In this section
@article{Auestad:2024:10.5194/wcd-5-1269-2024,
author = {Auestad, H and Spensberger, C and Marcheggiani, A and Ceppi, P and Spengler, T and Woollings, T},
doi = {10.5194/wcd-5-1269-2024},
journal = {Weather and Climate Dynamics},
pages = {1269--1286},
title = {Spatio-temporal averaging of jets obscures the reinforcement of baroclinicity by latent heating},
url = {http://dx.doi.org/10.5194/wcd-5-1269-2024},
volume = {5},
year = {2024}
}
TY - JOUR
AB - Latent heating modifies the jet stream by modifying the vertical geostrophic wind shear, thereby altering the potential for baroclinic development. Hence, correctly representing diabatic effects is important for modelling the mid-latitude atmospheric circulation and variability. However, the direct effects of diabatic heating remain poorly understood. For example, there is no consensus on the effect of latent heating on the cross-jet temperature contrast. We show that this disagreement is attributable to the choice of spatio-temporal averaging. Jet representations relying on averaged wind tend to have the strongest latent heating on the cold flank of the jet, thus weakening the cross-jet temperature contrast. In contrast, jet representations reflecting the two-dimensional instantaneous wind field have the strongest latent heating on the warm flank of the jet. Furthermore, we show that latent heating primarily occurs on the warm flank of poleward directed instantaneous jets, which is the case for all storm tracks and seasons.
AU - Auestad,H
AU - Spensberger,C
AU - Marcheggiani,A
AU - Ceppi,P
AU - Spengler,T
AU - Woollings,T
DO - 10.5194/wcd-5-1269-2024
EP - 1286
PY - 2024///
SP - 1269
TI - Spatio-temporal averaging of jets obscures the reinforcement of baroclinicity by latent heating
T2 - Weather and Climate Dynamics
UR - http://dx.doi.org/10.5194/wcd-5-1269-2024
VL - 5
ER -