Data Access Form

Dataset Title:	Churchill KuKa Data 2021
Institution:	Centre for Earth Observation Science - University of Manitoba (Dataset ID: um_kuka_radar_b685_cf5d_ae69)
Information:	Summary \| License \| Metadata \| Background \| Subset \| Files \| Make a graph

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

url

name (File Name)

lastModified (UTC)

2024-10-21T18:03:30Z

2024-10-22T16:39:35Z

size (bytes)

1690957.0

1.51959381E8

fileType

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

File type: (more info)

(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 {
  url {
    String ioos_category "Identifier";
    String long_name "URL";
  }
  name {
    String ioos_category "Identifier";
    String long_name "File Name";
  }
  lastModified {
    String ioos_category "Time";
    String long_name "Last Modified";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  size {
    String ioos_category "Other";
    String long_name "Size";
    String units "bytes";
  }
  fileType {
    String ioos_category "Identifier";
    String long_name "File Type";
  }
 }
  NC_GLOBAL {
    String Activity_Collection_Type "Field Measurement";
    String cdm_data_type "Other";
    String Data_collection_end_date "2021-12-13";
    String Data_collection_start_date "2021-12-02";
    String Dataset_Author "Stroeve, Julienne";
    String Dataset_Author_Affiliation "Centre for Earth Observation Science - University of Manitoba";
    String Dataset_Author_Email "julienne.stroeve@umanitoba.ca";
    String Dataset_Contributor_1 "Saha, Monojit";
    String Dataset_Contributor_2 "Nandan, Vishnu";
    String Dataset_Contributor_3 "Willatt, Rosemary";
    String Dataset_Contributor_4 "Mallett, Robbie";
    String Dataset_Contributor_5 "Newman, Thomas";
    String Dataset_Contributor_6 "Jensen, David";
    String Dataset_Contributor_7 "Yackel, John";
    String Dataset_Contributor_Afiliation_1 "Centre for Earth Observation Science - University of Manitoba";
    String Dataset_Contributor_Afiliation_2 "Centre for Earth Observation Science - University of Manitoba";
    String Dataset_Contributor_Afiliation_6 "Centre for Earth Observation Science - University of Manitoba";
    String Dataset_Contributor_Afiliation_7 "University of Calgary";
    String Dataset_Contributor_Role_1 "DataCollector";
    String Dataset_Contributor_Role_2 "DataCollector";
    String Dataset_Contributor_Role_3 "DataCollector";
    String Dataset_Contributor_Role_4 "DataCollector";
    String Dataset_Contributor_Role_5 "DataCollector";
    String Dataset_Contributor_Role_6 "DataCollector";
    String Dataset_Contributor_Role_7 "DataCollector";
    String Dataset_Maintenance_&_Update_Frequency "Not planned";
    String Dataset_Status "Complete";
    String Dataset_Version "None";
    String history 
"2025-10-30T21:53:52Z (local files)
2025-10-30T21:53:52Z http://CanWINerddap.ad.umanitoba.ca/erddap/tabledap/um_kuka_radar_b685_cf5d_ae69.html";
    String infoUrl "https://canwin-datahub.ad.umanitoba.ca/data/dataset/churchill-kuka-data-2021";
    String institution "Centre for Earth Observation Science - University of Manitoba";
    String Keywords_1 "Freeze-up";
    String Keywords_2 "Kuka";
    String Keywords_3 "Lake ice";
    String Keywords_4 "Radar";
    String Keywords_5 "sea ice";
    String keywords_vocabulary "Polar Data Catalogue";
    String license "Creative Commons Attribution 4.0 International";
    String Research_Area "churchill";
    String Sample_Collection_Instruemnt "KuKa Radar by ProSensing Inc.";
    String Sample_Collection_Method "Ku and Ka band microwave measurements";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String subsetVariables "fileType";
    String summary "The dataset contains the **Ku** and **Ka** band radar waveform data collected on sea and lake ice during the Churchill Freeze-Up Campaign, December 2021.\\r\\n\\r\\n**The associated snow depth data can be found [here](https://canwin-datahub.ad.umanitoba.ca/data/dataset/churchill-snow-depth-2021).**\\r\\n\\r\\n**The associated snow geophysical data can be found [here](https://canwin-datahub.ad.umanitoba.ca/data/dataset/churchill-snow-geophysical-data-2021).**\\r\\n\\r\\n\\r\\n**Photo Credit:** Thomas Newman";
    String title "Churchill KuKa Data 2021";
    String Type "dataset";
  }
}

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.