Rainfall, groundwater, and surface water isotope data from extreme tropical cyclones (2016-2019) within the Caribbean Sea and Atlantic Ocean basins

Unique high frequency tempestology sampling of rainfall enabled δ18O and δ2H isotope analysis. In total, 161 surface rainfall samples were collected in passive devices with event-based and daily frequencies, resulting in the first surface TC isotopic anatomy across the Caribbean Sea and Atlantic Ocean basins to date.

Our data also provides spring (N=338) and surface water (N=334) isotope compositions after the impact of Hurricane Otto and Tropical Storm Nate in central Costa Rica. Our data may improve the current understanding of key processes governing rainfall isotope ratios in the Caribbean Sea and Atlantic Ocean basins during continental and maritime TC tracks, with applications to the interpretation of paleo-hydroclimate and groundwater recharge processes across the tropics.