Global surface-based sun photometer network for long-term observations of column aerosol optical properties: Intercomparison of aerosol optical depth

作者：Kim Sang Woo^*; Yoon Soon Chang; Dutton Ellsworth G; Kim Jiyoung; Wehrli Christoph; Holben Brent N

来源：Aerosol Science and Technology, 2008, 42(1): 1-9.

DOI：10.1080/02786820701699743

Comparisons of aerosol optical depths (AODs) determined from several types of Sun photometers operating side by side as part of four different networks (GAW PFR, AERONET, SKYNET, and NOAA/ESRL aerosol monitoring programs) were made at 6 different environmental stations to evaluate the different types of current state-of-the-art instruments under different aerosol loading conditions. A comparison between AERONET CIMEL and GAW PFR at a high altitude calibration site, Mauna Loa, shows an excellent agreement with 0.001 bias for 500 nm AOD. AODs obtained from direct Sun-pointing instruments are within 0.01 bias, though these results are similar to or slightly larger than those given in previous short-term intensive studies. These results suggest that well-maintained networks of direct Sun-pointing instruments developed by different companies/institutions can provide quality-assured AOD data across the globe to the aerosol-climate research community. The poorer agreement between a hemispherical field-of-view (FOV) MFRSR and the finite FOV Sun-pointing instrument is found to be due to uncertainty in the angular characterization of the MFRSR optics.

• 出版日期2008-1
• 单位中国地震局