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首页> 外文期刊>Geophysical Research Letters >Aerosol optical depth over Lauder, New Zealand
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Aerosol optical depth over Lauder, New Zealand

机译:新西兰劳德的气溶胶光学深度

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摘要

Aerosol optical depths (AOD) measured over Lauder in Central Otago, New Zealand in 1996-1997, and continuously since 1999, are amongst the lowest observed worldwide. The Lauder measurements show a seasonal cycle in AOD with a winter minimum and summer local maximum, and there is a springtime peak that is probably due to biomass burning. The wavelength dependence of AOD suggests a relatively stable size distribution but smaller average particle size in spring. Lack of correlation with surface humidity below 90% RH, in both AOD and wavelength dependence, may constrain the likely composition of the aerosol. There was a downward but insignificant trend in mean AOD over the measurement period.
机译:1996年至1997年期间,在新西兰中奥塔哥地区的劳德上空测量的气溶胶光学深度(AOD),并且自1999年以来一直连续,是全世界观测到的最低深度之一。 Lauder的测量结果显示AOD的季节周期具有冬季的最小值和夏季的局部最大值,并且春季峰值可能是由于生物质燃烧引起的。 AOD的波长依赖性表明,春季的粒径分布相对稳定,但平均粒径较小。在AOD和波长相关性方面,与低于90%RH的表面湿度缺乏关联可能会限制气溶胶的可能组成。在测量期间,平均AOD呈下降趋势,但微不足道。

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