Ice cloud microphysical properties in tropical Pacific regions derived from CloudSat and CALIPSO measurements

Naoya Takahashi, Tadahiro Hayasaka, Hajime Okamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We revealed the difference in tropical ice cloud microphysical properties between the western Pacific (WP) and the eastern Pacific (EP), based on satellite retrievals. Vertical profile of effective particle radius of ice cloud (re) was estimated from active sensors on board CloudSat and CALIPSO satellites. In this study, we focused only on ice cloud which is defined as clouds with the cloud top temperature lower than 0°C. To investigate the relationship between cloud optical properties and cloud vertical structures, these ice clouds were classified into five types based on cloud optical thickness values. Compared the vertical profile of re in WP with that in the EP, re around the freezing level within convective cloud in EP slightly larger than that in WP. This analysis also shows that re of optically thick cloud is larger than that of optically thin cloud. The difference in re may be caused by differences in moisture convergence, upward motion, aerosols.

Original languageEnglish
Title of host publicationRadiation Processes in the Atmosphere and Ocean, IRS 2016
Subtitle of host publicationProceedings of the International Radiation Symposium (IRC/IAMAS)
EditorsWerner Schmutz, Roger Davies, Luca Egli
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414785
DOIs
Publication statusPublished - Feb 22 2017
EventInternational Radiation Symposium 2016: Radiation Processes in the Atmosphere and Ocean, IRS 2016 - Auckland, New Zealand
Duration: Apr 16 2016Apr 22 2016

Publication series

NameAIP Conference Proceedings
Volume1810
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Radiation Symposium 2016: Radiation Processes in the Atmosphere and Ocean, IRS 2016
CountryNew Zealand
CityAuckland
Period4/16/164/22/16

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Takahashi, N., Hayasaka, T., & Okamoto, H. (2017). Ice cloud microphysical properties in tropical Pacific regions derived from CloudSat and CALIPSO measurements. In W. Schmutz, R. Davies, & L. Egli (Eds.), Radiation Processes in the Atmosphere and Ocean, IRS 2016: Proceedings of the International Radiation Symposium (IRC/IAMAS) [070008] (AIP Conference Proceedings; Vol. 1810). American Institute of Physics Inc.. https://doi.org/10.1063/1.4975529