Journal Article FZJ-2021-04871

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png
Global Distribution of the Phase State and Mixing Times within Secondary Organic Aerosol Particles in the Troposphere Based on Room-Temperature Viscosity Measurements

 ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;

2021
ACS Publications Washington, DC

ACS earth and space chemistry 5(12), 3458- () [10.1021/acsearthspacechem.1c00296]

This record in other databases:  

Please use a persistent id in citations: doi:  doi:

Abstract: Information on the global distributions of secondary organic aerosol (SOA) phase state and mixing times within SOA is needed to predict the impact of SOA on air quality, climate, and atmospheric chemistry; nevertheless, such information is rare. In this study, we developed parameterizations for viscosity as a function of relative humidity (RH) and temperature based on room-temperature viscosity data for simulated pine tree SOA and toluene SOA. The viscosity parameterizations were then used together with tropospheric RH and temperature fields to predict the SOA phase state and mixing times of water and organic molecules within SOA in the troposphere for 200 nm particles. Based on our results, the glassy state can often occur, and the mixing times of water can often exceed 1 h within SOA at altitudes >6 km. Furthermore, the mixing times of organic molecules within SOA can often exceed 1 h throughout most of the free troposphere (i.e., ≳1 km in altitude). In most of the planetary boundary layer (i.e., ≲1 km in altitude), the glassy state is not important, and the mixing times of water and organic molecules are less than 1 h. Our results are qualitatively consistent with the results from Shiraiwa et al. (Nat. Commun., 2017), although there are quantitative differences. Additional studies are needed to better understand the reasons for these differences.

Classification:

Note: Bitte Post-print ergänzen

Contributing Institute(s):
  1. Troposphäre (IEK-8)
Research Program(s):
  1. 2111 - Air Quality (POF4-211) (POF4-211)

Appears in the scientific report 2021
Database coverage:
Medline ; OpenAccess ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
Click to display QR Code for this record

The record appears in these collections:
Document types > Articles > Journal Article
Institute Collections > ICE > ICE-3
Workflow collections > Public records
IEK > IEK-8
Publications database
Open Access

 Record created 2021-12-02, last modified 2024-09-18


OpenAccess:
Download fulltext PDF
(additional files)
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)