{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:49.416571", "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-Apr-25_to_2022-Apr-27_247.0_70.0"}, "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": 2022040002498}, "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": "April 25 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 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": 64679.679321697055}, "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": 70.0}, "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": 247.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "247.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 241.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 250.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 69.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 71.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-119.03, 71.53], [-118.5, 71.75], [-118.0, 71.54], [-117.5, 71.75], [-117.25, 71.65], [-117.0, 71.75], [-116.75, 71.65], [-116.5, 71.75], [-116.25, 71.65], [-116.0, 71.75], [-115.75, 71.65], [-115.5, 71.75], [-115.25, 71.65], [-115.18, 71.68], [-115.03, 72.03], [-114.5, 72.25], [-114.25, 72.15], [-114.0, 72.25], [-113.75, 72.15], [-113.5, 72.25], [-113.25, 72.15], [-113.0, 72.25], [-112.75, 72.15], [-112.5, 72.25], [-111.97, 72.03], [-111.82, 71.68], [-111.47, 71.53], [-111.32, 71.18], [-110.97, 71.03], [-110.82, 70.68], [-110.75, 70.65], [-110.5, 70.75], [-109.97, 70.53], [-109.82, 70.18], [-109.47, 70.03], [-109.25, 69.5], [-109.47, 68.97], [-110.0, 68.75], [-110.25, 68.85], [-110.5, 68.75], [-110.75, 68.85], [-111.0, 68.75], [-111.25, 68.85], [-111.32, 68.82], [-111.47, 68.47], [-112.0, 68.25], [-112.25, 68.35], [-112.5, 68.25], [-112.75, 68.35], [-113.0, 68.25], [-113.25, 68.35], [-113.5, 68.25], [-114.03, 68.47], [-114.18, 68.82], [-114.25, 68.85], [-114.5, 68.75], [-114.75, 68.85], [-115.0, 68.75], [-115.25, 68.85], [-115.5, 68.75], [-115.75, 68.85], [-116.0, 68.75], [-116.53, 68.97], [-116.68, 69.32], [-117.03, 69.47], [-117.18, 69.82], [-117.25, 69.85], [-117.5, 69.75], [-117.75, 69.85], [-118.0, 69.75], [-118.53, 69.97], [-118.68, 70.32], [-119.03, 70.47], [-119.25, 71.0], [-119.03, 71.53]]]]}}, "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": {"2022-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.03, 70.47], [-119.25, 71.0], [-119.03, 71.53], [-118.5, 71.75], [-118.0, 71.54], [-117.5, 71.75], [-117.25, 71.65], [-117.0, 71.75], [-116.75, 71.65], [-116.5, 71.75], [-116.25, 71.65], [-116.0, 71.75], [-115.75, 71.65], [-115.5, 71.75], [-115.25, 71.65], [-115.18, 71.68], [-115.03, 72.03], [-114.5, 72.25], [-114.25, 72.15], [-114.0, 72.25], [-113.75, 72.15], [-113.5, 72.25], [-113.25, 72.15], [-113.0, 72.25], [-112.75, 72.15], [-112.5, 72.25], [-111.97, 72.03], [-111.82, 71.68], [-111.47, 71.53], [-111.32, 71.18], [-110.97, 71.03], [-110.82, 70.68], [-110.75, 70.65], [-110.5, 70.75], [-109.97, 70.53], [-109.82, 70.18], [-109.47, 70.03], [-109.25, 69.5], [-109.47, 68.97], [-110.0, 68.75], [-110.25, 68.85], [-110.5, 68.75], [-110.75, 68.85], [-111.0, 68.75], [-111.25, 68.85], [-111.32, 68.82], [-111.47, 68.47], [-112.0, 68.25], [-112.25, 68.35], [-112.5, 68.25], [-112.75, 68.35], [-113.0, 68.25], [-113.25, 68.35], [-113.5, 68.25], [-114.03, 68.47], [-114.18, 68.82], [-114.25, 68.85], [-114.5, 68.75], [-114.75, 68.85], [-115.0, 68.75], [-115.25, 68.85], [-115.5, 68.75], [-115.75, 68.85], [-116.0, 68.75], [-116.53, 68.97], [-116.68, 69.32], [-117.03, 69.47], [-117.18, 69.82], [-117.25, 69.85], [-117.5, 69.75], [-117.75, 69.85], [-118.0, 69.75], [-118.53, 