I study the physics of clouds, radiation, and climate, using a hierarchy of approaches ranging from pencil-and-paper theory to comprehensive computer simulations. I am currently a Research Physical Scientist at NOAA's Geophysical Fluid Dynamics Laboratory. Prior to this I held post-doctoral positions in Princeton Geosciences as well as Princeton's AOS program, and I got my PhD in 2016 from UC Berkeley working with David Romps.
I have a keen interest in communicating climate science to other scientists as well as the public, both on my own (see the lectures page) and as a member of Climate Up Close. I also collaborate with C-Change Conversations.
Before turning to climate science I studied mathematical physics for many years, during which I authored the textbook An Introduction to Tensors and Group Theory for Physicists. See the book page for more information.
I welcome correspondence at email@example.com. For more about me, listen here.
Aug. 2022   The paper "Dynamic pressure drag on rising buoyant thermals in a neutrally stable environment", led by Hugh Morrison and co-authored with Jun-ichi Yano, is now published in JAS.   [article webpage] [pdf]
Mar. 2022   I wrote a piece for the online magazine Inference on the relation between climate science and physics. [article]
Jan. 2022   The paper "On the resolution-dependence of anvil cloud fraction and precipitation efficiency in radiative-convective equilibrium", co-authored with Linjiong Zhou, is now published in JAMES.   [article webpage] [pdf] [si]
December 2021   The paper "The Connection between Carnot and CAPE Formulations of TC Potential Intensity", led by Raphael Rousseau-Rizzi and co-authored by myself and Tim Merlis, is now published in Journal of Climate.   [article webpage] [pdf]
September 2021   The paper "An Analytical Model for Spatially Varying Clear-Sky CO2 Forcing", co-authored by Jake Seeley, David Paynter, and Stephan Fueglistaler, is now published in
Journal of Climate.
[article webpage] [pdf] [APS-GPC newsletter]
August 2021   The paper "Joint Dependence of Longwave Feedback on Surface Temperature and Relative Humidity", led by PhD student Brett McKim and co-advised by myself and Geoff Vallis, is now published in
Geophysical Research Letters.
[article webpage] [pdf]
July 2021   The paper "Simpson's law and the Spectral Cancellation of Climate Feedbacks", co-authored with Daniel Koll and Nick Lutsko, is now published in Geophysical Research Letters.   [article webpage] [pdf]
June 2021   I wrote a reviewof Steve Koonin's book Unsettled for C-Change Conversations.
Apr. 2021   I was interviewed by friend and colleague Adam Sobel for the Deep Convection podcast.
Mar. 2021   Princeton sophomore Grace Liu's research on the historical record of Lake Carnegie freeze-over, supervised by Gabe Vecchi, myself, and Sirisha Kalidindi, was featured on the Princeton university homepage.   [PU article] [PAW article] [preprint]
Dec. 2020   The paper "H2O windows and CO2 radiator fins: a clear-sky explanation for the peak in ECS", led by collaborator Jake Seeley, is now published in Geophysical Research Letters.   [article webpage] [pdf] [talk]
Oct. 2020   I gave a presentation entitled "How high the sky? Tropospheric depth and water vapor spectroscopy" at the ongoing virtual ECS Symposium.
Aug. 2020   The paper "Linearity of outgoing longwave radiation: From an atmospheric column to global climate models", led by PhD student Yi Zhang and co-authored by myself and Stephan Fueglistaler, is now published in Geophysical Research Letters.   [article webpage] [pdf]
Apr. 2020   I received the 2019 James R. Holton award for early career scientists from the American Geophysical Union. [citation]
Jan. 2020   Two papers on radiative transfer, "Simple Spectral Models for Atmospheric Radiative Cooling," and
"On the Cooling-to-Space Approximation",
led by myself and in collaboration with Stephan Fueglistaler, are now published in JAS.
[article webpage] [pdf] [corrigendum] [article webpage] [pdf] [corrigendum]
Jan. 2020   I was interviewed for another story about climate scientists flying less, this one on Philadelphia public radio WHYY. Other content on this topic can be found in the May 2019 post below.
Dec. 2019   Two papers on entrainment in dry convection, "Entrainment in Resolved, Dry Thermals" and "Buoyancy-driven Entrainment in Dry Thermals", led by my collaborator Daniel Lecoanet and student Brett McKim respectively, are now published.   [article webpage] [pdf] [article webpage] [pdf] [animations]
Nov. 2019   The paper "Climatology explains intermodel spread in tropical upper tropospheric cloud and relative humidity response to greenhouse warming", led by Stephen Po-Chedley and co-authored by myself and others, is now published in Geophysical Research Letters.   [article webpage] [pdf]
Aug. 2019   Xin Rong Chua, working with her PhD advisor Yi Ming and myself, published a paper entitled "Investigating the Fast Response of Precipitation Intensity and Boundary Layer Temperature to Atmospheric Heating Using a Cloud-Resolving Model" in Geophysical Research Letters.   [article webpage] [pdf] [si]
May 2019   I was interviewed, along with Kim Cobb and Peter Kalmus, for a story in Science about climate scientists flying less. I discuss my own experience in further detail at noflyclimatesci.org.
Feb. 2019   A second paper on anvil clouds, entitled "FAT or FiTT: Are anvil clouds or the tropopause temperature-invariant?", led by colleague Jacob T. Seeley, also now published in Geophysical Research Letters.   [article webpage] [pdf] [si]
Jan. 2019   Our work entitled "Formation of tropical anvil clouds by slow evaporation", led by colleague Jacob T. Seeley, now published in Geophysical Research Letters.   [article webpage] [pdf] [si]
Oct. 2018   My work entitled "Mean precipitation change from a deepening troposphere", done in collaboration with David Romps, was published in Proceedings of the National Academy of Sciences.   [article webpage] [pdf] [si]