Martin Singh

Senior Lecturer, School of Earth, Atmosphere & Environment, Monash University

General circulation notes

Here are a set of notes written for my graduate class on the general circulation of the atmosphere.

News

April 2022

New paper describing future changes in large-scale convective aggregation in climate projections

A new paper led by Philip Bläckberg shows that most climate models (17 of the 19 we investigated) project increases in large-scale aggregation of precipitation in response to global climate change (Bläckberg & Singh, 2022). Previous studies have suggested changes in aggregation as one mechanism by which future changes in preciptiation extremes may be amplified. However, we find little relationship between tropics-wide metrics of convective aggregation and precipitation extremes across models, although most models have significant interannual relationships between these quantities. These results suggest that processes other than aggregation may dominate the intermdodel spread in preciptiation extremes.

April 2022

New paper on the interaction between moist convection and large-scale ascent in the tropics

Our group has published a new paper where we develop a simple model for understanding how moist convective processes interact with large-scale ascending motion in the tropics (Singh & Neogi, 2022). Specifically, the model allows one to calculate the vertical structure of the ascending motion given some parameter relating to mixing and evaporation within convective clouds. This new theoretical framework will be useful for understanding how the tropical circulation changes under climate change. Look out for a forthcoming paper in which we explore this application led by Sramana Neogi!

January 2022

New review The climate system and the second law of thermodynamics published

In collaboration with Prof. Morgan O'Neill, we have published a detailed review describing applications of the second law of thermodynamics in climate research in Reviews of Modern Physics. The review covers the insights that may be gained in understanding atmospheric circulations by considering Earth's entropy budget, as well as non-classical applications of the second law such as statistical geophysical fluid dynamics. The paper is available here.

About me

I am a Senior Lecturer in the School of Earth, Atmosphere & Environment at Monash University and an associate investigator with the ARC Centre of Excellence for Climate System Science.

My research interests are in atmospheric dynamics and climate change. I am particularly interested in the influence of cloud and precipitation processes on atmospheric circulations of a wide range of spatial scales. Understanding the role of such moist processes in determining the climate is an important step toward predicting the possible impacts of human-induced global warming.

My particular research interests include:

Opportunities

I currently have positions open for PhD students and honours students to work on a range of projects broadly concerning the dynamics of the tropical atmosphere. Some potential projects are outlined here, but please contact me if you are interested in working in my group.