JOANNE: Joint dropsonde Observations of the Atmosphere in tropical North atlaNtic meso-scale Environments

As part of the EUREC 4 A field campaign which took place over the tropical North Atlantic during January–February 2020, 1215 dropsondes from the HALO and WP-3D aircraft were deployed through 26 flights to characterize the thermodynamic and dynamic environment of clouds in the trade-wind regions. We...

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Bibliographic Details
Published in:Earth System Science Data
Main Authors: George, Geet, Stevens, Bjorn, Bony, Sandrine, Pincus, Robert, Fairall, Chris, Schulz, Hauke, Kölling, Tobias, Kalen, Quinn T., Klingebiel, Marcus, Konow, Heike, Lundry, Ashley, Prange, Marc, Radtke, Jule
Format: Text
Language:English
Published: 2021
Subjects:
North Atlantic
Online Access:https://doi.org/10.5194/essd-13-5253-2021
https://essd.copernicus.org/articles/13/5253/2021/
Description
Summary:As part of the EUREC 4 A field campaign which took place over the tropical North Atlantic during January–February 2020, 1215 dropsondes from the HALO and WP-3D aircraft were deployed through 26 flights to characterize the thermodynamic and dynamic environment of clouds in the trade-wind regions. We present JOANNE (Joint dropsonde Observations of the Atmosphere in tropical North atlaNtic meso-scale Environments), the dataset that contains these dropsonde measurements and the products derived from them. Along with the raw measurement profiles and basic post-processing of pressure, temperature, relative humidity and horizontal winds, the dataset also includes a homogenized and gridded dataset with 10 m vertical spacing. The gridded data are used as a basis for deriving diagnostics of the area-averaged mesoscale circulation properties such as divergence, vorticity, vertical velocity and gradient terms, making use of sondes dropped at regular intervals along a circular flight path. A total of 85 such circles, ∼ 222 km in diameter, were flown during EUREC 4 A. We describe the sampling strategy for dropsonde measurements during EUREC 4 A, the quality control for the data, the methods of estimation of additional products from the measurements and the different post-processed levels of the dataset. The dataset is publicly available ( https://doi.org/10.25326/246 , George et al. , 2021 b ) as is the software used to create it ( https://doi.org/10.5281/zenodo.4746312 , George , 2021 ).

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