Thermosalinograph Data of the Hawaii Ocean Time-series (HOT) program in the North Pacific 100 Miles North of Oahu, Hawaii for Cruises HOT122-154 during 2001-2003. (NODC Accession 0001710)

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Dr. Roger Lukas
Publication_Date: Unknown
Title:
Thermosalinograph Data of the Hawaii Ocean Time-series (HOT) program in the North Pacific 100 Miles North of Oahu, Hawaii for Cruises HOT122-154 during 2001-2003. (NODC Accession 0001710)
Series_Information:
Series_Name: None
Issue_Identification: None
Publication_Information:
Publication_Place: Unpublished Material
Publisher: Unpublished material
Online_Linkage: https://www.ncei.noaa.gov/archive/accession/0001710
Description:
Abstract:
The HOT program makes repeated observations of the physics, biology and chemistry at a site approximately 100 km north of Oahu, Hawaii. Two stations are visited about once a month: Kahe Point (Station 1: 21.34N, 158.27W) and Station ALOHA (Station 2: 22.75N, 158W). Various other stations are made intermittently in support of similar research objectives or mooring deployments.

HOT thermosalinograph data have been obtained since cruise 63 using a SBE-21 Seacat thermosalinograph system. Data are recorded every 10 seconds from water collected by a continuous seawater system aboard each vessel from a depth of about 3 meters.

Purpose:
The objective of the physical component of HOT is to describe and understand the ocean climate and variability at a deep-water site in the North Pacific subtropical gyre near Hawaii. This requires a long time series of physical oceanographic variables, including water mass properties and currents, supporting and complementing the objectives of the biogeochemical component of HOT.
Supplemental_Information:
Entry_ID Unknown Sensor_Name SBE-21 Seacat thermosalinograph system Source_Name ship Project_Campaign: Hawaii Ocean Time series (HOT) Originating_Center University of Hawaii Storage_Medium ASCII Reference None Online_size: 60.568 Mbytes; 73 files
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010115
Ending_Date: 20031222
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: quasi-monthly cruises
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -158.27
East_Bounding_Coordinate: -158.00
North_Bounding_Coordinate: 22.75
South_Bounding_Coordinate: 21.34
Keywords:
Theme:
Theme_Keyword_Thesaurus: NCEI Geoportal Filter
Theme_Keyword: CoRIS_Metadata
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: thermosalinograph
Theme_Keyword: temperature
Theme_Keyword: salinity
Theme_Keyword: temperature and salinity time series
Theme_Keyword: Hawaii Ocean Time Series (HOT)
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature
Theme_Keyword: EARTH SCIENCE > Oceans > Salinity/Density > Salinity
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: 014
Theme_Keyword: environment
Theme_Keyword: 007
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Numeric Data Sets > Oceanography
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Station Aloha
Place_Keyword: Kahe Point
Place_Keyword: Kaena Point
Place_Keyword: Oahu
Place_Keyword: Hawaii
Place_Keyword: HALE ALOHA
Place_Keyword: Pacific
Place_Keyword: central north Pacific
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: MHI
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii > Kahe (21N158W0001)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Kahe (21N158W0001)
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003)
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii > Hawaii (21N160W0000)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii (21N160W0000)
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: complete ocean profile surface to bottom
Access_Constraints: None
Use_Constraints: Dataset credit required
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dr. Roger Lukas
Contact_Organization:
Department of Oceanography
School of Ocean and Earth Science and Technology
University of Hawaii
Contact_Position: Principal Investigator-- Physical data (non-ADCP)
Contact_Address:
Address_Type: Mailing and physical address
Address: 1000 Pope Rd
Address: Marine Science Bldg. Room 418
City: Honolulu
State_or_Province: HI
Postal_Code: 96822
Country: USA
Contact_Voice_Telephone: 808-956-7892
Contact_Electronic_Mail_Address: rlukas@soest.hawaii.edu
Data_Set_Credit:
1) Hawaii Ocean Time-series (HOT) (Lukas and Karl) 2) World Ocean Circulation Experiment (WOCE) (officially ended in 1998) 3) Joint Global Ocean Flux Study (JGOFS) HOT was initiated and funded through grants from the National Science Foundation under the auspices of the Joint Global Ocean Flux Study (JGOFS) and the World Ocean Circulation Experiment (WOCE). The field phase of these programs has ended, but support from the Ocean Sciences Division of NSF has enabled continuation of our basic HOT measurement program until mid-2001. The PO component contributes to the objectives of the World Climate Research Programme (WCRP) Climate Variability and Predictability (CLIVAR) Programme by providing information on interannual to decadal variability of the North Pacific Ocean.

