Work

Responses to Humidity and Temperature Perturbations in High‐Resolution Simulations of Convection

Year: 2026

Type: article

Abstract: Convection parameterization is a leading source of uncertainty in global and regional climate models, and a lack of ground truth complicates the assessment of convection scheme performance. Here we test a linear framework for quantifying convective responses, using two models run at convection‐permitting resolution, to examine model responses to temperature and humidity perturbations. For the models examined, a grid spacing finer than ∼1 km was required for consistent (hence potentially accurate) responses, implying good representation of convectively‐coupled dynamics. The results from the tests at 100 and 250 m grid spacing could reasonably be used in idealized tests of convective schemes, as their spread is mostly small compared to the spread of previously reported scheme behavior.

Source: Journal of Advances in Modeling Earth Systems

DOI: 10.1029/2025ms005340

Authors: Timothy H. Raupach, Chimene L. Daleu, Robert S. Plant, Steven C. Sherwood, Yi‐Ling Hwong

Institutions: UNSW Sydney, Climate Change Research Centre, ARC Centre of Excellence for Climate Extremes, University of Reading, International Institute for Applied Systems Analysis

Language: English

Topic: Meteorological Phenomena and Simulations

Subfield: Atmospheric Science

Field: Earth and Planetary Sciences

Domain: Physical Sciences

SDG: Climate action

Open Access status: gold

Estimated APC paid: $2,650