{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:40.273001", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2022-May-25_to_2022-May-27_241.5_68.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2022050002745}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "May 25 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 27 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 54168.9683818536}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Canada"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 68.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 241.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "241.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 238.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 244.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 67.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 69.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-121.04, 69.0], [-121.25, 69.5], [-121.03, 70.03], [-120.5, 70.25], [-120.25, 70.15], [-120.0, 70.25], [-119.75, 70.15], [-119.5, 70.25], [-119.25, 70.15], [-119.0, 70.25], [-118.47, 70.03], [-118.32, 69.68], [-118.25, 69.65], [-118.0, 69.75], [-117.75, 69.65], [-117.5, 69.75], [-116.97, 69.53], [-116.82, 69.18], [-116.75, 69.15], [-116.5, 69.25], [-116.25, 69.15], [-116.0, 69.25], [-115.75, 69.15], [-115.5, 69.25], [-114.97, 69.03], [-114.75, 68.5], [-114.96, 68.0], [-114.75, 67.5], [-114.85, 67.25], [-114.75, 67.0], [-114.97, 66.47], [-115.5, 66.25], [-115.75, 66.35], [-116.0, 66.25], [-116.25, 66.35], [-116.5, 66.25], [-116.75, 66.35], [-117.0, 66.25], [-117.53, 66.47], [-117.68, 66.82], [-117.75, 66.85], [-118.0, 66.75], [-118.25, 66.85], [-118.5, 66.75], [-118.75, 66.85], [-119.0, 66.75], [-119.25, 66.85], [-119.5, 66.75], [-119.75, 66.85], [-120.0, 66.75], [-120.25, 66.85], [-120.5, 66.75], [-120.75, 66.85], [-121.0, 66.75], [-121.25, 66.85], [-121.5, 66.75], [-122.03, 66.97], [-122.25, 67.5], [-122.03, 68.03], [-121.68, 68.18], [-121.53, 68.53], [-121.18, 68.68], [-121.04, 69.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.53, 68.53], [-121.18, 68.68], [-121.03999999999999, 69.0], [-121.25, 69.5], [-121.03, 70.03], [-120.5, 70.25], [-120.25, 70.15], [-120.0, 70.25], [-119.75, 70.15], [-119.5, 70.25], [-119.25, 70.15], [-119.0, 70.25], [-118.47, 70.03], [-118.32, 69.68], [-118.25, 69.65], [-118.0, 69.75], [-117.75, 69.65], [-117.5, 69.75], [-116.97, 69.53], [-116.82, 69.18], [-116.75, 69.15], [-116.5, 69.25], [-116.25, 69.15], [-116.0, 69.25], [-115.75, 69.15], [-115.5, 69.25], [-114.97, 69.03], [-114.75, 68.5], [-114.96000000000001, 68.0], [-114.75, 67.5], [-114.85, 67.25], [-114.75, 67.0], [-114.97, 66.47], [-115.5, 66.25], [-115.75, 66.35], [-116.0, 66.25], [-116.25, 66.35], [-116.5, 66.25], [-116.75, 66.35], [-117.0, 66.25], [-117.53, 66.47], [-117.68, 66.82], [-117.75, 66.85], [-118.0, 66.75], [-118.25, 66.85], [-118.5, 66.75], [-118.75, 66.85], [-119.0, 66.75], [-119.25, 66.85], [-119.5, 66.75], [-119.75, 66.85], [-120.0, 66.75], [-120.25, 66.85], [-120.5, 66.75], [-120.75, 66.85], [-121.0, 66.75], [-121.25, 66.85], [-121.5, 66.75], [-122.03, 66.97], [-122.25, 67.5], [-122.03, 68.03], [-121.68, 