Data transfer to NOAA via the NODC/NCDDC Hawaii Liaison, Mr.Patrick C. Caldwell.

Native_Data_Set_Environment: ASCII text files, FORTRAN/C ready

Data_Quality_Information:
Logical_Consistency_Report: see methodology
Completeness_Report: quality control completed
Lineage:
Process_Step:
Process_Description:
Each of the (approximately monthly) HOT cruises follows the same basic pattern with some flexibility for ancillary projects to be done after the core sampling has been completed. During transit from Honolulu to the time-series station ALOHA (A Long-term Oligotrophic Habitat Assessment) one weight test is done to between 700 and 1000 m at station 1 off Kahe Point (16 km offshore from the western tip of Oahu, 21 20.6' N, 158 16.4' W, 1500 m water depth). Following the successful winch test, a CTD/rosette cast to 1000 m is conducted. This cast serves as a "shakedown" for the remainder of the cruise, and the functioning of the components of the CTD/rosette system as well as coordination between winch, deck and console operators can be tested. The training of new personnel in activities such as taking meteorological observations, and sampling salinities is also done in this station. The data taken at Kahe Point (station 1) represent an additional time-series of water properties at a near-shore site.

Upon arrival at ALOHA (station 2), operations commence with a deep cast (maximum depth approximately 4750 m), 36-hour burst sampling3 of the upper 1000 m at the same location, plus CTD casts to support ancillary JGOFS work of about an extra 12 hours duration. Time permitting, the last CTD cast of the cruise will be a deep cast. On occasion, one cast will be done at station 3 (40 miles north of ALOHA at 23 25' N, 158 W).

The second and following casts at station ALOHA are sampled to at least 1000 m depth. Cast 2 is called a "density cast" because water samples are taken at a number of specified density values ranging from [sigma-theta]= 27.37 to the surface with the intent to resolve the profiles of salinity, dissolved oxygen, and nutrients in potential density coordinates Depths sampled during the following casts within the 36-hour burst sampling period are chosen both by the JGOFS group and the WOCE team, who have to ensure that at least one water sample each is taken within the mixed layer, the shallow salinity maximum, the intermediate salinity minimum and the deepest position of the rosette for calibration of the CTD conductivity sensor. If oxygen bottles will be taken from the cast, then the sampling should include at least the mixed layer, oxygen maximum, oxygen minimum and the deepest rosette position for calibration of the CTD oxygen sensor. The second deep cast of the cruise (if there is one) should include sampling of oxygen bottles in at least seven levels appropriate for calibration of the CTD oxygen sensor, i.e. in the oxycline and two more levels below the oxygen minimum, in addition to the four levels mentioned before.

The primary objective of the HOT program is to assess variability in the central Pacific Ocean on annual and interannual time scales. One of our most important concerns, therefore, is to ensure that the highest possible precision and accuracy is consistently maintained for all water column chemical measurements. In order to achieve the highest possible data quality, we have instituted a quality-assurance/quality-control program, and have attempted to collect all ancillary information necessary to ensure that our data are not biased by sampling artifacts.

Because sampling is over 36 hours, one can average out the effects short-term changes of the depth of density surfaces and the magnitude of hydrographic and nutrient variables (inertial, tidal, and shorter periods).

Thermosalinograph data are recorded every 10 seconds from water collected by a continuous seawater system aboard each vessel from a depth of about 3 meters. These data are processed and quality controlled. Details of the thermosalinograph processing are documented (Tupas et. al., 1996).

Navigation data are also included in the thermosalinograph data file. The navigation data are recorded every minute from the Global Positioning System (GPS) aboard R/V Moana Wave and linearly interpolated at the same times of the thermosalinograph record. These data include latitude and longitude.

Error flags were incorporated in the data.

