Projects : Ocean Acidification

This buoy has been decommissioned.

Ala Wai Water Quality Buoy (WQB-AW)

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The Ala Wai Water Quality Buoy, managed by PacIOOS and NOAA PMEL, is located off the coast of Honolulu and near the mouth of the Ala Wai Canal. This canal tends to be subjected to urban run-off, potentially adding harmful micro-organisms and chemicals into the ocean. Therefore, in addition to providing surface ocean and atmospheric carbon dioxide (CO2) measurements, as plotted below, WQB-AW also measures salinity, temperature, chlorophyll, turbidity, and dissolved oxygen. These other variables can be viewed on the PacIOOS Water Quality Buoy Observations page.

The entire CO2 time series for WQB-AW is shown below. For closer inspection of the dataset, simply slide the striped black markers on the bottom right and left of the graph to narrow the time range. The CO2 for the air and sea water are in molar fractions (µmol/mol), meaning it is the molar amount that CO2 accounts for out of the total substance. To view all buoys simultaneously, click here to open PacIOOS Voyager.

Ala Wai Water Quality Buoy: xCO2 of Sea Water and xCO2 of Air in µmol/mol

Latest Data for Ala Wai Water Quality Buoy

Date and Time (UTC) xCO2 of Sea Water (µmol/mol) xCO2 of Air (µmol/mol) Sea Surface Salinity (PSU) Sea Surface Temp. (°C) pH of Sea Water
           

NOTE: These data have not been post-calibrated or quality controlled. For scientific usage, please access the delayed-mode, quality-controlled data at https://www.nodc.noaa.gov/ocads/oceans/time_series_moorings.html.