Top of Form

( \* =mandatory field)

-   **Investigator**:**\*( - )**

    -   **Name\***: Dr. Christopher Sabine

    -   **Organization**: NOAA/PMEL

    -   **Address**:

        NOAA/PMEL

        7600 Sand Point Way NE

> Seattle Washington, 98115 USA

-   **Phone:** 206-526-4809

-   **Email:** chris.sabine@noaa.gov

```{=html}
<!-- -->
```
-   **Dataset_Info**:**\*( - )**

    -   Dataset_ID**\***: TAO140W_0_Sep04_Mar05

    -   **Submission_Dates**:**\*( - )**

        -   Initial_Submission: 20061116 (YYYYMMDD)

        -   Revised_Submission: (YYYYMMDD)

-   **Cruise_Info**:**\*( - )**

    -   **Experiment**:**( - )**

        -   Experiment_Name**\***:

        -   **Cruise**:**( - )**

            -   Cruise_ID: (EXPOCODE)

            -   Section: (Leg)

            -   **Geographical_Coverage**:**\*( - )**

                -   Geographical_Region:

                -   **Bounds**:**\*( - )** 124.37W 0.18S

                    -   Westernmost_Longitude:\
                        Enter decimal fractions of degrees: -139.90W (+
                        = E, - = W)\
                        or Degrees, Minutes, Seconds:

                    -   Easternmost_Longitude:\
                        Enter decimal fractions of degrees:\
                        or Degrees, Minutes, Seconds:

                    -   Northernmost_Latitude:\
                        Enter decimal fractions of degrees: 0 (+ = E, -
                        = W)

                    -   Southernmost_Latitude:\
                        Enter decimal fractions of degrees:

            -   **Temporal_Coverage**:**( - )**

                -   Start_Date: 20040913 (YYYYMMDD)

                -   End_Date: 20050301 (YYYYMMDD)

    -   **Vessel**:**\*( - )**

        -   Vessel_Name:

        -   Vessel_ID:

        -   Country:

        -   Vessel_Owner:

Platform Identifier: Mooring

Mooring Location

Longitude: Enter decimal fractions of degrees: -139.90W (+ = E, - = W)

Latitude: Enter decimal fractions of degrees: 0 (+ = E, - = W)

Start_Date: 20040913 (YYYYMMDD)

End_Date: 20050301 (YYYYMMDD)

-   **Variables_Info**:**\*( - )**

    -   **Variable**:**( - )**

        -   Variable_Name**\***: (show pick list)

        -   Description_of_Variable: (E.g., in dry air)

> **\*\*General notes:**
>
> \- All measurements are at sea surface temperature and atmospheric
> pressure.
>
> \- During the equilibration cycle, a closed loop of air equilibrates
> with seawater for 10 minutes. Once the equilibration period is
> complete, the pump stops and the system opens to the atmosphere
> allowing the pressure to equilibrate with atmospheric pressure.
> Measurements are recorded for 30 seconds at 2 hertz and then averaged.
>
> \- During the air cycle, fresh air is pumped through the detector for
> 1 minute. Once the pump stops, the system opens to the atmosphere
> allowing the pressure to equilibrate with atmospheric pressure.
> Measurements are recorded for 30 seconds at 2 hertz and then averaged.
>
> \- The gas streams for both the air cycle and equilibrator cycle are
> partially dried before entering the detector. The values listed as wet
> xCO~2~ generally have relative humidity levels ranging from 40 to 80
> percent. The humidity levels increase over the course of a deployment.
>
> \- Sampling occurs every 3 hours. The infrared detector is calibrated
> at the beginning of every sampling period. Averaged data and standard
> deviations for each measurement are transmitted back daily.
>
> \- To calculate the dry measurements, the water mole fraction in the
> Licor detector must be known. A relative humidity sensor is located
> immediately downstream of the detector.
>
> \- As a final step in the QC process, each data set is compared with
> the Marine Boundary Layer (MBL) data from GlobalView-CO~2~. The data
> from this deployment, September 2004 to March 2005, were within 0.3
> umol/mol on average of the MBL data and therefore no correction was
> appliedumol/mol umol/mo. ...d.
>
> GLOBALVIEW-CO ~2~: Cooperative Atmospheric Data Integration Project -
> Carbon Dioxide. CD-ROM, NOAA CMDL, Boulder, Colorado \[Also available
> on Internet via anonymous FTP to ftp.cmdl.noaa.gov, Path:
> ccg/co2/GLOBALVIEW\], 2006

