasonal, and interannual variability of spectral aerosol optical depth for two Harmattan seasons, during 1987–1989. At 500 nm values between 0.9–1.6 were quite common while the averages were between 1–1.2.