Rupturing of Biological Spores As a Source of Secondary Particles in Amazonia
Journal Article
·
· Environmental Science and Technology
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Xiamen Univ., Xiamen (China)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Federal Univ. of Sao Paulo, Sao Paulo (Brazil)
- Univ. of Sao Paulo, Sao Paulo (Brazil); Univ. Blaise Pascal, Clermont-Ferrand (France)
- National Institute of Research in Amazonia, Manaus (Brazil)
- Univ. of Sao Paulo, Sao Paulo (Brazil)
Airborne biological particles, such as fungal spores and pollen, are ubiquitous in the Earth's atmosphere and may influence the atmospheric environment and climate, impacting air quality, cloud formation, and the Earth's radiation budget. The atmospheric transformations of airborne biological spores at elevated relative humidity remain poorly understood and their climatic role is uncertain. Using an environmental scanning electron microscope (ESEM), we observed rupturing of Amazonian fungal spores and subsequent release of submicrometer size fragments after exposure to high humidity. We find that fungal fragments contain elements of inorganic salts (e.g., Na and Cl). They are hygroscopic in nature with a growth factor up to 2.3 at 96% relative humidity, thus they may potentially influence cloud formation. Due to their hygroscopic growth, light scattering cross sections of the fragments are enhanced by up to a factor of 10. Moreover, rupturing of fungal spores at high humidity may explain the bursting events of new particle formation in Amazonia.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1377591
- Alternate ID(s):
- OSTI ID: 1340765
- Journal Information:
- Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 22 Vol. 50; ISSN 0013-936X
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Rupturing of Biological Spores As a Source of Secondary Particles in Amazonia
Simulating the Transport and Rupture of Pollen in the Atmosphere
Journal Article
·
Mon Nov 14 23:00:00 EST 2016
· Environmental Science and Technology
·
OSTI ID:1340765
Simulating the Transport and Rupture of Pollen in the Atmosphere
Journal Article
·
Sun Mar 26 20:00:00 EDT 2023
· Journal of Advances in Modeling Earth Systems
·
OSTI ID:1969122