Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/acp-2018-101
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
07 Feb 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).
The Green Ocean: Precipitation Insights from the GoAmazon2014/5 Experiment
Die Wang1, Scott E. Giangrande1, Mary Jane Bartholomew1, Joseph Hardin2, Zhe Feng2, Ryan Thalman3, and Luiz A. Machado4 1Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, USA
2Pacific Northwest National Laboratory, Richland, WA, USA
3Department of Chemistry, Snow College, Richfield, UT, USA
4National Institute for Space Research, Sao Jose dos Campos, Brazil
Abstract. This study summarizes the precipitation properties collected during the GoAmazon2014/5 campaign near Manaus in central Amazonia, Brazil. Precipitation breakdowns, summary radar rainfall relationships and self-consistency concepts from a coupled disdrometer and radar wind profiler measurements are presented. The properties of Amazon cumulus and associated stratiform precipitation are discussed, including segregations according to seasonal (Wet/Dry regime) variability, cloud echo-top height and possible aerosol influences on the apparent oceanic characteristics of the precipitation drop size distributions. Overall, we observe that the Amazon precipitation straddles behaviors found during previous U.S. Department of Energy Atmospheric Radiation Measurements program (ARM) tropical deployments, with distributions favoring higher concentrations of smaller drops than ARM continental examples. Oceanic type precipitation characteristics are predominantly observed during the Amazon Wet seasons. An exploration of the controls on Wet season precipitation properties reveals that wind direction, as compared with other standard radiosonde thermodynamic parameters or aerosol count/regime classifications performed at the ARM site, provides a good indicator for those Wet season Amazon events having an oceanic character for their precipitation drop size distributions.

Citation: Wang, D., Giangrande, S. E., Bartholomew, M. J., Hardin, J., Feng, Z., Thalman, R., and Machado, L. A.: The Green Ocean: Precipitation Insights from the GoAmazon2014/5 Experiment, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2018-101, in review, 2018.
Die Wang et al.
Die Wang et al.
Die Wang et al.

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