Speaker: Dr. Ichiro Fukumori, California Institute of Technology/Jet Propulsion Laboratory
Title: "Deducing Causal Mechanisms of Sea Level Change in the Beaufort Sea"
Abstract: Over the last two decades, sea level across the arctic’s Beaufort Sea has been rising an order of magnitude faster than its global mean. This rapid regional sea level rise is mainly a halosteric change, reflecting an increase in freshwater content comparable to the Great Salinity...
Speaker: Dr. Aaron Match, NSF Postdoctoral Research Fellow, New York University
Title: Revisiting the photochemistry of the ozone layer: structure, self-healing, and sensitivity to global warming
Abstract: We revisit three classic questions about ozone: 1) Why is the ozone layer in the stratosphere? 2) How does ozone self-healing work? 3) Why is ozone predicted to decrease in the tropical lower stratosphere under global warming? Conventional answers to these questions are common knowledge in textbooks...
Speaker: Dr. Aditi Sheshadri from Stanford University
Title: Towards an improved understanding and representation of atmospheric gravity waves
Abstract: Atmospheric gravity waves (GWs) are ubiquitously excited on the Earth and are critical drivers of the atmospheric circulation, however, they present a challenge to climate prediction: waves on scales of 102-105m can neither be systematically measured with conventional observational systems, nor properly resolved in atmospheric models...
Title:Learning Data-driven Subgrid-scale Models for Geophysical Turbulence: Stability, Extrapolation, and Interpretation
Abstract: The atmospheric and oceanic turbulent circulations involve a variety of nonlinearly interacting physical processes spanning a broad range of spatial and temporal scales. To make simulations of these turbulent flows...
Title: “Hydrology in the supercomputing age: How computational advances have revolutionized our field, and what big data and massively parallel simulations mean for the future of hydrologic discovery”
Abstract: We are in the midst of a revolution in computing and data. In the past 50 years we have moved from electrical analog...
Speaker:Prof. Joseph LaCasce from University of Oslo
Title:"Weakening of the Atlantic Meridional Overturning Circulation in an extreme climate"
Abstract: The Atlantic Meridional Overturning Circulation (AMOC) regulates the global transport of heat, freshwater, trace gases and nutrients in the Atlantic sector. Published proxy records and modeling studies, reviewed by the IPCC, are consistent with a weakening AMOC in the warming climate. We examine AMOC...
Professor Huybers will host a discussion on a recent paper by Resplandy et al. (2018), "Quantification of ocean heat uptake from changes in atmospheric O2 and...
Title:"Impact of Ice and Wind on Phytoplankton Blooms in the Chukchi Sea in a Changing Climate"
Abstract:Primary production in the Chukchi Sea, north of the Bering Strait, has increased dramatically over the past few decades. This is due in part to the decline in...
Prof. Eli Tziperman will lead the discussion on the Millan et al 2018 paper "Vulnerability of Southeast Greenland Glaciers to Warm Atlantic Water From Operation IceBridge and Ocean Melting Greenland Data"(Paper).
Here's his description of the paper and its relevance: One of the most significant ocean...
Abstract:Atmospheric blocking is an important process for both weather and climate, yet its first-order dynamics is still not well understood. The eddy straining mechanism of Shutts (1983) has been considered as the foundation to understanding the maintenance of blocks, which is consistent with the observation...
Prof. Dan Schrag will lead the discussion on the Schneider, Kaul, and Pressel (2019) paper titledPossible climate transitions from breakup of stratocumulus decks under greenhouse warming
During the disucssion, Prof. Schrag will lead us through the following:
This recent paper by Tapio Schneider presents a new idea for a cloud feedback that may amplify warming at higher CO2 concentrations. If correct, it may have...