Source_Used_Citation_Abbreviation:
1990 Chiswell, S., E. Firing, D. Karl, R. Lukas and C. Winn. Hawaii
Source_Used_Citation_Abbreviation:
Ocean Time-series Program Data Report 1, 1988-1989. SOEST Tech. Rept.
Source_Used_Citation_Abbreviation:
#1, School of Ocean and Earth Science and Technology, Univ. of Hawaii,
Source_Used_Citation_Abbreviation: Honolulu, HI, 269 pp.
Source_Used_Citation_Abbreviation:
1992 Winn, C., S. Chiswell, E. Firing, D. Karl and R. Lukas. Hawaii Ocean
Source_Used_Citation_Abbreviation:
Time-series Program Data Report 2, 1990. SOEST Tech. Rept. 92-1, School
Source_Used_Citation_Abbreviation:
of Ocean and Earth Science and Technology, Univ. of Hawaii, Honolulu,
Source_Used_Citation_Abbreviation: HI, 175 pp.
Source_Used_Citation_Abbreviation:
1993 Winn, C., R. Lukas, D. Karl and E. Firing. Hawaii Ocean Time- series
Source_Used_Citation_Abbreviation:
Program Data Report 3, 1991. SOEST Tech. Report 93-3, School of Ocean and
Source_Used_Citation_Abbreviation:
Earth Science and Technology, Univ. of Hawaii, Honolulu, HI, 228 pp.
Source_Used_Citation_Abbreviation:
1993 Tupas, L., F. Santiago-Mandujano, D. Hebel, R. Lukas, D. Karl and E.
Source_Used_Citation_Abbreviation:
Firing. Hawaii Ocean Time-series Program Data Report 4, 1992. SOEST Tech.
Source_Used_Citation_Abbreviation:
Report 93-14, School of Ocean and Earth Science and Technology, Univ. of
Source_Used_Citation_Abbreviation: Hawaii, Honolulu, HI, 248 pp.
Source_Used_Citation_Abbreviation:
1994 Tupas, L., F. Santiago-Mandujano, D. Hebel, E. Firing, F. Bingham, R.
Source_Used_Citation_Abbreviation:
Lukas, and D. Karl. Hawaii Ocean Time-series Program Data Report 5, 1993.
Source_Used_Citation_Abbreviation:
SOEST Tech. Report 94-5, School of Ocean and Earth Science and Technology,
Source_Used_Citation_Abbreviation: Univ. of Hawaii, Honolulu, HI, 156 pp.
Source_Used_Citation_Abbreviation:
1995 Tupas, L., F. Santiago-Mandujano, D. Hebel, E. Firing, R. Lukas, and
Source_Used_Citation_Abbreviation:
D. Karl. Hawaii Ocean Time-series Program Data Report 6, 1994. SOEST Tech.
Source_Used_Citation_Abbreviation:
Report 95-6, School of Ocean and Earth Science and Technology, Univ. of
Source_Used_Citation_Abbreviation: Hawaii, Honolulu, HI, 199 pp.
Source_Used_Citation_Abbreviation:
1996 Tupas, L., F. Santiago-Mandujano, C. Nosse, D. Hebel, E. Firing, R.
Source_Used_Citation_Abbreviation:
Lukas, and D. Karl. Hawaii Ocean Time-series Program Data Report 7, 1995.
Source_Used_Citation_Abbreviation:
SOEST Tech. Report 96-7, School of Ocean and Earth Science and Technology,
Source_Used_Citation_Abbreviation: Univ. of Hawaii, Honolulu, HI, 228 pp.
Source_Used_Citation_Abbreviation:
1997 Tupas, L., F. Santiago-Mandujano, D. Hebel, C. Nosse, L. Fujieki, E.
Source_Used_Citation_Abbreviation:
Firing, R. Lukas, and D. Karl. Hawaii Ocean Time-series Program Data
Source_Used_Citation_Abbreviation:
Report 8, 1996. SOEST Tech. Report 97-8, School of Ocean and Earth
Source_Used_Citation_Abbreviation: Science and Technology, Univ. of Hawaii, Honolulu, HI, 296 pp.
Source_Used_Citation_Abbreviation:
1998 Tupas, L., F. Santiago-Mandujano, D. Hebel, C. Nosse, L. Fujieki, E.
Source_Used_Citation_Abbreviation:
Firing, R. Lukas, and D. Karl. Hawaii Ocean Time-series Program Data
Source_Used_Citation_Abbreviation:
Report 9, 1997. SOEST Tech. Report 98-9, School of Ocean and Earth
Source_Used_Citation_Abbreviation: Science and Technology, Univ. of Hawaii, Honolulu, HI, 159 pp.
Process_Date: Unknown
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dr. Roger Lukas
Contact_Organization:
Department of Oceanography
School of Ocean and Earth Science and Technology
University of Hawaii
Contact_Position: Principal Investigator-- Physical data (non-ADCP)
Contact_Address:
Address_Type: Mailing and physical address
Address: 1000 Pope Rd
Address: Marine Science Bldg. Room 418
City: Honolulu
State_or_Province: HI
Postal_Code: 96822
Country: USA
Contact_Voice_Telephone: 808-956-7892
Contact_Electronic_Mail_Address: rlukas@soest.hawaii.edu