**Measured Information: (Variable Name/Description)**

> xCO~2~ SW (wet) (umol/mol) - Mole fraction of CO~2~ in air in
> equilibrium with the seawater at sea surface temperature and measured
> humidity.
>
> QF -- Quality Flag for xCO~2~ SW (wet).
>
> H~2~O (mmol/mol) - Mole fraction of H~2~O in air from equilibrator .
>
> xCO~2~ Air (wet) (umol/mol) - Mole fraction of CO~2~ in air from
> airblock, 4 feet above the sea surface at measured humidity.
>
> QF -- Quality Flag for xCO~2~ Air (wet)
>
> H~2~O (mmol/mol) - Mole fraction of H~2~O in air from airblock, 4 feet
> above the sea surface.
>
> Pressure of Licor (hPa) and Atm -- Atmospheric pressure at the
> airblock, 4 feet above the sea surface

Licor Temp (C) -- Temperature of the Infrared Licor 820 in degrees
Celsius

> \% Saturation of O~2~ - The percent oxygen of the surface seawater
> divided by the percent oxygen of the atmosphere at 4 feet above the
> sea surface
>
> SST (C) - Sea Surface Temperature collected by NOAA/PMEL/TAO. Next
> Generation ATLAS sites provide internally recorded SST data at 10
> minute resolution. The sea surface temperature collected during the
> equilibration period is reported in this dataset. The data presented
> here are not necessarily from the TAO finalized data set. The TAO
> Project Office advises to check the TAO site at the time of use for
> the most accurate data available.
>
> Salinity - Sea Surface Salinity collected by NOAA/PMEL/TAO. TAO
> records conductivity data at 10 minute intervals and then computes
> hourly averaged salinity during post-processing. The salinity reported
> during the equilibration period is reported in this dataset. The data
> presented here are not necessarily from the TAO finalized data set.
> The TAO Project Office advises to check the TAO site at the time of
> use for the most accurate data available.

**Derived Parameters:**

> xCO~2~ SW (dry) (umol/mol) -- Mole fraction of CO~2~ in air in
> equilibrium with the seawater at sea surface temperature (dry air).
>
> xCO~2~ Air (dry) (umol/mol) -- Mole fraction of CO~2~ in air at the
> airblock, 4 feet above the sea surface (dry air).
>
> fCO~2~ SW (sat) uatm -- Fugacity of CO~2~ in air in equilibrium with
> the seawater at sea surface temperature (100% humidity). Since the
> measurements are taken at the sea surface, warming calculations are
> not necessary.
>
> fCO~2~ Air (sat) uatm -- Fugacity of CO~2~ in air at the airblock, 4
> feet above the sea surface (100% humidity).
>
> dfCO~2~ -- Difference of the fugacity of the CO~2~ in seawater and the
> fugacity of the CO~2~ in air (fCO~2~ SW - fCO~2~ Air).

-   **Method_Description**:**\*( - )**

    -   **Equilibrator_Design**:**( - )**

        -   Equilibrator_Type: (show pick list) Bubble Equilibrator

        -   Equilibrator_Volume: (L) N/A

        -   Water_Flow_Rate: (L/min) N/A

        -   Headspace_Gas_Flow_Rate: (L/min) \~600 cc/min

        -   Vented: (show pick list) Yes

    -   Measurement_Method: Absolute, non-dispersive infrared (NDIR) gas
        analyzer

    -   Manufacturer_of_Calibration_Gas: NOAA CMDL (now Earth System
        Research

> Laboratory (ESRL)

-   **CO~2~\_Sensors**:**( - )**

    -   **CO~2~\_Sensor**:**( - )**

        -   Manufacturer: Licor

        -   Model: Environmental_Control: LI-820

        -   Resolution: 0.01 ppm

        -   Uncertainty: \< 2.5% of reading with 14 cm bench (stated)

> \<1.5 ppm determined in lab

-   CO~2~\_Sensor_Calibration: (For each calibration gas, document
    traceability to an internationally recognized scale, including date
    and place of last calibration. Include uncertainty of assigned
    value.)

