The Atmospheric Life Cycle of Pollen

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Event Details
  • Date/Time:
    • Thursday October 3, 2019
      11:00 am - 11:50 am
  • Location: Ford Environmental, Science & Technology (ES&T) Building, Rm. L1205, 11am
  • Phone:
  • URL:
  • Email:
  • Fee(s):
    Free
  • Extras:
Contact

Natasha Lawson

Summaries

Summary Sentence: A seminar by Dr. Allison Steiner, School of Earth and Atmospheric Sciences

Full Summary: No summary paragraph submitted.

Media
  • Allison Steiner Allison Steiner
    (image/jpeg)

The School of Earth and Atmospheric Sciences Presents Dr. Allison Steiner, University of Michigan

The Atmospheric Life Cycle of Pollen

Anemophilous, or wind-driven, pollen is released from vegetation in the mid-latitudes and uses the atmosphere to disperse genetic material.  The release of pollen is closely tied to atmospheric conditions such as temperature, precipitation, humidity and wind, and as a result, is susceptible to the effects of climate change and phenological shifts in vegetation.  
 
Pollen grains generally have a short residence time in the atmosphere, but pollen can rupture in the atmosphere creating smaller fragments known as sub-pollen particles (SPP), which can change the size distribution of particles and potentially contribute to organic aerosols.  SPP are known to act as cloud condensation nuclei and ice nucleating particles, thereby having the ability to affect the formation of clouds and affect precipitation and the radiative budget.  
 
In this talk, I will discuss a new comprehensive pollen emissions model for use in weather and climate models and the impact of these emissions on regional precipitation.  I will also connect existing physical and chemical observations to determine when and where pollen may be important for atmospheric processes, and how it may change under future climate warming.

Additional Information

In Campus Calendar
Yes
Groups

EAS

Invited Audience
Faculty/Staff, Postdoc, Graduate students, Undergraduate students
Categories
Seminar/Lecture/Colloquium
Keywords
EAS Seminar
Status
  • Created By: nlawson3
  • Workflow Status: Published
  • Created On: Aug 8, 2019 - 1:28pm
  • Last Updated: Sep 20, 2019 - 10:16am