68.18], [-121.53, 68.53]]]]}, "2022-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.53, 68.53], [-121.18, 68.68], [-121.03999999999999, 69.0], [-121.25, 69.5], [-121.03, 70.03], [-120.5, 70.25], [-120.25, 70.15], [-120.0, 70.25], [-119.75, 70.15], [-119.5, 70.25], [-119.25, 70.15], [-119.0, 70.25], [-118.47, 70.03], [-118.32, 69.68], [-118.25, 69.65], [-118.0, 69.75], [-117.75, 69.65], [-117.5, 69.75], [-116.97, 69.53], [-116.82, 69.18], [-116.75, 69.15], [-116.5, 69.25], [-116.25, 69.15], [-116.0, 69.25], [-115.75, 69.15], [-115.5, 69.25], [-114.97, 69.03], [-114.75, 68.5], [-114.96000000000001, 68.0], [-114.75, 67.5], [-114.85, 67.25], [-114.75, 67.0], [-114.97, 66.47], [-115.5, 66.25], [-115.75, 66.35], [-116.0, 66.25], [-116.25, 66.35], [-116.5, 66.25], [-116.75, 66.35], [-117.0, 66.25], [-117.53, 66.47], [-117.68, 66.82], [-117.75, 66.85], [-118.0, 66.75], [-118.25, 66.85], [-118.5, 66.75], [-118.75, 66.85], [-119.0, 66.75], [-119.25, 66.85], [-119.5, 66.75], [-119.75, 66.85], [-120.0, 66.75], [-120.25, 66.85], [-120.5, 66.75], [-120.75, 66.85], [-121.0, 66.75], [-121.25, 66.85], [-121.5, 66.75], [-122.03, 66.97], [-122.25, 67.5], [-122.03, 68.03], [-121.68, 68.18], [-121.53, 68.53]]]]}, "2022-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.53, 68.53], [-121.18, 68.68], [-121.03999999999999, 69.0], [-121.25, 69.5], [-121.03, 70.03], [-120.5, 70.25], [-120.25, 70.15], [-120.0, 70.25], [-119.75, 70.15], [-119.5, 70.25], [-119.25, 70.15], [-119.0, 70.25], [-118.47, 70.03], [-118.32, 69.68], [-118.25, 69.65], [-118.0, 69.75], [-117.75, 69.65], [-117.5, 69.75], [-116.97, 69.53], [-116.82, 69.18], [-116.75, 69.15], [-116.5, 69.25], [-116.25, 69.15], [-116.0, 69.25], [-115.75, 69.15], [-115.5, 69.25], [-114.97, 69.03], [-114.75, 68.5], [-114.96000000000001, 68.0], [-114.75, 67.5], [-114.85, 67.25], [-114.75, 67.0], [-114.97, 66.47], [-115.5, 66.25], [-115.75, 66.35], [-116.0, 66.25], [-116.25, 66.35], [-116.5, 66.25], [-116.75, 66.35], [-117.0, 66.25], [-117.53, 66.47], [-117.68, 66.82], [-117.75, 66.85], [-118.0, 66.75], [-118.25, 66.85], [-118.5, 66.75], [-118.75, 66.85], [-119.0, 66.75], [-119.25, 66.85], [-119.5, 66.75], [-119.75, 66.85], [-120.0, 66.75], [-120.25, 66.85], [-120.5, 66.75], [-120.75, 66.85], [-121.0, 66.75], [-121.25, 66.85], [-121.5, 66.75], [-122.03, 66.97], [-122.25, 67.5], [-122.03, 68.03], [-121.68, 68.18], [-121.53, 68.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.923982863839854}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.321677546892864}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.338648989262595, 7.370818243857059, 6.513950753608242]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.884105750413141, 9.279875394509816, 8.797813510315166]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.63909924437879, 8.258042820043968, 7.06789057625583]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.80083869113389, 9.923982863839854, 9.597907538625236]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7317409997792994, 2.120669648026745, 1.7696324826523733]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.1123693953319114, 2.6209301724114447, 2.541170376174829]}}