Calendar Event Details
Huisheng Bian
Affiliation: GESTAR/NASA GSFC, Code 614
Event Date: Tuesday, December 18, 2018
Location: Building 33, G133
Time: 11:00 AM
Observationally constrained analysis of aerosols in the marine atmosphere
NASA EV2 Atmospheric Tomography Mission (ATom) provided rich aerosol measurements over global oceans. In this talk, I will address the GEOS aerosol simulations constrained by ATom measurements, as well as measurements from MODIS and AERONET Marine Aerosol Network (MAN). This study covers remote regions over the Pacific, Atlantic, and Southern Oceans from near surface to ~12 km altitude and covers both summer and winter seasons. I will first present a systematic and comprehensive global sea salt study. Important atmospheric sea salt fields, e.g. mass mixing ratio, vertical distribution, size distribution, and marine aerosol AOD, are examined. Sea salt aerosol relationship to relative humidity and the simulation of emission, dry deposition, sedimentation, and large scale and convective wet deposition processes are explored to explain the observed sea salt fields and to reveal potential directions for model improvement. I will then discuss current potential problems in GEOS aerosol simulation revealed by ATom measurements from process levels, such as emission and wet deposition.
Posted or updated: Sunday, December 16, 2018
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