Accession Number:

ADA629810

Title:

The Role of Organic Sea Salt Aerosol in Cloud Processing

Descriptive Note:

Corporate Author:

PRINCETON UNIV NJ DEPT OF CHEMICAL ENGINEERING

Personal Author(s):

Report Date:

1999-09-30

Pagination or Media Count:

7.0

Abstract:

LONG-TERM GOAL. My long term goal is to quantify the role of organic compounds in sea salt aerosol. This project studies the effect of organic compounds on the uptake of water by sea salt aerosol particles. Studying the chemical composition of those particles provides important information about their behavior in the atmosphere. OBJECTIVES. I want to know what role the presence of organic species may play in the hygroscopicity of particles. In particular, I want to know how the organic composition of particles affects their ability to serve as cloud condensation nuclei. APPROACH. We have studied the empirical relationship between the organic composition of particles and their size. We are now constructing a thermodynamic model that accounts for the effect of organics on the uptake of water by particles. We will also develop an enhanced method of measuring the organic fraction of particles, in order to collect airborne measurements of the organic fraction of particles.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry
  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE