Dataset: underway_met
Deployment: W0004B

underway MET data collected on GLOBEC LTOP cruises aboard R/V Wecoma

Principal Investigator:

Adriana Huyer (Oregon State University, OSU-CEOAS)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. GLOBEC Northeast Pacific (NEP)

Current State:

Final no updates expected

Version:

May 04 2012

Version Date:

2012-05-04

Data URL:

https://www.bco-dmo.org/dataset-deployment/455124/data

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Description

Underway MET data collected on GLOBEC Long Term Observation Program (LTOP) cruises (1998-2004) aboard R/V Wecoma. Data are preliminary. No error-checking or in-situ calibrations (except for salinity) have been performed. Underway temperature and salinity calibration information is listed in the sensor calibration table (PDF).

Methods & Sampling

Dataset acquisition description

Beginning in April 1999, underway data acquisition system (DAS) files from the R/V Wecoma were recorded in ASCII, and filtered by a perl script known as filterdas to calculate engineering units. The DAS files produced were comma-separated ASCII files, with one file per day at one minute sampling intervals. More information is available from Oregon State University about the Wecoma's DAS and the filtering script. BCO-DMO obtained the underway data from http://ltop.coas.oregonstate.edu/das.html

Data Processing Description

Dataset Processing Description

Parameter names were replaced to conform with BCO-DMO conventions. Values of '-999999', '9999.9990', and 'NaN' were replaced with 'nd'. The original latitude degree and minute data stored in the pcode_lat_deg and pcode_lat_min columns were merged into a single column (lat). The original longitude data stored in the pcode_long_deg and pcode_long_min columns were merged into a single column (lon). lat and lon were reformatted to decimal degrees.

More information about this dataset deployment

Funding

Award Number	Funding Source
NA67RJ0151 (NEP)	National Oceanic and Atmospheric Administration
NA86OP0589 (NEP)	National Oceanic and Atmospheric Administration
OCE-0000733	NSF Division of Ocean Sciences
OCE-9732386	NSF Division of Ocean Sciences

Instruments

Anemometer

Supplied Description:

Sonic anemometer, approx. 20 m height above waterline

Instrument Type

Generic Name: Anemometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/101/

Generic Description:

An anemometer is a device for measuring the velocity or the pressure of the wind. It is commonly used to measure wind speed. Aboard research vessels, it is often mounted with other meteorological instruments and sensors.

CTD Sea-Bird

Supplied Description:

SeaBird CTD system, including: CTD and Carousel sampler in frame, water bottles, dual C and T sensors, Oxygen sensor, 25 cm transmissometer, fluorometer, altimeter, bottom trip switch, PAR sensor data acquisition and storage system, complete backup systems.

Instrument Type

Generic Name: CTD Sea-Bird

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

Global Positioning System Receiver

Supplied Description:

GPS - Northstar 951XDW receiver in the pilothouse and a remote display in the Dry Lab.
GPS 'P-Code' Receiver - Trimble Tasman.

Instrument Type

Generic Name: Global Positioning System Receiver

Acronym: GPS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/POS03/

Generic Description:

The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude.

Knudsen 320 BR deepwater echosounder

Supplied Description:

Knudsen 320B/R dual-frequency digital echosounder (12 kHz and 3.5 kHz). 12 kHz transducer is a single EDO 323B, 3.5 kHz is an array of sixteen ORE 137D transducers in a 4x4 configuration.

Instrument Type

Generic Name: Knudsen 320 BR deepwater echosounder

Acronym: Knudsen 320

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/156/

Generic Description:

The Knudsen 320 B/R deepwater echosounder is a digital data logging system used to measure water depth (e.g. depth of the seafloor). The system is configured to work with different frequency transducers. For example, the Edo 323 B is a 12 kHz High Frequency (HF) transducer or it can be configured to work with an array of 3.5 kHz Low Frequency (LF) transducers mounted in the hull of a vessel.

Thermosalinograph

Supplied Description:

Thermosalinograph, located at 5 m.

Instrument Type

Generic Name: Thermosalinograph

Acronym: TSG

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/133/

Generic Description:

A thermosalinograph (TSG) is used to obtain a continuous record of sea surface temperature and salinity. On many research vessels the TSG is integrated into the ship's underway seawater sampling system and reported with the underway or alongtrack data.

