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BEACH: Barbados and Eastern Atlantic Combined High-altitude dropsonde datasets
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DOI：10.5194/essd-18-4425-2026.png)
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Abstract
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Abstract. As part of the ORCESTRA field campaign in August and September 2024; 1191 dropsondes were deployed over the Eastern and Western Atlantic ITCZ from the HALO aircraft coordinated by the PERCUSION and MAESTRO subcampaigns. Here; we describe the hierarchy and processing of the resulting Barbados and Eastern Atlantic Combined High-altitude (BEACH) dropsonde datasets. The Level 0 dataset contains measured meteorological variables; such as relative humidity (RH); temperature (T); pressure (p); eastward (u); and northward (v) wind data as output by the AVAPS system. The corresponding ASPEN quality-controlled data is called Level 1. Level 2 adds further measurement-specific quality control flags. Level 3 builds the core of BEACH including all quality controlled dropsonde profiles interpolated to a common 10 m altitude grid and concatenated into a single dataset. We further derive mesoscale vorticity; divergence; and vertical velocities from 87 circular flight patterns in Level 4 using the regression method. These area-averaged variables will guide our understanding of mesoscale processes acting within the ITCZ; one of the main goals of ORCESTRA. All data levels are openly available on IPFS; while the processing code is made public on GitHub.
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