©2026 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2026 Biological and Chemical Oceanography Data Management Office.Monthly measurements of the thermohaline structure, water column chemistry, and primary production were collected at station ALOHA as part of the Hawaii Ocean Time-series (HOT) program. This dataset presents biogoeochemical data from water samples collected on cruises HOT-001 through HOT-355 from October 1988 through December 2024.
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Water samples for a variety of chemical and biological measurements are routinely collected from the surface to within 10 meters of the seafloor. To the extent possible, we collect samples for complementary biogeochemical measurements from the same or from contiguous casts to minimize aliasing caused by time-dependent changes in the density field. This approach is especially important for samples collected in the upper 350 meters of the water column.
Furthermore, we attempt to sample from common depths and specific density horizons each month to facilitate comparisons between cruises. Water samples for salinity determinations are collected from every water bottle to identify sampling errors. Approximately 20% of the water samples are collected and analyzed in duplicate or triplicate to assess and track our precision in sample analyses.
HOT Station ALOHA data was used in the compilation for the time-series data synthesis product
White, A. E., Karl, D. M., Fujieki, L. A. (2025). Niskin bottle water samples and associated CTD measurements from the Hawaii Ocean Time-Series cruises from 1988-2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 3) Version Date 2025-04-22 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.3773.3 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.