Dataset: surface drifters

Name: Surface drifter measurements of temperature and drogue tension from cruises KOK1108 and MR11-06 in the Western Equatorial Pacific and Kuroshio Extension (Fukoshima Radionuclide Levels project)
Published: 2012-08-10
Keywords: oceans

Cite This Dataset

Spatial Extent: N:45.03 E:140.4 S:25.83 W:-169.85

Project:

Establishing Radionuclide Levels in the Atlantic and Pacific Oceans Originating from the Fukushima Daiichi Nuclear Power Facility (Fukushima Radionuclide Levels)

Principal Investigator:

Dr Steven R. Jayne (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Theresa McKee (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

10 August 2012

Version Date:

2012-08-10

Validated:

Yes

Current State:

Final with updates expected

Surface drifter measurements of temperature and drogue tension from cruises KOK1108 and MR11-06 in the Western Equatorial Pacific and Kuroshio Extension (Fukoshima Radionuclide Levels project)

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Description

Surface drifter measurements of temperature and drogue tension from 36 instruments deployed as part of the Fukushima radiation study: Establishing Radionuclide levels in the Atlantic and Pacific Oceans Originating from the Daiichi Nuclear Power Facility.

Methods & Sampling

Hourly measurements of sea surface temperature and drogue tension were recorded.

Data Processing Description

Hourly data was interpolated to six hours for the final data set. Drogue tension was checked manually to check the drifter's function.

Data Files

File
surface_drifters.csv (Comma Separated Values (.csv), 2.47 MB) MD5:7a039d9b7a15201775b95bf192ba8abf Primary data file for dataset ID 3677

More Information about this dataset

Funding Sources

Funding Source	Award Number
Gordon and Betty Moore Foundation	unknown Fukushima Radionuclide Levels Moore
NSF Division of Ocean Sciences	OCE-1136693

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KOK1108	Fukushima KOK	2011-06-04	R/V Ka`imikai-O-Kanaloa	Kenneth O. Buesseler (Chief Scientist)	data info
MR11-06		2011-08-13	R/V MIRAI	Mr Yuji Kashino (Chief Scientist)	data info

Instruments

Drifter Buoy

Supplied Description:

SVP and SVP-barometer drifters

Instrument Type

Generic Name: Drifter Buoy

Generic Description:

Drifting buoys are free drifting platforms with a float or buoy that keep the drifter at the surface and underwater sails or socks that catch the current. These instruments sit at the surface of the ocean and are transported via near-surface ocean currents. They are not fixed to the ocean bottom, therefore they "drift" with the currents. For this reason, these instruments are referred to as drifters, or drifting buoys.

The surface float contains sensors that measure different parameters, such as sea surface temperature, barometric pressure, salinity, wave height, etc. Data collected from these sensors are transmitted to satellites passing overhead, which are then relayed to land-based data centers.

definition sources: https://mmisw.org/ont/ioos/platform/drifting_buoy and https://www.aoml.noaa.gov/phod/gdp/faq.php#drifter1

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
lat	latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes	decimal degrees	lat
lon	longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degress, minutes	decimal degrees	lon
temp_ss	sea surface temperature, depth of temp sensor unknown or variable, degrees C.	degrees Celsius	SST
tension_drogue_drifter	tension sensor on drifter buoy drogue	voltage	tension_drogue_drifter
event	event or operation number; often derived from date/time (MMDDHHmm) of sampling and when combined with year (YYYY) is a unique sampling identifier/data processing key. Date/time is not necessarily in GMT. For Fukushima surface drifters, the date time are in local time.	dimensionless	event
date	date of sample	yyyymmdd	date
time	time of sample	hhmm	time
drifterid	drifter identification, used with drifter deployments	dimensionless	drifterid
start_date	date of first measurement	yyyymmdd	start_date
end_date	date of last measurement	yyyymmdd	end_date
start_time	time of first sample	hhmm	time_start
end_time	time of last measurement	hhmm	time_end
sta	station number identifying data collection site	dimensionless	sta
julian_day_yr0	A serial date number representing the whole and fractional number of days from a specific date and time, where 1 = January 1, 0000 00:00:00. (The year 0000 is merely a reference point and is not intended to be interpreted as a real year in time.	dimensionless	julian_day_yr0
cruise	Cruise identifier	dimensionless	cruiseid

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Dataset: surface drifters