Dataset: UDAS

Name: Underway Data Acquisition System (UDAS) data from R/V Point Sur cruise PS1312 along the Central California coast from June to July of 2013 (Diatom Group Si Prod project)
Published: 2017-08-29
Keywords: oceans

Cite This Dataset

Spatial Extent: N:38.32676 E:-121.8024 S:36 W:-123.98623

Temporal Extent: 2013-06-27 - 2013-07-05

Project:

Group-Specific Diatom Silica Production in a Coastal Upwelling System (Diatom Group Si Prod)

Principal Investigator:

Jeffrey W. Krause (Dauphin Island Sea Lab, DISL)

Scientist:

Mark A. Brzezinski (University of California-Santa Barbara, UCSB)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version Date:

2017-08-29

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Underway Data Acquisition System (UDAS) data from R/V Point Sur cruise PS1312 along the Central California coast from June to July of 2013 (Diatom Group Si Prod project)

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Description

This dataset contains temperature, conductivity, turbidity, fluorometry, and meteorological data from the Underway Data Acquisition System (UDAS) on the R/V Point Sur cruise PS13-12 between 2013-06-27 to 2013-07-05.

Methods & Sampling

The Underway Data Acquisition System (UDAS) on the R/V Point Sur consists of a suite of meteorological and sea surface sensors sampling at ~ 1 Hz, the entire duration the vessel is away from the dock. A constant flow of seawater (originating from an intake on the ship's seachest, just below the sea surface, ~ 2.5m) feeds the sensors and drains into a sink/drain in the Main Lab where it may be sampled by scientists or plumbed to science supplied equipment. The meteorological sensors are located on the mast above the Wheelhouse. All data is interfaced and collected on one computer located in the ET lab, via SCS, a data collection application developed by NOAA.

Acquisition description source (Moss Landing Marine Laboratories): https://marineops.mlml.calstate.edu/PS-UDAS (now broken as of 2017-08-30)

Data Processing Description

Cleaning steps performed by data contributor before being sent to BCO-DMO:
- All daily csv files combined to master file.
- "-999" = "no data"
- All "NaN" turned to "-999"
- combined Latitude & Longitude degrees, minutes, seconds into Decimal degrees
-- Eliminated columns:
-- Ashtech GPS coordinates (No long data recorded)
-- Rel_STBD_WD (no dynamic range, nearly all data ~270)
-- Rel STBD WS (no dynamic range, all data 0)
-- As in original excel sheet the following were omitted: SSC, SWDI, LWDI, PIR PSP, PIR dome C, PIR case C, PIR V therm, AVG Circ C, Battery V
- Eliminated the following data points and changed to -999
- Air temp F (3 values, 449, 454, 486)
-- Air temp C (3 values, 231, 234, 252)
-- Solar radiation (2 values, 13934, 1991)
-- SST (94 values recorded from 68 to -83)
- Salinity (8 values >40)
-- Xmiss% (325 values, % <0)
-- Fluoro (1 value <0)

BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date (can't use spaces, slashes, percent signs)
* modified parameter names to conform with BCO-DMO naming conventions
* -999 values changed to "nd" for no data so they are recognized in our system
* ISO timestamp added based on YMD, and HMS fields
* SST, Salinity, SST_TSAL rounded to three decimal places, lat/lon rounded to 5 decimal places

Data Files

File
UDAS.csv (Comma Separated Values (.csv), 5.16 MB) MD5:c378876cea0cae1893b61362f8c59db8 Primary data file for dataset ID 701571

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1155663

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
PS1312	DYEatom	2013-06-27	R/V Point Sur	Jeffrey W. Krause (Chief Scientist)	data info

Instruments

Fluorometer

Supplied Name: Fluorometer Wetlabs ECO Chla

Supplied Description:

Instrument Type

Generic Name: Fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

LI-COR Biospherical PAR Sensor

Supplied Name: Biospherical Par Model (QSR2200)

Supplied Description:

Instrument Type

Generic Name: LI-COR Biospherical PAR Sensor

Acronym: LI-COR Biospherical PAR

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0074/

Generic Description:

The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.

Meteorological Station

Supplied Name: Wind Speed (RMYoung 05108)

Supplied Description:

R.M. Young company Heavy Duty Wind Monitor-HD Model 05108

Instrument Type

Generic Name: Meteorological Station

Acronym: MET Station

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/102/

Generic Description:

MET station systems are designed to record meteorological information on board ships or mounted on moorings. These are commonly referred to as EMET (Electronic Meteorological Packages) or IMET (Improved Meteorological Packages) systems. These sensor packages record measurements of sea surface temperature and salinity, air temperature, wind speed and direction, barometric pressure, solar and long-wave radiation, humidity and precipitation.

