Award Abstract # 2024178
Collaborative Research: Ionic Solutions and the Partitioning of Oxygenated Organic Compounds in the Troposphere

NSF Org: AGS
Division of Atmospheric and Geospace Sciences
Recipient: UNIVERSITY OF MARYLAND BALTIMORE COUNTY
Initial Amendment Date: June 4, 2020
Latest Amendment Date: March 10, 2023
Award Number: 2024178
Award Instrument: Standard Grant
Program Manager: Sylvia Edgerton
sedgerto@nsf.gov
 (703)292-8522
AGS
 Division of Atmospheric and Geospace Sciences
GEO
 Directorate for Geosciences
Start Date: July 1, 2020
End Date: June 30, 2025 (Estimated)
Total Intended Award Amount: $355,745.00
Total Awarded Amount to Date: $410,317.00
Funds Obligated to Date: FY 2020 = $355,745.00
FY 2023 = $54,572.00
History of Investigator:
  • Christopher Hennigan (Principal Investigator)
    hennigan@umbc.edu
Recipient Sponsored Research Office: University of Maryland Baltimore County
1000 HILLTOP CIR
BALTIMORE
MD  US  21250-0001
(410)455-3140
Sponsor Congressional District: 07
Primary Place of Performance: University of Maryland Baltimore County
1000 Hilltop Circle
Baltimore
MD  US  21250-0001
Primary Place of Performance
Congressional District:
07
Unique Entity Identifier (UEI): RNKYWXURFRL5
Parent UEI:
NSF Program(s): SPECIAL EMPHASIS PROGRAM,
Atmospheric Chemistry
Primary Program Source: 01002324DB NSF RESEARCH & RELATED ACTIVIT
01002021DB NSF RESEARCH & RELATED ACTIVIT
Program Reference Code(s): 019Z, 102Z, 1524, 4444
Program Element Code(s): 061900, 152400
Award Agency Code: 4900
Fund Agency Code: 4900
Assistance Listing Number(s): 47.050

ABSTRACT

This project includes laboratory experiments and field measurements to help build a quantitative understanding of influence of salts and pH on the partitioning of atmospheric organics between the aerosol and gas phase. The goal of the project is to develop parameterizations suitable for implementation in atmospheric models to improve the prediction of the atmospheric particulate matter burden, and subsequent impacts related to air quality, direct and indirect radiative forcing and the deposition of reactive carbon.

The proposed research will address the following questions: (1) How does partitioning of atmospheric organic gases change as a function of salt composition, concentration and droplet pH in different environments? and (2) How do changes in gas-to-water partitioning alter the budget and lifetime of reactive carbon compounds in the atmosphere? This effort will advance the understanding of fundamental chemistry through the deployment of mist chambers to humid and arid regions of the U.S. to systematically study inorganic salt influences on the partitioning of ambient water-soluble organic gases in contrasting environments. The project incorporates a creative method for communicating scientific findings through the participation of art students, who will design insightful content about air quality and climate change for those outside the scientific community.

This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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Pratap, Vikram and Carlton, Annmarie G. and Christiansen, Amy E. and Hennigan, Christopher J. "Partitioning of Ambient Organic Gases to Inorganic Salt Solutions: Influence of Salt Identity, Ionic Strength, and pH" Geophysical Research Letters , v.48 , 2021 https://doi.org/10.1029/2021GL095247 Citation Details

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