Title: “What Can the Internal Variability of Climate Models Tell Us About Their Sensitivity?”
Abstracct: The relationship between climate models' internal variability and their response to external forcings is investigated. Frequency-dependent regressions are performed between the outgoing top-of-atmosphere (TOA) energy fluxes and the...
Title: "Internal tide-driven mixing: processes, parameterizations, and impacts."
Abstract: Diapycnal mixing plays an important role in the large-scale ocean overturning circulation, and much of the energy for this mixing derives... Read more about ClimaTea Journal Club
Title:"Machine learning to represent atmospheric sub-grid processes."
Abstract: The representation of sub-grid processes, especially clouds, remains the largest source of uncertainty for climate prediction. Cloud-resolving models alleviate...
We are glad to have Feng Ding to introduce a recent debate regarding whether Juno’s gravitational measurements can be used to infer Jupiter’s jetstream structure.
During the discussion, Feng will cover the below points:
1. The Juno gravitational measurements have revealed that Jupiter’s gravitational field is north-south asymmetric.
David Wei will presnet a paper by Reymann et al. on an approach to guide a fleet of Unmanned Aerial Vehicles to actively gather data in low-altitude cumulus clouds with the aim of mapping atmospheric variables.
Below is the key points David will go through:
(1) how the trajectory of drones is planned with on-line machine learning that best constrains a cumulus field, and
(2) conventional cloud observation approaches, including satellite, ground-based measurements, and comprehensive...
In preparation of Sonia I. Seneviratne's talk on Wednesday 10/31, Angela will focus Tuesday’s ClimaTea on heatwaves and droughts.
Following the attached paper of Miralles et al. (2018), Angela will lead a discussion on: (1) how observations and coupled climate models have deepened our understanding of heat waves and droughts, and (2) the critical open questions related to heatwaves and droughts, particularly in the context of climate change.
1. Lead a brief map discussion of several recent Tropical Cyclones, focusing on Hurricane Michael’s rapid intensification and the meteorology conditions.
2. Discuss the attached paper by Held and Zhao 2011, which includes both theoretical understanding, scaling results, and high-resolution global model simulations to approach the big question regarding how Tropical cyclones may response to an increase in CO2.
Title: Ocean circulation at the Antarctic margins: local dynamics with outsized climate impacts
Abstract: In recent decades the Southern Ocean has increasingly been identified as a pivotal component of the climate system, notably via its role in...
Title: “What governs the depth of the extratropical troposphere?”
Abstract:I will argue that the depth of extratropical troposphere is constrained - not by fundamental characteristics of extratropical storms (i.e., baroclinic eddies) - but by the rapid decrease with height of...
We are glad to have Packard to discuss machine learning in climate models. Please see the attached paper (link).
During he discussion, Packard will introduce the following points: 1. Deep learning can represent subgrid processes in climate models.
2. The prognostic multiyear simulations are stable and closely reproduce mean climate and variabilities. 3. Generalization works in some cases but fails the others....
