Synergy use of MODIS, Cloudsat and CALIPSO for improved retrieval of liquid water cloud microphysical

Yuichiro Hagihara, Hajime Okamoto, Takashi Y. Nakajimab

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

In this paper, we retrieved microphysics of water clouds from MODIS on Aqua combined with the information of cloud top height from CloudSat and CALIPSO. This approach was different from the conventional method that used cloud top height from object analysis data. For the determination of the cloud top height, we developed radar-lidar fusion cloud mask scheme based on the one for ground observation described by Okamoto et al. [I]. The cloud mask from MODIS standard product was also evaluated against CloudSat and CALIPSO data. Then, the improved version of the algorithm developed by Nakajima and Nakajima [2] and Kawamoto et al. [3] was applied to MODIS with the cloud top height derived from CloudSat and CALIPSO instead of that derived from NCEP/NCAR reanalysis data and global analysis of liquid water cloud properties was carried out from the MODIS over A-train orbit path. We studied the statistical differences in cloud top height and microphysics between the results by the synergy approach and the conventional one. We found the results of the conventional methods largely affected by the contamination of ice clouds and this also lead to the overestimation of cloud top height as well as effective radius. Optical thickness agreed in both methods.

Original languageEnglish
Pages (from-to)259-262
Number of pages4
JournalAIP Conference Proceedings
Volume1100
DOIs
Publication statusPublished - May 25 2009
Externally publishedYes
EventInternational Radiation Symposium, IRS 2008 - Foz do Iguacu, Brazil
Duration: Aug 3 2008Aug 8 2008

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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