Underway seawater flow rate
- 42,445
- values
- 0
- flagged
- 42,445
- sampling events
- 2010–2022
- years
- 1
- dataset
- surface
- depth
- Jan · Feb · Mar · Apr · May · Jul · Aug · Oct · Nov
- seasons
CalCOFI holds 42,445 values of it from 42,445 sampling events in one dataset, 2010–2022, at the surface.R The underway thermosalinographs and fluorometer read seawater pumped aboard through the ship’s intake, so the flow rate is the record of whether water was reaching them when a value was logged.C
other ways to say why · 2
- It describes the ship’s plumbing, not the ocean: the source documents L/min for one file family only, and a flow of exactly -99 L/min is a missing-value code, not a measurement. needs a citation before it can be the pick
- Wikipedia The Thermosalinograph or TSG is an measuring instrument mounted near the water intake of ships to continuously measure sea surface temperature and conductivity while the ship is in motion. Various programs have been developed to assist in the collection and analysis of data from a TSG. Thermosalinograph · CC BY-SA 4.0 · rev. 1345090045
The measurement
Measured in i
One row per series, one cell per year, darker with more values — the same strip the front
door draws per dataset and a species page draws per taxon. Each row is one dataset's own
measurement_type; the label is written once, in the title above.
i
One row per series, one cell per year, darker with more values — the same strip the front door draws per dataset and a species page draws per taxon. Each row is one dataset's own measurement_type; the label is written once, in the title above.
-
series
uws_flow· source columnuws_flowno flag at this grain no P01 concept
How it is measured
Why it matters
The familiar scale i
Bars are each series' 5th–95th percentile, the line its minimum to maximum, the ring its median;
the marks are metadata/measurement_scale.csv's, each hovering to its own source.
i
Bars are each series' 5th–95th percentile, the line its minimum to maximum, the ring its median;
the marks are metadata/measurement_scale.csv's, each hovering to its own source.
The record’s own history i
i
The release builds no climatology for this measurement, so there is no normal to draw a departure from.
The record
Ways in i
Read from measurements.json of release
v2026.10.14, written at release by
calcofi4db::build_measurements_catalog() beside
taxa.json. The catalog's index is
/measurements/; the JSON-LD on this page is a
schema.org/DefinedTerm in the NERC P01 term set with a
PropertyValue per series.
Explorerdb-queryi
Read from measurements.json of release v2026.10.14, written at release by calcofi4db::build_measurements_catalog() beside taxa.json. The catalog's index is /measurements/; the JSON-LD on this page is a schema.org/DefinedTerm in the NERC P01 term set with a PropertyValue per series.
SELECT * FROM read_json('…/v2026.10.14/catalog.json')
-- objects[] WHERE table = 'obs_env'
-- AND partition_value = 'uws_flow'library(calcofi4r)
con <- cc_get_db() # the promoted release
tbl(con, "obs_env") |> filter(measurement_type %in% c("uws_flow"))import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_env WHERE measurement_type IN ('uws_flow')").df()By depth i
Values per depth band at the release grain, one thin bar per series. The bands are the
record's own (0-10 … 2000+ m).
i
Values per depth band at the release grain, one thin bar per series. The bands are the record's own (0-10 … 2000+ m).
By month i
Values per calendar month, one row per series: CalCOFI's quarterly cruises show as peaks in
the months the ships sail.
i
Values per calendar month, one row per series: CalCOFI's quarterly cruises show as peaks in the months the ships sail.
Range & quality
details
- bounds
- The registry declares
at least 0 L/minforuws_flow; a value outside it is dropped at the ingest (drop_out_of_bounds()). - observed
- Underway Meteorological (METS)
uws_flow0 · median 2.26 · 51.95 L/min (5th–95th percentile 0–9.745) - flags
- Underway Meteorological (METS)
uws_flowcarries no quality code at the release grain; qual_ok keeps all 42,445. - baseline
- No climatology row is built for this measurement, so the Explorer draws values, not anomalies.
Cite
Cite the release; each dataset's own citation, licence and DOI are on its page — Underway Meteorological (METS). The Explorer's Share → Cite writes it for the view you make.