> At the beginning of each sample, the instrument self-calibrates using
> a zero and high standard. The zero standard is generated by cycling a
> small amount of air through a soda lime chamber. The high standard is
> from a cylinder of calibrated standard reference gas, 547.19 umol/mol,
> from CMDL. CMDL standards are traceable to WMO x93 scale with a stated
> reproducibility of 0.06 micromole/mole. The standard used for this
> deployment was calibrated in July 2004. This cylinder is still in
> service and has not yet been post calibrated.

-   **Other_Sensors**:**( - )** Oxygen Sensor

    -   Manufacturer: Maxtec

    -   Model: Max-250

    -   Resolution: 0.01 %

    -   Uncert-ainty: ± 2.0% Full Scale over operating temperature range

> ± 1.0% Full Scale @ constant temperature and pressure

-   Calibration: (For each sensor of pressure, temperature, and
    salinity, document traceability to an internationally recognized
    scale, including date and place of last calibration.)

> Factory calibrated before purchase in July 2004.

-   **Other_Sensors**:**( - )** Humidity Sensor

    -   Manufacturer: Sensirion

    -   Model: SHT71

    -   Resolution: 0.01 %

    -   Uncertainty: Measurement range: 0-100% RH

> Absolute. RH accuracy: +/- 3% RH (20-80% RH)

Repeatability RH: +/- 0.1% RH

-   Calibration: (For each sensor of pressure, temperature, and
    salinity, document traceability to an internationally recognized
    scale, including date and place of last calibration.)

> Factory calibrated before purchase in July 2004.

-   Method_References: (Publication(s) describing method)

> Sabine, C. (2005): High-resolution ocean and atmosphere pCO~2~
> time-series measurements. The State of the Ocean and the Ocean
> Observing System for Climate, Annual Report, Fiscal Year 2004,
> NOAA/OGP/Office of Climate Observation, Section 3.32a, 246--253.

-   Data_set_References: (Publication(s) describing data set) None

```{=html}
<!-- -->
```
-   Citation: (How to cite this data set)

-   **Data_Set_Link**:**( - )**

    -   URL**\***:**(m s t)**![](media/image1.wmf)

    -   Label**\***:**(m s t)**![](media/image1.wmf)

    -   Link_Note: (Optional instructions or remarks)**(m s t)**

Quality Flags definitions:

2 = Acceptable measurement;

3 = Questionable measurement;

4 = Bad measurement

5 = Not reported;

9 = Sample not drown for this measurement from this bottle.

