[Enviro-lunch] Envirolunch Seminar this Thursday (11/19/2020) by Dr. Adeyemi Adebiyi

[Manisha Dolui]

[cid:be299f43-6d5a-4b08-a0f2-e599746454b5]

Hello all,

Please join us this Thursday (11/19/2020 from 12 - 1 PM, PST) for our seminar speaker Dr. Adeyemi Adebiyi ( UC President Post-doctoral Fellow at the Department of Atmospheric and Oceanic Sciences, UCLA ), who will share his research on "How much solar radiation does atmospheric mineral dust absorb?".




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Title: "Form and function of insect wing veins"


Abstract:
Mineral dust particles are critical to the Earth’s climate system because they account for approximately ~25 % of the shortwave radiation scattered and absorbed by all aerosols in the atmosphere. But despite the importance of these radiative effects, the amount of shortwave radiation absorbed by atmospheric dust remains largely unclear. This is because knowledge of dust absorption properties, characterized by the dust aerosol absorption optical depth primarily depends on the dust size distribution and the complex refractive index, which are difficult to observe from remote-sensing platforms. As a result, climate model simulations and retrieval algorithms rely on certain assumptions about dust properties that have led to significant uncertainties in their estimation of the global dust absorption optical depth. In this talk, I will describe a framework that leverages dozens of in-situ measurements of the dust size distribution and single-scattering albedo to obtain a more accurate constraint on the global dust absorption optical depth. I will show that atmospheric dust is much coarser with significant spatial variability in the imaginary refractive index than represented in climate models. Consequently, I will show that amount of solar radiation absorbs by dust differs substantially from what climate models simulate, which has important implications for the Earth’s energy balance.



Bio:

 Adeyemi was born in Nigeria, where he obtained his B.S. (with First-Class honors) in Physics at the Federal University of Technology, Akure. Thereafter, he was one of only 50 students selected worldwide in 2009 to study at the International Center for Theoretical Physics, Italy, under the UNESCO/IAEA study grant. There, he obtained an M.S.-equivalent diploma in Earth System Physics in 2011. He then moved to the United States for graduate school and obtained his Ph.D. in Meteorology and Physical Oceanography at the University of Miami in 2016, for which he received the Distinguished Koczy Award for outstanding doctoral-level research. He is also a fellow at the center for diverse leadership in science, where he contributes to the diversity efforts at UCLA. Currently, he is a UC President Post-doctoral fellow working on constraining the dust aerosol properties and their impacts on the global climate at UCLA.




Best Regards,

KJ, Manisha, and Anna



Organizers for Fall 2020: KJ Min, Manisha Dolui, Anna Jurusik

Faculty coordinator: Asmeret Asefaw Berhe



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You can find the semester schedule below.



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date

speaker

topic

  9/10

Shane Franklin

@ U of Delaware

Preferential flow plays an unknown role in the carbon cycle

9/17

Crystal Kolden

@ UC Merced

The cascading consequences of wildfire: understanding and mitigating impacts to coupled human-natural systems

9/24

Allegra Mayer

@ UC Berkeley

Soil C sequestration potential in CA grasslands with compost amendments

10/1

Govind Dev Kumar

@ UGA

Salmonella's Trojan Horse Strategy to Evade Antimicrobial Stress

10/8

Charlotte Decock

@ Cal Poly, San Luis Obispo

Soil health and fertility assessment

10/15

Emma Hauser

@ U of Kansas

Integrated rooting system development and soil development structures ecosystem nutrient dynamics

10/29

Mary Salcedo

@ Virginia Tech

Form and function of insect wing veins

11/5

Todd Longbottom

@ UC Merced

Oxidative weathering of ancient organic matter and formation of modern soils

11/12

Asmeret Asefaw Berhe @ UC Merced

Finding and securing grants for students & postdocs

11/19

Adeyemi Adebiyi

@ UC Merced

How much solar radiation does atmospheric mineral dust absorb?

11/26

Thanksgiving holiday



12/3

Yamina Pressler

@ Cal Poly, San Luis Obispo

Soil food webs and organic matter in fire-affected savanna ecosystems

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