THIS IS A ZOOM MEETING. SEE EMAIL ANNOUNCEMENTS FOR INFORMATION ON HOW TO JOIN.
Contact costa@ig.utexas.edu if you are not on the seminar email lists.

Speaker: Charles Jackson, Research Scientist, UTIG

Host: Yuko Okumura

Title: Non-Convective Precipitation and the Law of Unintended Consequences

Abstract: I will present a set of recent findings concerning a structural error in the organization of tropical precipitation, or the lack thereof, that has large consequences for how rainfall is affected by greenhouse gas forcing (Stephens et al., JCLI, 2019). These connections were elicited within ensembles of alternate configurations of the Community Atmosphere Model versions CAM3.1 and CAM5.3, which represent some of the parametric uncertainties that exist in the representation of deep convection and cloud microphysics. The range of outcomes from these ensembles mimic many of the outcomes seen within the Climate Model Intercomparison Project (CMIP5) ensemble but with more clarity. This is due to the more focused and thorough nature of the exploration of cloud and convective processes using Bayesian calibration of a single model as compared to the CMIP5 “ensemble of opportunity.” The structure of the errors revealed in the CAM ensembles suggests a distinctive role in climate of the mesoscale organization of tropical convection. I will emphasize some of the ways that scientific considerations have shaped the statistical and computational approaches used to generate the CAM ensembles. I will also share my vision for how these tools and considerations fit into data-driven model development and predictability of the Earth System.

Stephens, B.A., C.S. Jackson, and B.M Wagman, 2019. Effect of Tropical Nonconvective Condensation on Uncertainty in Modeled Projections of Rainfall. Journal of Climate, 32(19), 6571–6588, doi:10.1175/JCLI-D-18-0833.1

Informal weekly presentations by UTIG students and researchers. Bring your lunch!

Speaker: James Biemiller, Graduate Research Assistant, UTIG

Speaker: Details to be announced

Host:

Title:

Informal weekly presentations by UTIG students and researchers. Bring your lunch!

Speaker: Kelly Olsen, Graduate Research Assistant, UTIG

THIS IS A ZOOM MEETING. SEE EMAIL ANNOUNCEMENTS FOR INFORMATION ON HOW TO JOIN.
Contact costa@ig.utexas.edu if you are not on the seminar email lists.

Speaker: Manasij Santra, Postdoctoral Fellow, UTIG

Host: Steve Phillips

Title: Marine hydrate systems

Informal weekly presentations by UTIG students and researchers. Bring your lunch!

Speaker: Natalie Wolfenbarger, Graduate Research Assistant, UTIG