Turner Designs Fluorometer 10-AU

Supplied Name: Turner Designs Fluorometer -10-AU

Supplied Description:

Turner Designs model 10-AU fluorometer, with grab sample or flow-through cuvettes. Interfaces to DAS data logger

Instrument Type

Generic Name: Turner Designs Fluorometer 10-AU

Acronym: Turner Fluorometer 10-AU

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0393/

Generic Description:

The Turner Designs 10-AU Field Fluorometer is used to measure Chlorophyll fluorescence. The 10AU Fluorometer can be set up for continuous-flow monitoring or discrete sample analyses. A variety of compounds can be measured using application-specific optical filters available from the manufacturer. (read more from Turner Designs, turnerdesigns.com, Sunnyvale, CA, USA)

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruiseid	Cruise identifier	dimensionless	cruiseid
year	Year, GMT e.g. 1997.	dimensionless	year
month_gmt	Month of year, GMT. Calculated from yrday and year.	month, 1-12	month_gmt
day_gmt	Day of month, GMT. Calculated from yrday and year.	day, 1-31	day_gmt
lat	Latitude (south is negative). Decimal degrees calculated from degrees/decimal minutes. Originally named 'pcode_lat_deg' and 'pcode_lat_min'.	decimal degrees	lat
lon	Longitude (west is negative). Decimal degrees calculated from degrees/decimal minutes. Originally named 'pcode_long_deg' and 'pcode_long_min'.	decimal degrees	lon
depth_w_12	Water depth in meters recorded by high frequency (12 kHz) transducer. Originally named 'echosounder_hf_value'.	meters	depth_w
temp_air	Air temperature. Originally named 'air_temp_osu_doghouse' or 'air_temp_rmyoung_doghouse' (depending on cruise).	degrees C	temp_air
humidity	Percent relative humidity. Originally named 'humidity_vaisela_doghouse'.	percent	humidity
press_bar	Barometric pressure in millibars. Originally named 'baro'.	millibars	press_bar
temp_ss5	Sea surface temperature measured by the thermosalinograph located 5 m below the water's surface. Originally named 'water_temp_seabird_flothru'.	degreesC	temp_ss5
sal_ss5	Sea surface salinity, measured from thermosalinograph located 5 m below water surface.	PSU	no_bcodmo_term
temp_air2	Air temperature from second source. Originally named 'air_temp_vaisela_doghouse'.	degrees C	temp_air
yrday	Day of the year. Originally named 'truetime_day'.	yearday, 1-365	yrday
wind_speed	Wind speed measured in m/s. Originally named 'wind_speed_doghouse'.	m/s	wind_speed
radiation_s	Shortwave radiation. Originally named 'down_welling_shortwave_psp_doghouse'.	watts/m^2	radiation_s
PAR_doghouse	PAR measured in quanta/cm^2/sec. (6 x 10^17 quanta/m^2/sec = 1 microEinstein(uE)/m^2/sec). Originally named 'down_welling_par_doghouse'.	quanta/(cm^2*s)	no_bcodmo_term
radiation_l	Longwave radiation. Originally named 'down_welling_longwave_doghouse'.	watts/m^2	radiation_l
wind_dir_stbd	Wind direction measured on the starboard side in degrees from true North. Originally named 'wind_heading_starboard'.	degrees from true North	wind_dir
wind_dir_port	Wind direction measured on the port side in degrees from true North. Originally named 'wind_heading_port'.	degrees from true North	wind_dir
wind_speed_kts_stbd	Wind speed in knots, measured from the starboard side of the ship. Originally named 'wind_speed_starboard'.	knots	wind_speed_kts
wind_speed_kts_port	Wind speed in knots, measured from the port side of the ship. Originally named 'wind_speed_port'.	knots	wind_speed_kts
cond_ss5	Sea surface conductivity, measured by sensor 5 m below the water's surface. Originally named 'conductivity_seabird_flothru'.	siemens/meter	no_bcodmo_term
temp_ss	Sea surface temperature. Originally named 'water_temp_seabird_engineroom'.	degrees C	SST
flvolt_mV	Fluorometer reading in milliVolts (relative value). Originally named 'fluorometer_value_met2'.	milliVolts	fluor_mV
speedlog_long	Speed ahead in knots. Originally named 'speedlog_water_longitude'.	knots	no_bcodmo_term
speedlog_trans	Speed to starboard (transverse). Originally named 'speedlog_water_transverse'.	knots	no_bcodmo_term
gyro	The gyro's reading in degrees from true North. Originally named 'gyro_compass' or 'syncro' (depending on the cruise).	degrees from true North	no_bcodmo_term
temp_pir_case	Temperature of the PIR case. Originally named 'pir_case_temp'.	degrees C	no_bcodmo_term
temp_pir_hemi	Temperature of the PIR hemisphere. Originally named 'pir_hemisphere_temp'.	degrees C	no_bcodmo_term
ship	Name of the ship.	dimensionless	ship
cog	cog; units not supplied.	unknown	cog
sog	sog; units not supplied.	unknown	sog
time_gmt	Time, in GMT format. Calculated from hour_gmt and minute_gmt (which were originally named 'pcode_hour' and 'pcode_minute').	HHMM	time_gmt
ISO_DateTime_UTC	Date and time in ISO 8601 format: yyyy-mm-ddTHH:MM:SS.	yyyy-MM-dd'T'HH:mm:ss.S	ISO_DateTime_UTC

Database

Contribute Data

Dataset: underway_met
Deployment: W0004B

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: underway_metDeployment: W0004B

Dataset acquisition description

Dataset Processing Description

Dataset: underway_met
Deployment: W0004B