COLDEX Seminar Series
COLDEX seminars are typically held on the first Monday of each month, usually at 11 am Pacific (though times may be adjusted for international speakers). We feature talks about ice core science from scientists within and beyond COLDEX. These seminars are open to the public - please email Managing Director Danielle Whittaker (whittdan at oregonstate dot edu) for the Zoom link.
Monday, April 1, 11:00 am - 12:00 pm Pacific: Dr. Ran Feng, University of Connecticut: Do Pliocene records support weakened Pacific Walker Circulation with elevated CO2?
Monday, May 6, 8:00 - 9:00 am Pacific [note special time!]: Dr. Guitao Shi, East China Normal University: Preliminary evidence on the old ice in Grove Mountains blue ice area, East Antarctica
Monday, June 3, 11:00 am - 12:00 pm Pacific: Dr. Mike Weber, University of Bonn: Plio-Pleistocene dust records from Iceberg Alley
Monday, July 1: TBD
Monday, August 5, 11:00 am - 12:00 pm Pacific: COLDEX REU presentations
All Upcoming Events
All times are Pacific
COLDEX Seminar: Dr. Guitao Shi, East China Normal University
Dr. Guitao Shi, East China Normal University: Preliminary evidence on the old ice in Grove Mountains blue ice area, East Antarctica
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Exploration & Modeling Monthly Meeting
The Exploration and Modeling group meets the first Monday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Ice Coring & Ice Analysis Monthly Meeting
The Ice Coring & Ice Analysis group meets the second Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Diversity, Equity, and Inclusion Monthly Meeting
The Diversity, Equity, and Inclusion group meets the third Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Knowledge Transfer Monthly Meeting
The Knowledge Transfer group meets the fourth Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Education & Leadership Monthly Meeting
The Education and Leadership group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Early Career Researchers Monthly Meeting
The Early Career Researchers group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX Seminar
Dr. Mike Weber, University of Bonn: Plio-Pleistocene dust records from Iceberg Alley
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Exploration & Modeling Monthly Meeting
The Exploration and Modeling group meets the first Monday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Ice Coring & Ice Analysis Monthly Meeting
The Ice Coring & Ice Analysis group meets the second Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Diversity, Equity, and Inclusion Monthly Meeting
The Diversity, Equity, and Inclusion group meets the third Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Knowledge Transfer Monthly Meeting
The Knowledge Transfer group meets the fourth Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Education & Leadership Monthly Meeting
The Education and Leadership group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Early Career Researchers Monthly Meeting
The Early Career Researchers group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX Seminar
COLDEX 2024 REUs will give presentations about their summer projects.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX Annual Meeting
The third annual All-Hands COLDEX meeting will take place September 9-11, 2024 at Oregon State University in Corvallis, OR.
Early Career Researchers Monthly Meeting
The Early Career Researchers group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Education & Leadership Monthly Meeting
The Education and Leadership group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Knowledge Transfer Monthly Meeting
The Knowledge Transfer group meets the fourth Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Diversity, Equity, and Inclusion Monthly Meeting
The Diversity, Equity, and Inclusion group meets the third Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX All-Hands Meeting: Knowledge Transfer Plans for Phase II
The Knowledge Transfer team will share their plans for COLDEX Phase II, and will give the COLDEX community an opportunity to give feedback and ideas.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Ice Coring & Ice Analysis Monthly Meeting
The Ice Coring & Ice Analysis group meets the second Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Exploration & Modeling Monthly Meeting
The Exploration and Modeling group meets the first Monday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX Seminar
Dr. Ran Feng, University of Connecticut: Do Pliocene records support weakened Pacific Walker Circulation with elevated CO2?
Ocean-atmosphere coupled models predict pronounced weakening of the Pacific Walker Circulation (PWC) with increasing CO2 associated with the enhanced tropospheric stability and reduced convective mass overturning. However, observational evidence is inconclusive and do not confirm a clear weakening signal. Understanding the role of CO2 in driving PWC changes is in part impeded by substantial internal variability and anthropogenic aerosol forcings incorporated in instrumental records. Here, we explore the possibility of using a paleoclimatic analogue, i.e., the interval from the mid-Piacenzian (3.3 – 3.0 Ma) to early Pleistocene (~2.4 Ma), to understand the contemporary PWC sensitivity to CO2 changes. We focus on identifying imprints of PWC changes on water isotope archives. Existing research has shown high potential for developing proxy constraints for PWC variability during the last millennium using water isotope archives.
