IGOSS Sea Level Program in the Pacific

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: IGOSS Sea Level Program in the Pacific
Description:
Abstract:
Integrated Global Ocean Services System (IGOSS) IGOSS Sea Level Program in the Pacific (ISLP-Pac) The IGOSS Sea Level Program in the Pacific was established for the purpose of making monthly mean sea level data available to a wide circle of users in a timely fashion, and to generate products that would be valuable for scientific analysis of climate-related processes. A pilot project started in June, 1984 and a permanent program was established in 1988. During the pilot project and in the first year of the permanent program, maps of the sea level deviations from the mean sea level were produced without fail beginning in June 1984 (ISLPP.DEVIATIONS, see below). In January 1988, maps were produced of the anomaly of sea level from the 1975 to 1986 mean annual cycle of sea level (ISLPP.ANOMALIES). This anomaly is also corrected for the inverted barometer effect using the atmospheric pressure fields computed at the National Meteorological Center. Beginning in 1997, the mean sea level and annual cycle are referenced to the period 1975 - 1995. Data from previous years have been updated using the new reference means. In addition to these basic products, additional products were developed during the pilot project. These products include time series of the volume of the tropical Pacific Ocean (ISLPP.VOLUME, published quarterly) and indices of the equatorial current system (ISLPP.CURRENTS and ISLPP.TOPOGRAPHY, published annually). The volume time series has received much attention because of its importance for El Nino prediction and analysis. The time series at each station is preceded by one header record, which includes the station name and location, followed by a series of data records, each containing data for one year. These data records contain the station name, the year and the 12 monthly values of the appropriate quantity. ISLPP.DEVIATIONS This file contains the time series of the deviations of sea level from the 1975 to 1995 mean sea level value computed at each station. The time series cover the period 1975 to 1997. Large linear trends were found at five stations and are corrected for in this dataset. The five stations affected are Kushimoto, Aburatsu, and Naha in Japan, Davao in the Philippines, and Seldovia in Alaska. ISLPP.PC_DEVIATIONS This file contains the time series of the pressure-corrected deviations of sea level from the 1975 through 1995 mean sea level value computed at each station. The time series cover the period 1975 through 1997. Large linear trends were found at five stations and are corrected for in this data set. The five stations affected are Davao in the Philippines, Kushiro in Japan Suva in Fiji and Seldovia, Yakutat in Alaska. Units for the pressure-corrected sea level deviations are millimeters, and missing data points are set to a value of 9999. ISLPP.ANOMALIES This file contains the anomalies of sea level corrected for the atmospheric pressure. Anomalies of sea level are computed by subtracting the mean annual cycle of the sea level variation that is estimated using data from 1975 to 1995. Atmospheric pressure corrections are derived from the fields computed at the National Meteorological Center. The time series of the pressure-corrected sea level anomaly cover the period 1975 to 1997. Large linear trends were found at five stations and are corrected for in this dataset. The five stations affected are Kushimoto, Aburatsu, and Naha in Japan, Davao in the Philippines, and Seldovia in Alaska. ISLPP.CURRENTS and ISLPP.TOPOGRAPHY These files contain indices of the equatorial Pacific currents and estimates of the equatorial ridge and trough topography that are used to derive the current indices. Current indices are provided for the North Equatorial Countercurrent, the North Equatorial Current, and for the portions of the South Equatorial Current lying north and south of the equator. The current indices are computed by perturbing the meridional profile of mean surface dynamic height with the monthly mean time series of the sea level variations and calculating the appropriate ridge to trough difference for each current for each month. The mean values of the indices have not been removed from the time series. The calculation of these indices is discussed in greater detail in Wyrtki (74); see reference section. ISLPP.VOLUME This file contains the monthly time series of the variations in the upper layer volume of the tropical Pacific between 15N and 15S. The volume is computed from a gridded field of the sea level deviations via a one and a half layer approximation for the vertical structure of the tropical Pacific. Further details of the calculation are given by Wyrtki (87); see reference section. The units for the volume changes are 10 to the 12th cubic meters, and the variations are relative to a mean value of about 7000 of these units. The annual cycle has not been removed from the volume deviation time series. ------------------------------------------------------------------------------- Data is distributed by anonymous ftp: "ftp://ilikai.soest.hawaii.edu" and cd to the islp directory. Alternate ftp (users have had some difficulty with alphanumeric version): "ftp://128.171.153.56" There are seven files available: README, ISLPP.DEVIATIONS, ISLPP.PC_DEVIATIONS, ISLPP.ANOMALIES, ISLPP.CURRENTS, ISLPP.TOPOGRAPHY, and ISLPP.VOLUME. The README file contains a somewhat more detailed version of the information given in this summary. We ask that you help the University of Hawaii monitor the success of their effort to enhance the access to IGOSS products. To do this, please let them know what data you have copied, and make comments or suggestions for improvement. You can send mail messages to Mark Merrifield (markm@soest.hawaii.edu), or to Shikiko Nakahara (nakahara@kia.soest.hawaii.edu). If you cannot use the anonymous ftp, contact the University of Hawaii using the information given below in the personnel section.