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Directories and files: /data root data directory

/woce_sum WOCE-type sum file which gives details on position and parameters taken of each cast and station of each cruise. Filenaming convention:

hotccc.sum where ccc is cruise number

/ths thermosalinograph data. Filenaming convention:

hotcccts.dat where ccc is cruise number ts is constant

Data File Format:

Thermosalinograph data are distributed in a format specified here.

The thermosalinograph data for each cruise are stored together with the navigation data in an ASCII file. The file names are determined by cruise name and number. For example, the thermosalinograph data for HOT-63 can be found in hot63ts.dat.

The thermosalinograph data files do not contain any header information. Only the data for each cruise are presented in the files. The order of variables in a thermosalinograph record are as follows: time (year, decimal year day), longitude, latitude, temperature, salinity and quality. Note, negative longitude corresponds to West longitude.

Data Record Format:

Column Variable ------- ------- 1 Year 2 Decimal Year Day (January 1 = Year Day 0) 3 Longitude (decimal degrees) 4 Latitude (decimal degrees) 5 Temperature (Degrees Celsius, International Temperature Scale of 1990) 6 Salinity (1978 International Practical Salinity Scale) 7 Quality (defined by investigator) **

FORTRAN FORMAT (i4, f10.5, f12.6, f11.6, f7.3, f7.3, i3)

** The quality word is the left-to-right concatenation of required quality bytes for temperature and salinity; the first byte represents temperature, the second represents salinity. Quality information is only available for cruises after HOT-71.

The byte values are defined as follows:

byte value Definition 2 Acceptable measurement. 3 Questionable measurement. 4 Bad measurement.

Sample File: (First few records)

1996 142.40750 -157.994382 22.749950 25.313 34.877 23 1996 142.40762 -157.994536 22.749976 25.310 34.873 23 1996 142.40773 -157.994677 22.750001 25.309 34.876 23 1996 142.40785 -157.994831 22.750029 25.308 34.882 23

Entity_and_Attribute_Detail_Citation: none

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
NOAA/NESDIS/NODC/NCDDC (National Coastal Data Development Center)
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Coastal Data Development Center, Building 1100
City: Stennis Space Center
State_or_Province: MS
Postal_Code: 39529
Contact_Voice_Telephone: 866-732-2382
Contact_Facsimile_Telephone: 228-688-2968
Contact_Electronic_Mail_Address: ncddcgetdata@noaa.gov
Hours_of_Service: 8am-5pm, Monday through Friday
Resource_Description: Downloadable Data
Distribution_Liability:
NOAA makes no warranty regarding these data,expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA, NESDIS, NODC and NCDDC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.

Metadata_Reference_Information:
Metadata_Date: 20210106
Metadata_Review_Date: 20090105
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mr. Patrick C. Caldwell
Contact_Organization: NOAA/NESDIS/NODC/NCDDC
Contact_Position: Hawaii/US Pacific Liaison
Contact_Address:
Address_Type: mailing
Address: 1000 Pope Road, MSB 316
Address: Dept. of Oceanography
Address: University of Hawaii at Manoa
City: Honolulu
State_or_Province: Hawaii
Postal_Code: 96822
Country: USA
Contact_Voice_Telephone: (808)-956-4105
Contact_Facsimile_Telephone: (808) 956-2352
Contact_Electronic_Mail_Address: caldwell@hawaii.edu
Hours_of_Service: 8 AM to 5 PM weekdays
Contact_Instructions: check services@nodc.noaa.gov if not available
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998

CoRIS:
CoRIS_ID: 20090105061521
CoRIS_Children: None
CoRIS_Beginning_Date: 20010115
CoRIS_Ending_Date: 20031222
CoRIS_Metadata_Link:
https://www.coris.noaa.gov/metadata/records/html/nodc_0001710_hot0103_ths_fgdc.html
CoRIS_Tracking_ID: 2547

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