ESOC virtual coffee hour occurs weekly from 9-10am on Wednesdays. We will be meeting remotely on Zoom. Please email Claire Waugh (waughc@colorado.edu) for information.

ESOC researchers, post-docs and graduate students gather for conversation and to discuss research. Occasional guest speakers are invited to give short presentations on topics of interest.

ESOC virtual coffee hour occurs weekly from 9-10am on Wednesdays. We will be meeting remotely on Zoom. Please email Claire Waugh (waughc@colorado.edu) for information.

ESOC researchers, post-docs and graduate students gather for conversation and to discuss research. Occasional guest speakers are invited to give short presentations on topics of interest.

Presented by: Balaji Rajagopalan, Professor & Chair, Department of Civil, Environmental, and Architectural Engineering, University of Colorado, Boulder

Registration link:  Register in advance for this meeting: https://cuboulder.zoom.us/meeting/register/tJcvce6rrTorGdPCvw03x6P5UbHcT...

After registering, you will receive a confirmation email containing information about joining the meeting.  

Abstract:

The southeast Prairie Pothole Region (SEPPR) is an important habitat in the northern Great Plains with millions of wetlands used by waterfowl, pheasants, deer, and many unique species that cannot be found elsewhere in the regional landscape. The region is highly sensitive to variations in climate, and it is projected to face climate changes in the future. Summer precipitation in the SEPPR is integral by helping to sustain the ecosystem after spring snowmelt. Thus, understanding, modeling, and projecting the summer hydroclimatology and ecology is crucial for resource managers of the SEPPR in managing the ecosystem efficiently. Expanding on available summer climate and climate variability information and providing unique tools that provide predictions will assist in their work. Motivated by this broader need, this research provides four key contributions. (1) We provide analysis and understanding of the space-time variability of summer hydroclimatology and potential mechanisms. We establish teleconnections and potential mechanisms driving the SEPPR summer precipitation variability through multivariate analysis of large-scale climate variables and regional rainfall. (2) Using the Lagrangian parcel-tracking model HYSPLIT, moisture sources and pathways of summer rainfall were identified. (3) We provide SEPPR resource managers with a predictive tool by employing an underutilized statistical forecasting technique – multivariate Canonical Correlation Analysis – to develop multisite forecasting models for spring and summer SEPPR pond counts. These models predict spring (May) and summer (July) pond counts for each region of the United States Fish and Wildlife Service’s pond and waterfowl surveys. (4) Finally, we provide SEPPR resource managers with a novel, predictive tool capable of simulating multiple vegetation types native to the SEPPR. This integrated climate-ecological modeling framework (ICEMF) couples a stochastic weather generator that can be conditioned on climate forecasts along with SEPPR climate, soil, and vegetation information in an ecological model, DayCent, to simulate ensembles of vegetation attributes in the SEPPR. The combination of new insights into the space-time hydroclimate variability, moisture sources and pathways of summer moisture, a multi-site forecasting model for ponds that supports SEPPR ecology, and the ICEMF makes a significant contribution to the broader community. These can be applied to model other ecological systems in the world, enabled to study impacts of climate change, and help with efficient and sustainable management.

About the speaker:

Professor Balaji Rajagopalan is the Chair of the Department of Civil, Environmental and Architectural Engineering (CEAE) and a Fellow of Cooperative Institute of Research in Environmental Sciences (CIRES), CU Boulder. He pursues research in diverse interdisciplinary areas spanning – hydro-climatology; water resources management, Indian summer monsoon, paleo-climate and stochastic hydrology. In addition, large scale statistical analysis and modeling for applications to water and wastewater quality, construction safety, building energy efficiency and others. For his research contributing to improved operations, management and planning of water resources in the semi-arid river basins of Western USA, especially the Colorado River System, he was a co-recipient of the Partners In Conservation Award from the Department of Interior in 2009.  He was elected Fellow, American Geophysical Union, in 2019.

Past NC CASC Webinar Recordings: https://nccasc.colorado.edu/webinars 

Dates for 2021 NC CASC webinars:

September 9, 2021, 11a-12p MDT

October 14, 2021, 11a-12p MDT

November 11, 2021, 11a-12p MST

December 9, 2021, 11a-12p MST

ESOC virtual coffee hour occurs weekly from 9-10am on Wednesdays. We will be meeting remotely on Zoom. Please email Claire Waugh (waughc@colorado.edu) for information.

ESOC researchers, post-docs and graduate students gather for conversation and to discuss research. Occasional guest speakers are invited to give short presentations on topics of interest.

**This event has been CANCELLED and rescheduled for Wednesday, Sept. 15, 2021.**

If you’re looking for more detailed information about conducting travel, including step-by-step instructions on submitting travel requests, preparing quotes and booking airfare in Concur, completing Travel Vouchers and submitting expense reports, please join us for an in-depth training on August 24:

August 24, 9 am - 12 pm – https://cuboulder.zoom.us/j/95053795324

This training will be led by Rebecca Stossmeister (CIRES Travel & Compliance Lead). We will record and post this training on InsideCIRES afterward.

ANALYTICAL & ENVIRONMENTAL CHEMISTRY DIVISION and

ATMOSPHERIC CHEMISTRY PROGRAM SEMINAR

Jointly sponsored by the Department of Chemistry and the Cooperative Institute for Research in Environmental Sciences (CIRES)

Monday, 30 August 2021
12:40 - 1:10 pm (1/2 seminar)
Remote only: https://cuboulder.zoom.us/j/576316856
University of Colorado, Boulder

Understanding aerosols for pollution, climate change, and disease transmission

Jose-Luis Jimenez,
CU ANYL Faculty (1/2 seminar)

"Our group’s research focuses on understanding the sources, properties, transformations, and sinks of aerosols (and of the gases that interact with them), which have major effects on human health and climate. In this talk I will briefly present results from different projects over the last year, as well as some future directions for our group. I will introduce our aircraft research program, including results from the recent NASA/NOAA FIREX-AQ wildfire smoke study, where we obtained near-molecular level aerosol speciation data at 1 second time resolution. We are investigating both the inorganic and organic composition of the smoke, including important properties such as pH and volatility. I will summarize modeling work with GECKO-A exploring the evolution of OH reactivity with OH exposure for different hydrocarbons. I will discuss our indoor air research, including the apportionment of gases in the CU Art Museum combining 3 different CIMS instruments. I will also briefly describe recent developments on the importance of aerosols for disease transmission, not just for COVID-19 but for all (or most) respiratory diseases.

For those interested in COVID-19 aerosol transmission, you can find a summary of the evidence supporting airborne transmission of COVID-19 at https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(21)00869-2/fulltext, a review for airborne transmission of all respiratory diseases at https://doi.org/10.1126/science.abd9149 (starting Thu 26-Aug), and an overview of the historical reasons for the confusion on this topic at https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3904176."

This seminar will run for approx. 30 minutes, following the seminar there will be a meeting of the ANYL faculty and first year students at the same link.

Please join CIRES Director Waleed Abdalati for another CIRES Town Hall on Tuesday, August 31, 2021, for both CU Boulder and NOAA-based employees.

If you have a question you’d like the Director to address, please send it in (signed or anonymously) by Monday at 3 pm through InsideCIRES.

Join by Zoom: https://cuboulder.zoom.us/j/97758946917