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Determination of the Broadband Aerosol Optical Depth Baseline and comparison with sunphotometer data

机译：宽带气溶胶光学深度基线的确定并与日光计数据进行比较

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The Broadband Aerosol Optical Depth (BAOD) was calculated for Camagüey Actinometric al Station (EAC) using the methodol ogy described by Gueymard in 1998 . The main source of data used was the Solar Radiation Database of EAC for the 1981 - 2013 period. The BAOD calculation was performed for observations with total cloud coverage equal or less than one tenth of sky covered by clouds (Clear Sky, HCD) and for actinometric al observations with no clouds in the line of sight of the sun . To determine the BAOD B aseline the periods of El Chichón and Mt. Pinatubo volcanic eruptions were eliminated. The average value of BAOD for the entire period under aerosol background conditions is 0.115 (± 0.075) with a decreasing trend of . .20 × 10 - 6 day - 1 . BAOD values were compa red with time coincident spectral AOD values obtained from a nearby sunphotometer. The highest correlation coefficient values were obtained for the wavelengths of 500 and 675 nm, with an R 2 = 0.45 for both cases.
机译：使用Gueymard在1998年描述的方法，计算了Camagüey测光站（EAC）的宽带气溶胶光学深度（BAOD）。使用的主要数据来源是EAC 1981年至2013年期间的太阳辐射数据库。对于总云量等于或小于被云层覆盖的天空（晴空，HCD）的观测值和对于太阳视线中无云量的光度法观测值，执行BAOD计算。为了确定BAOD B aseline的时间，请选择ElChichón和Mt.皮纳图博火山喷发已消除。在气溶胶背景条件下，整个时期的BAOD平均值为0.115（±0.075），呈下降趋势。 .20×10-6天-1。 BAOD值与从附近的日光光度计获得的时间一致光谱AOD值进行比较。对于500和675 nm的波长，获得最高的相关系数值，两种情况下的R 2 = 0.45。

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