OBSERVATION OF A BLUE SUN OVER NEW-MEXICO, USA, ON 19 APRIL 1991

被引：11

作者：

HORVATH, H ^{[1
]}

METZIG, G ^{[1
]}

PREINING, O ^{[1
]}

PUESCHEL, RF ^{[1
]}

机构：

[1] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,AEROSOLPHYS & FILTERTECHN LAB1,D-76021 KARLSRUHE,GERMANY

来源：

ATMOSPHERIC ENVIRONMENT | 1994年 / 28卷 / 04期

关键词：

BLUE SUN; SUNS COLOR; UNUSUAL OPTICAL PHENOMENA; ATMOSPHERIC OPTICS; SPECTRAL TRANSMISSION;

D O I：

10.1016/1352-2310(94)90039-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A blue sun was observed through a dissipating cloud during a NASA DC-8 mission flight and a color photograph was taken. Measurements with an optical particle counter yield a size distribution which can be approximated by a bimodel lognormal distribution. The modal diameters of both modes are significantly larger than the background aerosol measured in the cloud-free troposphere on the same flight. Calculated transmission of sunlight through the cloud resulted in a slightly higher extinction in the red than in the blue. The long path of sight through the cloud resulted in a transmission of 10(4)-10(-6) which enhances the color effect of the cloud particles. The observation and interpretation agree with reports on colored suns in the literature.

引用

页码：621 / 630

页数：10

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