Data Access Form

Dataset Title:	Sea level observations at Trieste, Molo Sartorio, Italy
Institution:	CNR-ISMAR (Dataset ID: TS_SEA_LEVEL_39_18)
Information:	Summary \| License \| Metadata \| Background \| Files

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Variable	Minimum	Maximum
time (UTC)	1938-12-31T23:00:00Z	2018-12-31T22:00:00Z

SEA_LEVEL_HEIGHT (Sea Level, centimeters)	"100"	"99"

Server-side Functions

distinct()

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File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range -9.783108e+8, 1.5462936e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  SEA_LEVEL_HEIGHT {
    String ioos_category "surface_elevation";
    String long_name "Sea Level";
    String standard_name "water_surface_height_above_reference_datum";
    String units "centimeters";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "CNR-ISMAR";
    String creator_type "institution";
    String history 
"2024-11-10T01:56:02Z (local files)
2024-11-10T01:56:02Z http://erddap.ve.ismar.cnr.it/erddap/tabledap/TS_SEA_LEVEL_39_18.html";
    String infoUrl "https://www.seanoe.org/data/00516/62758/";
    String institution "CNR-ISMAR";
    String keywords "sea level";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "The data set includes instantaneous hourly sea level heights measured at the tide gauge on Molo (Pier) Sartorio in the harbour of Trieste, Italy. The station is no. 340 in the GLOSS Core Network. The time series starts on 1 January 1939, 00 (UTC+1), and ends on 31 December 2018, 23 (UTC+1). Heights are expressed in centimetres, relative to the tide gauge zero, which is situated 3.993 m below the internal tide gauge benchmark named 'Piastrina mareografica' (PM). The most recent quotation of PM dates back to autumn 2002 with 2.3310 m above the IGM (Istituto Geografico Militare) national Italian altimetric datum. The data were digitized from charts until 11 January 2001, and recorded on datalogger afterwards.";
    String time_coverage_end "2018-12-31T22:00:00Z";
    String time_coverage_start "1938-12-31T23:00:00Z";
    String title "Sea level observations at Trieste, Molo Sartorio, Italy";
  }
}

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its selection constraints (external link)

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.