Meteorological Station

Supplied Name: Air Temp/RH (RMYoung 41382)

Supplied Description:

R.M. Young Company Temperature Probes
Model 41342

Instrument Type

Generic Name: Meteorological Station

Acronym: MET Station

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/102/

Generic Description:

Meteorological Station

Supplied Name: Barometer (RMYoung 61302)

Supplied Description:

R.M. Young Company Model 61302 Barometric Pressure Sensor

Instrument Type

Generic Name: Meteorological Station

Acronym: MET Station

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/102/

Generic Description:

Photosynthetically Available Radiation Sensor

Supplied Name: Li-Core Model Pyranometer (Radiation)

Supplied Description:

Instrument Type

Generic Name: Photosynthetically Available Radiation Sensor

Acronym: PAR sensor

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/122/

Generic Description:

A PAR sensor measures photosynthetically available (or active) radiation. The sensor measures photon flux density (photons per second per square meter) within the visible wavelength range (typically 400 to 700 nanometers). PAR gives an indication of the total energy available to plants for photosynthesis. This instrument name is used when specific type, make and model are not known.

Sea-Bird SeaCAT Thermosalinograph SBE 21

Supplied Name: Sea Water Temp/Salinity (SBE 21)

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SeaCAT Thermosalinograph SBE 21

Acronym: SeaBird SBE-21 Seacat

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0667/

Generic Description:

A platinum-electrode conductivity sensor and a thermistor mounted in a corrosion-resistant plastic and titanium housing designed to be continuously plumbed into a vessel's pumped seawater supply. The instrument may be interfaced to a remote SBE 38 temperature sensor mounted either on the hull or in the seawater inlet. Data are both stored in internal memory and output to a serial port for external logging. Conductivity is measured in the range 0-7 S/m with an accuracy of 0.001 S/m and a resolution of 0.0001 S/m. Housing temperature is measured in the range -5-35C with an accuracy of 0.01 C and a resolution of 0.001 C. Remote temperature is measured in the range -5-35C with an accuracy of 0.001 C and a resolution of 0.0003 C. More information at http://www.seabird.com/products/spec_sheets/21data.htm.

Transmissometer

Supplied Name: Xmiss Wetlabs CST

Supplied Description:

unknown if 25cm or 10cm

Instrument Type

Generic Name: Transmissometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/124/

Generic Description:

A transmissometer measures the beam attenuation coefficient of the lightsource over the instrument's path-length. This instrument designation is used when specific manufacturer, make and model are not known.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Tag	Tag from acquisition system	unitless	sample_descrip
Call_Sign	Call sign	unitless	sample_descrip
YMD	Date (UTC) in format YYYYMMDD	unitless	date
HMS	Time (UTC) in format HHMMSS	unitless	time
ISO_DateTime_UTC	ISO timestamp based on the ISO 8601:2004(E) standard in format YYYY-mm-ddTHH:MM:SSZ (UTC)	unitless	ISO_DateTime_UTC
Lat_Furuno_Degree	Latitude	decimal degrees	lat
Lon_Furuno_Degree	Longitude	decimal degrees	lon
Ashtech_Heading	Ashtech Instrument	degrees	heading
Gyro_Heading	Ship's Gyroscope heading	degrees	heading
Average_Raw_Gyro	Ship's Gyroscoe heading (average of raw)	degrees	heading
COG	Course over ground	degrees	cog
SOG	Speed over ground	knots	sog
True_STBD_WD	True Starboard Wind Direction	degrees	wind_dir
True_STBD_WS	True Starboard Wind Speed	knots	wind_speed
Rel_PORT_WD	Relative Port Wind Direction	degrees	wind_dir
Rel_PORT_WS	Relative Port Wind Speed	knots	wind_speed
True_PORT_WD	True Port Wind Direction	degrees	wind_dir
True_PORT_WS	True Port Wind Speed	knots	wind_speed
Air_temp_F	Air temperature	Degrees Fahrenheit	temp_air
Air_temp_C	Air temperature	Degrees Celsius	temp_air
Barometer_mBar	Barometric pressure	millibars	press_bar
Barometer_in_Hg	Barometric pressure	inches of mercury	press_bar
Humidity_percent	Air humidity	relative percent	humidity
Solar_radiation	Solar Radiation	W/m2	irradiance
STW	Speed Through the Water	Knots	speed_f_w
SST	Sea Surface Temperature	degrees Celsius	SST
Salinity	Salinity	practical salinity units (PSU)	sal
SST_TSAL	Sea Surface Temperature used in salinity calculation	degrees Celsius	SST
Xmiss_V	Light transmission	volts (V)	trans
Xmiss_percent	Transmission	percent (%)	trans
Xmiss_BAC	Transmission Beam Attenuation Coefficient	per meter (1/m)	beam_cp
SPAR_V	Surface Photosynthetically Active Radiation, PAR	volts (V)	SPAR
SPAR	Surface Photosynthetically Active Radiation, PAR	microeinsteins per square meter per second (uE/m2/s)	SPAR
Fluoro	Chlorophyll fluroescence	milligrams per meter cubed (mg/m3)	fluor

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Dataset: UDAS