A set of isotope-tracking enabled and atmosphere-land-ocean coupled iCESM1.2 simulations were developed to explore this question. These simulations utilized the water tagging technique to track life-cycles of different water species (H216O, H218O and HD16O), and ran with mid-Piacenzian boundary conditions and a range of CO2 values. They revealed a linear relationship between PWC strength and precipitation δD contrast between the eastern and western equatorial Pacific as a result of weakened convection primarily in the western equatorial Pacific. Moreover, varying east-west contrast of seawater δ18O across the equatorial Pacific strongly scales with varying equatorial zonal ocean current and wind stress, suggesting an important role of PWC in modulating seawater δ18O through changing surface wind stress. Estimated seawater δ18O evolution during the past ~3.5 Myrs, derived from published carbonate δ18O and SST estimates, is qualitatively consistent with our simulated seawater δ18O changes with mid-Piacenzian and preindustrial CO2 levels, and hence, supporting a weaker PWC with elevated CO2 during the mid-Piacenzian. These results therefore lend support to the predicted future weakening of the PWC by many atmosphere-ocean coupled models. Ongoing work will further test the effect of glaciation and uncertainties in prescribed ice sheets on simulated water isotope responses.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Knowledge Transfer Monthly Meeting
The Knowledge Transfer group meets the fourth Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Early Career Researchers Monthly Meeting
The Early Career Researchers group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Education & Leadership Monthly Meeting
The Education and Leadership group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX All-Hands Meeting: DEI Plans for Phase II
The Diversity, Equity, and Inclusion team will share their plans for COLDEX Phase II, and will give the COLDEX community an opportunity to give feedback and ideas.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Diversity, Equity, and Inclusion Monthly Meeting
The Diversity, Equity, and Inclusion group meets the third Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Ice Coring & Ice Analysis Monthly Meeting
The Ice Coring & Ice Analysis group meets the second Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Exploration & Modeling Monthly Meeting
The Exploration and Modeling group meets the first Monday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Exploration & Modeling Monthly Meeting
The Exploration and Modeling group meets the first Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Knowledge Transfer Monthly Meeting
The Knowledge Transfer group meets the fourth Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Early Career Researchers Monthly Meeting
The Early Career Researchers group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Education & Leadership Monthly Meeting
The Education and Leadership group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX All-Hands Meeting: Updates from Field Teams
Our Antarctic field teams will present updates on their work from the 2023/24 season.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Diversity, Equity, and Inclusion Monthly Meeting
The Diversity, Equity, and Inclusion group meets the third Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Ice Coring & Ice Analysis Monthly Meeting
The Ice Coring & Ice Analysis group meets the second Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX All-Hands Meeting: Education & Leadership Plans for Phase II
The Education & Leadership team will share their progress thus far and start a discussion about COLDEX Phase II. This meeting will give the COLDEX community an opportunity to give feedback and ideas.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Exploration & Modeling Monthly Meeting
The Exploration and Modeling group meets the first Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Education & Leadership Monthly Meeting
The Education and Leadership group meets the fourth Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX Early Career Researchers Monthly Meeting
The Early Career Researchers group meets the fourth Thursday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Knowledge Transfer Monthly Meeting
The Knowledge Transfer group meets the fourth Wednesday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Diversity, Equity, and Inclusion Monthly Meeting
The Diversity, Equity, and Inclusion group meets the third Friday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
Ice Coring & Ice Analysis Monthly Meeting
The Ice Coring & Ice Analysis group meets the second Thursday of every month.
See COLDEX Slack Workspace or email invitation for Zoom link, or email whittdan@oregonstate.edu
COLDEX REU program: virtual application workshop
Join COLDEX on Tuesday January 9 at 1 pm Pacific Time for an online workshop to help you apply to the COLDEX REU summer program. We will also be sharing resources to help you find other summer research experiences in the sciences.
To register for the workshop, click here: https://shorturl.at/xBUV2