Climatology of noctilucent cloud radii and occurrence frequency using SCIAMACHY
Climatology of noctilucent cloud radii and occurrence frequency using SCIAMACHY
复制标题
使用 SCIAMACHY 进行夜光云半径和出现频率的气候学研究
DOI：
10.1016/j.jastp.2008.10.015
复制
发表时间：
2009
影响因子：
1.9
通讯作者：
G. Baumgarten
中科院分区：
文献类型：
--
作者：
C. Robert;C. Savigny;J. Burrows;G. Baumgarten
本文基于2002 - 2007年的SCIAMACHY测量数据，介绍了夜光云（NLC）的发生率（北半球和南半球）和粒径（北半球）的气气学。年际间的发生率分析显示，尽管在此期间太阳活动减少，但北半球没有出现这种趋势。当σ=22nm时，高斯粒径分布的平均NLC粒子半径为68.0±11.4nm。颗粒大小随纬度的增加而增加，对于大于75°的纬度，其梯度可达2纳米/度。夏马奇观察到，在过去5年里，在70°以上的纬度地区，NLC的平均粒径有所增加，这可能与太阳活动减少有关。在给定纬度带内，季节平均粒径的年际变率为±2nm。并给出了反演对颗粒形状和假设宽度下粒径分布敏感性的结果。
We present a climatology of noctilucent cloud (NLC) occurrence rate (northern and southern hemisphere) and particle size (northern hemisphere) based on SCIAMACHY measurements between 2002 and 2007. An interannual analysis of occurrence rates shows no trend in the northern hemisphere despite the decreasing solar activity during that period. The mean NLC particle radius for a Gaussian particle size distribution with σ=22nm is 68.0±11.4nm. There is an increase of the particle size with latitude, with a gradient as large as 2nm/deg for latitudes larger than 75∘. SCIAMACHY observes an increase of mean NLC particle size during the last 5 years at latitudes higher than 70∘, which might be linked to the decrease in solar activity. The interannual variability of the seasonally averaged particle size is ±2nm in a given latitude band. Results concerning the sensitivity of the retrieval to the particle shape and particle size distribution assumed width are also presented.
DOI：
10.1016/j.jastp.2007.07.006
发表时间：
2007
影响因子：
1.9
作者：
F.-J. Lübken;U. Berger
通讯作者：
U. Berger