Available Datasets
Global Inverse Visibility Data [.tar]

This is a global dataset of monthly inverse visibility (1/Vis) processed originally from the NOAA Integrated Surface Database (ISD).

Comprehensive screening of the ISD data is implemented, including removing relatively clean and unresolved cases, and separating inherent discontinuities. Some stations might contain more than 1 time series as a result of separation.

More details in processing and evaluation could be found in Li et al. (2016).

Reference: Li, C., Martin, R. V., Boys, B. L., van Donkelaar, A., and Ruzzante, S.: Evaluation and application of multi-decadal visibility data for trend analysis of atmospheric haze, Atmos. Chem. Phys., 16, 2435-2457, doi:10.5194/acp-16-2435-2016, 2016. [Link]

Please contact Chi Li (chi.li@dal.ca) for further information