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Wyrtki,Klaus, 'Water displacements in the Pacific and the genesis of El Nino', JOURNAL OF GEOPHYSICAL RESEARCH, vol.90, no.c4, pp. 7129-7132, 1985. Wyrtki,Klaus, 'Equatorial Currents in the Pacific 1950 to 1970 and their relation to the trade winds', JOURNAL OF PHYSICAL OCEANOGRAPHY, Vol.4, pp.372-380, July 1974.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19750101
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 120.0
East_Bounding_Coordinate: -80.0
North_Bounding_Coordinate: 50.0
South_Bounding_Coordinate: -15.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > OCEANS > COASTAL PROCESSES > SEA SURFACE HEIGHT > SEA LEVEL
Theme_Keyword: EARTH SCIENCE > OCEANS > COASTAL PROCESSES > TIDAL HEIGHT
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS > CURRENT INDEX
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS > CURRENT INDICES
Theme_Keyword: EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT > SEA LEVEL
Theme_Keyword: EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT > SEA LEVEL ANOMALIES
Theme_Keyword: EARTH SCIENCE > OCEANS > TIDES > TIDAL HEIGHT
Theme_Keyword: EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > EL NINO SOUTHERN OSCILLATION (ENSO) > ENSO
Theme_Keyword: TIDE GAUGES
Theme_Keyword: IGOSS > INTEGRATED GLOBAL OCEAN SERVICES SYSTEM
Theme_Keyword: Sea Level Anomalies
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ELEVATION
Theme_Keyword: OCEANS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > PACIFIC OCEAN
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: MARK MERRIFIELD
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: UH Sea Level Center
Address: University of Hawaii
Address: 1000 Pope Road, MSB 317
City: Honolulu
State_or_Province: Hawaii
Postal_Code: 96822-2336
Country: USA
Contact_Voice_Telephone: 808-956-6161
Contact_Facsimile_Telephone: 808-956-2352
Contact_Electronic_Mail_Address: markm@soest.hawaii.edu
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: UHI/SOEST/JIMAR > Joint Institute for Marine and Atmospheric Research, School of Ocean and Earth Science and Technology, University of Hawaii
Contact_Person: SHIKIKO NAKAHARA
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: University of Hawaii
Address: Joint Institute for Marine and Atmospheric Research
Address: 1000 Pope Road
Address: Marine Sciences Building, Room 312
City: Honolulu
State_or_Province: Hawaii
Postal_Code: 96822
Country: USA
Contact_Voice_Telephone: 808-956-8728
Contact_Facsimile_Telephone: 808-956-2352
Contact_Electronic_Mail_Address: nakahara@kia.soest.hawaii.edu
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: UHI/SOEST/OCEAN/SLC > Sea Level Center, Oceanography Department, School of Ocean and Earth Science and Technology, University of Hawaii
Contact_Person: UNIVERSITY OF HAWAII SEA LEVEL CENTER
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: UH Sea Level Center
Address: University of Hawaii
Address: 1000 Pope Road, MSB 317
City: Honolulu
State_or_Province: Hawaii
Postal_Code: 96822-2336
Country: USA
Contact_Voice_Telephone: (808) 956-8083
Contact_Facsimile_Telephone: (808) 956-2352
Resource_Description: ISLP-PAC > ISLPP.DEVIATIONS
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://ilikai.soest.hawaii.edu/JIMAR/
Access_Instructions:
DATA CENTER URL
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://uhslc.soest.hawaii.edu/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://uhslc.soest.hawaii.edu/uhslc/rsld/index.htm...
Access_Instructions:
Real Time Sea Level Data from the University of Hawaii Sea Level Center
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://ilikai.soest.hawaii.edu/rqds
Access_Instructions:
Research quality sea level data from University of Hawaii Sea Level Center
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://ilikai.soest.hawaii.edu/woce/
Access_Instructions:
Fast-delivery Sea Level Data from the University of Hawaii Sea Level Center
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://ilikai.soest.hawaii.edu/islp/
Access_Instructions:
IGOSS Sea Level Data from the University of Hawaii Sea Level Center
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date:
Metadata_Review_Date: 20090420
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: CHRISTINA J. LIEF
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Program Manager
Address: Global Observing Systems Information Center (GOSIC)
Address: NOAA/NESDIS/NCDC - Room 459
City: Asheville, NC
State_or_Province: NC
Postal_Code: 28801
Country: USA
Contact_Voice_Telephone: +1 (828) 271-4101
Contact_Electronic_Mail_Address: christina.lief@noaa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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