69.97], [-118.68, 70.32], [-119.03, 70.47]]]]}, "2022-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.03, 70.47], [-119.25, 71.0], [-119.03, 71.53], [-118.5, 71.75], [-118.0, 71.54], [-117.5, 71.75], [-117.25, 71.65], [-117.0, 71.75], [-116.75, 71.65], [-116.5, 71.75], [-116.25, 71.65], [-116.0, 71.75], [-115.75, 71.65], [-115.5, 71.75], [-115.25, 71.65], [-115.18, 71.68], [-115.03, 72.03], [-114.5, 72.25], [-114.25, 72.15], [-114.0, 72.25], [-113.75, 72.15], [-113.5, 72.25], [-113.25, 72.15], [-113.0, 72.25], [-112.75, 72.15], [-112.5, 72.25], [-111.97, 72.03], [-111.82, 71.68], [-111.47, 71.53], [-111.32, 71.18], [-110.97, 71.03], [-110.82, 70.68], [-110.75, 70.65], [-110.5, 70.75], [-109.97, 70.53], [-109.82, 70.18], [-109.47, 70.03], [-109.25, 69.5], [-109.47, 68.97], [-110.0, 68.75], [-110.25, 68.85], [-110.5, 68.75], [-110.75, 68.85], [-111.0, 68.75], [-111.25, 68.85], [-111.32, 68.82], [-111.47, 68.47], [-112.0, 68.25], [-112.25, 68.35], [-112.5, 68.25], [-112.75, 68.35], [-113.0, 68.25], [-113.25, 68.35], [-113.5, 68.25], [-114.03, 68.47], [-114.18, 68.82], [-114.25, 68.85], [-114.5, 68.75], [-114.75, 68.85], [-115.0, 68.75], [-115.25, 68.85], [-115.5, 68.75], [-115.75, 68.85], [-116.0, 68.75], [-116.53, 68.97], [-116.68, 69.32], [-117.03, 69.47], [-117.18, 69.82], [-117.25, 69.85], [-117.5, 69.75], [-117.75, 69.85], [-118.0, 69.75], [-118.53, 69.97], [-118.68, 70.32], [-119.03, 70.47]]]]}, "2022-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.03, 70.47], [-119.25, 71.0], [-119.03, 71.53], [-118.5, 71.75], [-118.0, 71.54], [-117.5, 71.75], [-117.25, 71.65], [-117.0, 71.75], [-116.75, 71.65], [-116.5, 71.75], [-116.25, 71.65], [-116.0, 71.75], [-115.75, 71.65], [-115.5, 71.75], [-115.25, 71.65], [-115.18, 71.68], [-115.03, 72.03], [-114.5, 72.25], [-114.25, 72.15], [-114.0, 72.25], [-113.75, 72.15], [-113.5, 72.25], [-113.25, 72.15], [-113.0, 72.25], [-112.75, 72.15], [-112.5, 72.25], [-111.97, 72.03], [-111.82, 71.68], [-111.47, 71.53], [-111.32, 71.18], [-110.97, 71.03], [-110.82, 70.68], [-110.75, 70.65], [-110.5, 70.75], [-109.97, 70.53], [-109.82, 70.18], [-109.47, 70.03], [-109.25, 69.5], [-109.47, 68.97], [-110.0, 68.75], [-110.25, 68.85], [-110.5, 68.75], [-110.75, 68.85], [-111.0, 68.75], [-111.25, 68.85], [-111.32, 68.82], [-111.47, 68.47], [-112.0, 68.25], [-112.25, 68.35], [-112.5, 68.25], [-112.75, 68.35], [-113.0, 68.25], [-113.25, 68.35], [-113.5, 68.25], [-114.03, 68.47], [-114.18, 68.82], [-114.25, 68.85], [-114.5, 68.75], [-114.75, 68.85], [-115.0, 68.75], [-115.25, 68.85], [-115.5, 68.75], [-115.75, 68.85], [-116.0, 68.75], [-116.53, 68.97], [-116.68, 69.32], [-117.03, 69.47], [-117.18, 69.82], [-117.25, 69.85], [-117.5, 69.75], [-117.75, 69.85], [-118.0, 69.75], [-118.53, 69.97], [-118.68, 70.32], [-119.03, 70.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.913274238182225}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.984047803331321}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-6.044469941612306, -6.76678123254743, -6.347647920707004]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.05161408646012, -4.891940717014279, -4.220601581712742]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.562202538991201, 7.628344515513722, 7.761596355489027]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.913274238182225, 8.70941551764514, 9.2291002274103]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.831305111298511, 1.6531006600661524, 1.7225145684947407]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2253870525144115, 1.8743399206688154, 1.9974203572233726]}}