**Quality Flag Log for this dataset.**

Date Measurement Value (Dry) Flag Comments

9/15/2004 15:18 xCO2_SW 443.2062934 4 equilibrator problem

9/15/2004 18:18 xCO2_SW 425.0148151 4 equilibrator problem

9/16/2004 3:18 xCO2_SW 418.0648408 4 equilibrator problem

9/16/2004 6:18 xCO2_SW 367.6469568 4 equilibrator problem

9/16/2004 9:18 xCO2_SW 404.4034474 4 equilibrator problem

9/19/2004 15:18 xCO2_SW 414.6845122 4 equilibrator problem

9/19/2004 18:18 xCO2_SW 401.7173102 4 equilibrator problem

9/23/2004 18:18 xCO2_SW 414.5803649 4 equilibrator problem

9/23/2004 21:18 xCO2_SW 458.1669079 4 equilibrator problem

9/26/2004 18:18 xCO2_SW 382.0779186 4 equilibrator problem

9/26/2004 21:18 xCO2_SW 369.2615023 4 equilibrator problem

9/27/2004 0:18 xCO2_SW 402.1920054 4 equilibrator problem

9/27/2004 3:18 xCO2_SW 450.1200753 3 possible equilibrator problem

9/27/2004 6:18 xCO2_SW 457.2102515 3 possible equilibrator problem

9/27/2004 9:18 xCO2_SW 443.7895409 3 possible equilibrator problem

9/27/2004 12:18 xCO2_SW 449.9727702 3 possible equilibrator problem

9/27/2004 15:18 xCO2_SW 452.6063829 3 possible equilibrator problem

9/27/2004 18:18 xCO2_SW 433.9885597 4 equilibrator problem

9/27/2004 21:18 xCO2_SW 415.2897357 4 equilibrator problem

9/28/2004 0:18 xCO2_SW 435.8516061 4 equilibrator problem

9/28/2004 3:18 xCO2_SW 450.488128 3 possible equilibrator problem

9/28/2004 6:18 xCO2_SW 454.2965594 3 possible equilibrator problem

9/28/2004 9:18 xCO2_SW 393.9210831 4 equilibrator problem

9/28/2004 12:18 xCO2_SW 433.9809982 3 possible equilibrator problem

9/28/2004 15:18 xCO2_SW 453.0766243 3 possible equilibrator problem

9/28/2004 18:18 xCO2_SW 464.6675869 3 possible equilibrator problem

9/28/2004 21:18 xCO2_SW 445.4006126 3 possible equilibrator problem

9/29/2004 0:18 xCO2_SW 433.2518963 4 equilibrator problem

9/29/2004 3:18 xCO2_SW 451.7909966 3 possible equilibrator problem

9/29/2004 6:18 xCO2_SW 455.4469655 3 possible equilibrator problem

9/29/2004 9:18 xCO2_SW 452.0662375 3 possible equilibrator problem

9/29/2004 12:18 xCO2_SW 415.4087912 4 equilibrator problem

9/29/2004 15:18 xCO2_SW 427.33914 4 equilibrator problem

9/29/2004 18:18 xCO2_SW 453.1390227 3 possible equilibrator problem

9/29/2004 21:18 xCO2_SW 423.4050176 4 equilibrator problem

9/30/2004 0:18 xCO2_SW 399.4848 4 equilibrator problem

9/30/2004 3:18 xCO2_SW 417.9064419 4 equilibrator problem

9/30/2004 6:18 xCO2_SW 446.2191085 4 equilibrator problem

9/30/2004 9:18 xCO2_SW 455.294588 4 equilibrator problem

9/30/2004 12:18 xCO2_SW 418.2041091 4 equilibrator problem

9/30/2004 15:18 xCO2_SW 402.0630781 4 equilibrator problem

9/30/2004 18:18 xCO2_SW 449.2795538 3 possible equilibrator problem

10/2/2004 3:18 xCO2_SW 438.4403127 3 possible equilibrator problem

10/2/2004 15:18 xCO2_SW 445.2149443 3 possible equilibrator problem

10/2/2004 18:18 xCO2_SW 426.0457477 3 possible equilibrator problem

10/2/2004 21:18 xCO2_SW 415.9759603 3 possible equilibrator problem

10/3/2004 0:18 xCO2_SW 443.4952125 3 possible equilibrator problem

12/13/2004 6:18 xCO2_SW 473.7530715 3 bad cal , data point is probably 6
ppm high

12/13/2004 6:18 xCO2_Air 383.5340191 3 bad cal , data point is probably
6 ppm high

12/22/2004 6:18 xCO2_SW 491.7527288 3 bad cal, data point probably 7 ppm
high

12/22/2004 6:18 xCO2_Air 384.4240789 3 bad cal, data point probably 7
ppm high

12/23/2004 3:18 xCO2_SW 481.4124033 3 bad cal, data point probably 7 ppm
low

12/23/2004 3:18 xCO2_Air 370.6120547 3 bad cal, data point probably 7
ppm low

8/9/2005 12:17 xCO2_Air 377.4 3 Cal error, may be 3 lowBottom of Form