Data Access Form

Dataset Title:	RV Sikuliaq : Gravimeter DGS AT1-M_33 : Gravity - Uncorrected : 1 minute binned
Institution:	UAF (Dataset ID: gravityuncorrected_mgal_gravim000033_060sbin)
Information:	Summary \| License \| Metadata \| Background \| Make a graph

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Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
time (UTC)
spot_time (UTC)
spot_value (mGal)
mean (mGal)
stddev (mGal)
minimum (mGal)
maximum (mGal)
median (mGal)
num_values (unitless)

Server-side Functions

distinct()

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File type: (more information)

(Documentation / Bypass this form )

(Please be patient. It may take a while to get the data.)

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    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";
  }
  spot_time {
    String ioos_category "Time";
    String long_name "Spot Time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  spot_value {
    String ioos_category "Statistics";
    String long_name "Gravity - Uncorrected Spot_Value";
    String short_name "gravity_uncorrected_spot_value";
    String special_notes "Binning type: linear";
    String standard_name "x_spot_value";
    String units "mGal";
  }
  mean {
    String ioos_category "Statistics";
    String long_name "Gravity - Uncorrected Mean";
    String short_name "gravity_uncorrected_mean";
    String special_notes "Binning type: linear";
    String standard_name "x_mean";
    String units "mGal";
  }
  stddev {
    String ioos_category "Statistics";
    String long_name "Gravity - Uncorrected Stddev";
    String short_name "gravity_uncorrected_stddev";
    String special_notes "Binning type: linear";
    String standard_name "x_stddev";
    String units "mGal";
  }
  minimum {
    String ioos_category "Statistics";
    String long_name "Gravity - Uncorrected Minimum";
    String short_name "gravity_uncorrected_minimum";
    String special_notes "Binning type: linear";
    String standard_name "x_minimum";
    String units "mGal";
  }
  maximum {
    String ioos_category "Statistics";
    String long_name "Gravity - Uncorrected Maximum";
    String short_name "gravity_uncorrected_maximum";
    String special_notes "Binning type: linear";
    String standard_name "x_maximum";
    String units "mGal";
  }
  median {
    String ioos_category "Statistics";
    String long_name "Gravity - Uncorrected Median";
    String short_name "gravity_uncorrected_median";
    String special_notes "Binning type: linear";
    String standard_name "x_median";
    String units "mGal";
  }
  num_values {
    String ioos_category "Statistics";
    String long_name "Gravity - Uncorrected Num_Values";
    String short_name "gravity_uncorrected_num_values";
    String special_notes "Binning type: linear";
    String standard_name "x_num_values";
    String units "unitless";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String contributor_name "RV Sikuliaq";
    String contributor_role "Data collector";
    String creator_name "CORIOLIX, RDESC, RCRV Project, Oregon State University";
    String creator_url "http://ceoas.oregonstate.edu";
    String history 
"2026-05-02T14:09:12Z (source database)
2026-05-02T14:09:12Z https://coriolix.sikuliaq.alaska.edu/erddap/tabledap/gravityuncorrected_mgal_gravim000033_060sbin.html";
    String infoUrl "https://www.uaf.edu/cfos/sikuliaq/";
    String institution "UAF";
    String keywords "atmosphere, data, observations, ocean";
    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 "(source database)";
    String standard_name_vocabulary "CF standard name";
    String summary 
"Gravity - Uncorrected 1-minute binned time series data.
Vessel: RV Sikuliaq. Sensor Model: unknown
Sensor S/N: AT1M-33
Sensor Location Onboard: Tech Shop
Sensor Description: Dynamic Gravity Systems AT1 Marine Gravimeter Serial Number: 33
Parameter Description: Uncorrected gravity.";
    String title "RV Sikuliaq : Gravimeter DGS AT1-M_33 : Gravity - Uncorrected : 1 minute binned";
  }
}

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.

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