Data Access Form

Dataset Title:	Arctic Sea Ice Phenology in CMIP6
Institution:	Centre for Earth Observation Science - University of Manitoba (Dataset ID: Alex_Crawford_sea_ice_model_a97c_4efd_e7b6)
Information:	Summary \| License \| Metadata \| Background \| Subset \| Files \| Make a graph

To work correctly, this web page requires that JavaScript be enabled in your browser. Please:
1) Enable JavaScript in your browser:
      • Chrome: "Settings : Show advanced settings : Privacy / Content settings : JavaScript"
      • Firefox: (it should be always on!)"
      • Internet Explorer: "Tools : Internet Options : Security : Internet : Custom level :
          Sripting/ Active Scripting : Enable : OK : OK"
      • Opera: "Settings : Websites : JavaScript"
      • Safari: "Safari : Preferences : Security : Enable JavaScript"
2) Reload this web page.

Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

url

name (File Name)

lastModified (UTC)

2023-01-26T16:46:00Z

2023-01-26T16:48:07Z

size (bytes)

1.65060153E8

6.63535197E8

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 cdm_data_type "Other";
    String creator_email "alex.crawford@umanitoba.ca";
    String creator_name "Alex Crawford";
    String history 
"2025-10-28T00:01:33Z (local files)
2025-10-28T00:01:33Z http://CanWINerddap.ad.umanitoba.ca/erddap/tabledap/Alex_Crawford_sea_ice_model_a97c_4efd_e7b6.html";
    String infoUrl "https://canwin-datahub.ad.umanitoba.ca/data/dataset/nsidc-extratropical-cyclone-tracking-cnect";
    String institution "Centre for Earth Observation Science - University of Manitoba";
    String keywords "Arctic, climate change, climate model, cmip6, Sea ice";
    String license "Creative Commons Attribution 4.0 International";
    String sourceUrl "(local files)";
    String subsetVariables "fileType";
    String summary "The seasonal timing of summer sea ice retreat (sea ice concentration falls below 15%) and fall sea ice advance (sea ice concentration rises above 15%) is recorded annually, as are the annual sea ice minimum, day of minimum, and the length of the open-water (i.e., ice-free) period. Data input is daily sea ice concentration from CMIP6 models that were run under four experiments: historical, ssp126, ssp245, and ssp585. The first ensemble member for each model and experiment is included. A single-model ensemble (MPI-ESM1-2-LR) with 10 members is also included for each experiment. All data are stored in NetCDF4 files on the same grids as the original model output.";
    String title "Arctic Sea Ice Phenology in CMIP6";
  }
}

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.