Publication Abstracts
Sebok et al. 2026
Sebok, A., C. Schumacher, , and S.E. Giangrande, 2026: Hydrometeor transport and the stratiform water budget in Amazonian mesoscale convective systems. J. Atmos. Sci., 83, no. 5, 819-835, doi:10.1175/JAS-D-25-0156.1.
A significant portion of precipitation falls within the stratiform regions of mesoscale convective systems (MCSs). These regions are formed from convective clouds that have either weakened and formed a horizontally stratified structure, or have advected hydrometeors to form a trailing stratiform region, with further precipitation growth promoted by in situ dynamical and microphysical processes. GoAmazon2014/5 field campaign observations are used to quantify the stratiform water budget of six MCSs (three each from the wet and dry seasons) utilizing the framework from Leary and Houze (1980), with an emphasis on the transfer of hydrometeors (CA) from the convective to the stratiform regions. The storms were predominantly leading-line/trailing-stratiform MCSs, but two had embedded convection in the stratiform region, which can complicate water budget calculations. A pulse-like pattern with a mean interval of 21 minutes occurs in CA during each storm resulting from a lag between the initial convective updrafts and the subsequent hydrometeor transport and sedimentation in the stratiform region. The peaks in CA were followed by peaks in hydrometeor growth associated with the mesoscale updraft (Cmu) in the stratiform region. Averaged over the six storms, the positive contributions of CA and Cmu to the stratiform water budget were roughly equal, although storm-to-storm variations existed. Negative contributions from evaporation below cloud base in the mesoscale downdraft and detrainment from the stratiform region into the non-precipitating anvil cloud and environment accounted for 53% and 21% of the sum of CA and Cmu, respectively, resulting in a mean stratiform region precipitation efficiency of 26%.
Export citation: [ BibTeX ] [ RIS ]
BibTeX Citation
@article{se04300i,
author={Sebok, A. and Schumacher, C. and Elsaesser, G. S. and Giangrande, S. E.},
title={Hydrometeor transport and the stratiform water budget in Amazonian mesoscale convective systems},
year={2026},
journal={Journal of the Atmospheric Sciences},
volume={83},
number={5},
pages={819--835},
doi={10.1175/JAS-D-25-0156.1},
}
[ Close ]
RIS Citation
TY - JOUR ID - se04300i AU - Sebok, A. AU - Schumacher, C. AU - Elsaesser, G. S. AU - Giangrande, S. E. PY - 2026 TI - Hydrometeor transport and the stratiform water budget in Amazonian mesoscale convective systems JA - J. Atmos. Sci. JO - Journal of the Atmospheric Sciences VL - 83 IS - 5 SP - 819 EP - 835 DO - 10.1175/JAS-D-25-0156.1 ER -
[ Close ]
