Dataset: XBT

Name: XBT data from R/V Atlantis II cruise AII-119-5 in the North Atlantic in 1989 (U.S. JGOFS NABE project)
Published: 1995-06-27
Keywords: oceans

Cite This Dataset

Spatial Extent: N:46.68 E:-17.75 S:42 W:-22.4

Project:

U.S. JGOFS North Atlantic Bloom Experiment (NABE)

Program:

U.S. Joint Global Ocean Flux Study (U.S. JGOFS)

Principal Investigator:

Dennis J. McGillicuddy (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

June 27, 1995

Version Date:

1995-06-27

Validated:

Yes

Current State:

Final no updates expected

XBT data from R/V Atlantis II cruise AII-119-5 in the North Atlantic in 1989 (U.S. JGOFS NABE project)

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Description

XBT Data

Methods & Sampling

   PI:              Dennis McGillicuddy
   of:              Woods Hole Oceanographic Institution
   dataset:         XBT data
   dates:           May 16, 1989 to May 22, 1989
   location:        N: 46.68  S: 42  W: -22.4  E: -17.75
   project/cruise:  North Atlantic Bloom Experiment/Atlantis II 119, leg 5
   ship:            Atlantis II


 Processing comments Dennis McGillicuddy, Harvard University

 It is our experience that the actual drop rate of T-7 XBTs is about 6
 percent faster than accounted for by the Sippican drop rate equation.
 We therefore applied a uniform stretch to each profile of 1.065.
 Intercomparison of an XBT profile (station 10) with the nearest CTD
 station showed similar structure but substantial offset (1.2
 degrees)." A 1.2 degree adjustment (added) has been applied to each XBT.

Data Files

File
xbt.csv (Comma Separated Values (.csv), 1.02 MB) MD5:27ec113450c3ffaad9ec6e9d30f14d92 Primary data file for dataset ID 2605

More Information about this dataset

Funding Sources

Funding Source	Award Number
National Science Foundation	unknown NABE NSF

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AII-119-5		1989-05-15	R/V Atlantis II	Hugh W. Ducklow (Chief Scientist)	data info

Instruments

Expendable Bathythermograph

Supplied Description:

Instrument Type

Generic Name: Expendable Bathythermograph

Acronym: XBT

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/132/

Generic Description:

An XBT is an expendable free-fall temperature probe that provides a profile of measured temperature against depth calculated from a fall-rate model. For example, two popular XBT models are the T-5 and T-7 probes from Sippican. More information is available from Lockheed Martin Sippican at URL: http://www.sippican.com/.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
xbt_num	originator assigned castprofile number		no_bcodmo_term
date	date reported as YYYYMMDD		date
time	time reported as HHMM		time
lat	latitude, negative values denote South	decimal degrees	lat
lon	longitude, negative values denote West	decimal degrees	lon
depth	water depth	meters	depth
temp	water temperature, Centigrade	degrees Celsius	temp

Database

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Dataset: XBT