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- Title
Cloud Regimes Over the Amazon Basin: Perspectives From the GoAmazon2014/5 Campaign.
- Authors
Giangrande, Scott E.; Dié Wang; Mechem, David B.
- Abstract
Radiosonde launches collected during the GoAmazon2014/5 campaign are analyzed to identify the primary thermodynamic regimes accompanying different modes of convection over the Amazon. This analysis identifies five thermodynamic regimes that are consistent with traditional Amazon calendar definitions for seasonal shifts, which include a wet, transitional, and three dry-season clusters. A multisensor ground-based approach is used to project associated bulk cloud and precipitation properties onto these regimes to assess the propensity for each regime for characteristic cloud frequency, cloud types, and precipitation properties. Additional emphasis is given to those regimes that promote deep convective precipitation and organized convective systems. Overall, we find reduced cloud cover and precipitation rates to be associated with the driest regimes and those with the highest convective inhibition CIN. While approximately 15 % of the dataset is designated as organized convection, these events are predominantly contained within transitional regime days.
- Subjects
CLOUDINESS; INTERIM governments; DEFINITIONS; PRECIPITATION (Chemistry); RADIOSONDES
- Publication
Atmospheric Chemistry & Physics Discussions, 2020, p1
- ISSN
1680-7367
- Publication type
Article
- DOI
10.5194/acp-2020-67