Dissolved iron
CCE-LTER Dissolved Iron (CalCOFI Cruises)
cce-lter_ironCCE-LTERprovider terms ↗doi:10.6073/pasta/63c4e57f87861db3acaf80d1dec103e1v2026.10.14ingested
- years
- 2002–2004
- observations
- 170
- sampling events
- 170
- stations
- 54
- variables
- 1
- depth
- surface only
Overview
Dissolved iron (Fe) concentrations from CalCOFI cruises in the southern California Current System, Nov. 2002 - July 2004 (completed). Surface (0 m) samples collected with a pole sampler, analyzed by FeLume flow-injection analysis. The source also carries total iron (no real values) and a shipboard iron-addition bioassay response (Chla response to Fe+, units unconfirmed); neither is released yet.
Coverage
1 variable
obs_env profile · one value at each depth of a cast · 170 values · 2002–2004 · 1 variable
Access
Every endpoint this dataset can be reached through, grouped by how you would use it. Each name is the link; the copy button beside it copies the address. Everything is in the release record and was answered when the release was cut.
Apps that read this dataset from the release. The icons after a name are the app’s lenses — the spatial grain it shows the data at.
Every way to have the bytes, by source. Nothing here asks you to register first.
Tables from the release (Parquet)
The release’s own tables, as the parquet objects it is frozen from — the same bytes every app and package below reads. A table this dataset shares with others holds every dataset’s rows, so filter on dataset_key; a partition holds only this dataset’s. since is the release whose rows these are: an unchanged table keeps its object.
The same release, from a script or a browser SQL shell.
Packages
The whole release, pinned to a version, with the citation one call away.
con <- calcofi4r::cc_get_db()
calcofi4r::cc_cite("cce-lter_iron")con = calcofi4py.cc_get_db()
calcofi4py.cc_cite("cce-lter_iron")DuckDB, anywhere
No CalCOFI package needed: each table above is a plain parquet object, readable by any DuckDB (or Arrow, pandas, Spark) from its URL. The path carries a content hash — a table whose rows did not change between releases keeps the same object, so nothing unchanged is stored or downloaded twice. Swap in any table above; one shared with other datasets needs WHERE dataset_key = 'cce-lter_iron'. Every object of every release is listed in db-schema.
SELECT *
FROM read_parquet('https://storage.googleapis.com/calcofi-db/ducklake/tables/obs/dataset_key=cce-lter_iron/a67722d71e74a8a3d475fc9b/data_0.parquet')
LIMIT 100;db-query, in the browser
__TBL:obs__ is db-query’s name for the pinned release’s obs object — the hashed path above, resolved for you — so the same SQL keeps working when a release changes the object.
-- cce-lter_iron in the CalCOFI release v2026.10.14
SELECT *
FROM __TBL:obs__
WHERE dataset_key = 'cce-lter_iron'
LIMIT 100;Records about the data, in the standards each portal harvests.
Where this dataset is registered outside calcofi.io: each portal’s role, what it is for, the dataset’s status there and the identifier it is known by. The policy — which portal is the archive of record and why — is in Portals.
Policy Archive of record: CCE-LTER's EDI package knb-lter-cce.21.3 (Barbeau), the ingest's source -- never republished by CalCOFI. OBIS does not apply (pure chemistry, no occurrences). CalOOS: planned (this holding originated from the CalOOS dataset-inventory intake).
Everything here is open — nothing on calcofi.io asks you to register first. If this dataset ends up in something you build or publish, register your use so it can be credited and linked back; to hear when a release changes it, stay informed. Questions: data@calcofi.io.
Cite
This dataset's own citation. What to cite, and how, is a chapter of the docs book.
California Current Ecosystem LTER, CalCOFI - Scripps Institution of Oceanography, and K. Barbeau. 2017. Measurements of dissolved inorganic concentrations of nutrient iron and of iron limitation at selected stations and depths from CalCOFI cruises in the California Current System, Nov. 2002 - July 2004 (completed) ver 3. Environmental Data Initiative. https://doi.org/10.6073/pasta/63c4e57f87861db3acaf80d1dec103e1.
License: custom (https://portal.edirepository.org/nis/mapbrowse?packageid=knb-lter-cce.21.3)
DOI: https://doi.org/10.6073/pasta/63c4e57f87861db3acaf80d1dec103e1BibTeX
@misc{cce-lter_iron,
title = {CCE-LTER Dissolved Iron (CalCOFI Cruises)},
howpublished = {California Current Ecosystem LTER, CalCOFI - Scripps Institution of Oceanography, and K. Barbeau. 2017. Measurements of dissolved inorganic concentrations of nutrient iron and of iron limitation at selected stations and depths from CalCOFI cruises in the California Current System, Nov. 2002 - July 2004 (completed) ver 3. Environmental Data Initiative. https://doi.org/10.6073/pasta/63c4e57f87861db3acaf80d1dec103e1.
},
year = {2017},
doi = {10.6073/pasta/63c4e57f87861db3acaf80d1dec103e1},
url = {https://doi.org/10.6073/pasta/63c4e57f87861db3acaf80d1dec103e1},
note = {License: custom (https://portal.edirepository.org/nis/mapbrowse?packageid=knb-lter-cce.21.3)}
}…and the release it came from
CalCOFI (2026). CalCOFI Integrated Database, release v2026.10.14 [Data set]. Scripps Institution of Oceanography, NOAA Fisheries, and California Department of Fish and Wildlife. https://calcofi.io/db-schema/?v=v2026.10.14BibTeX
@misc{calcofi_release_v2026_10_14,
title = {CalCOFI Integrated Database, release v2026.10.14},
author = {CalCOFI},
year = {2026},
publisher = {Scripps Institution of Oceanography, NOAA Fisheries, and California Department of Fish and Wildlife},
url = {https://calcofi.io/db-schema/?v=v2026.10.14}
}Source files
The original inputs the ingest notebook read, archived by the ingest to the public files bucket — 2 files, 28.2 KB.
- data.csv14.8 KB2026-10-04
- knb-lter-cce.21.3 (1).zip13.4 KB2026-10-04