{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:37:20.429012", "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": "2023-Dec-13_to_2023-Dec-16_244.5_58.0"}, "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": 2023120001354}, "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": "December 13 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 16 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 144470.46347915506}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": 58.0}, "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": 244.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "244.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 236.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 248.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.75, 58.5], [-123.53, 59.03], [-123.18, 59.18], [-123.03, 59.53], [-122.5, 59.75], [-122.25, 59.65], [-122.18, 59.68], [-122.03, 60.03], [-121.5, 60.25], [-121.25, 60.15], [-121.0, 60.25], [-120.75, 60.15], [-120.5, 60.25], [-120.25, 60.15], [-120.18, 60.18], [-120.03, 60.53], [-119.5, 60.75], [-119.25, 60.65], [-119.0, 60.75], [-118.75, 60.65], [-118.5, 60.75], [-118.25, 60.65], [-118.0, 60.75], [-117.75, 60.65], [-117.5, 60.75], [-117.25, 60.65], [-117.0, 60.75], [-116.75, 60.65], [-116.5, 60.75], [-116.25, 60.65], [-116.0, 60.75], [-115.47, 60.53], [-115.32, 60.18], [-115.25, 60.15], [-115.0, 60.25], [-114.75, 60.15], [-114.5, 60.25], [-114.25, 60.15], [-114.0, 60.25], [-113.47, 60.03], [-113.32, 59.68], [-113.25, 59.65], [-113.0, 59.75], [-112.75, 59.65], [-112.5, 59.75], [-111.97, 59.53], [-111.82, 59.18], [-111.47, 59.03], [-111.32, 58.68], [-110.97, 58.53], [-110.75, 58.0], [-110.85, 57.75], [-110.75, 57.5], [-110.85, 57.25], [-110.75, 57.0], [-110.97, 56.47], [-111.5, 56.25], [-112.03, 56.47], [-112.18, 56.82], [-112.25, 56.85], [-112.5, 56.75], [-112.75, 56.85], [-113.0, 56.75], [-113.25, 56.85], [-113.5, 56.75], [-113.75, 56.85], [-114.0, 56.75], [-114.25, 56.85], [-114.5, 56.75], [-115.0, 56.96], [-115.5, 56.75], [-116.03, 56.97], [-116.18, 57.32], [-116.25, 57.35], [-116.5, 57.25], [-116.75, 57.35], [-117.0, 57.25], [-117.25, 57.35], [-117.5, 57.25], [-117.75, 57.35], [-118.0, 57.25], [-118.25, 57.35], [-118.5, 57.25], [-119.03, 57.47], [-119.18, 57.82], [-119.25, 57.85], [-119.5, 57.75], [-119.75, 57.85], [-120.0, 57.75], [-120.25, 57.85], [-120.5, 57.75], [-120.75, 57.85], [-120.82, 57.82], [-120.97, 57.47], [-121.5, 57.25], [-121.75, 57.35], [-122.0, 57.25], [-122.25, 57.35], [-122.5, 57.25], [-123.03, 57.47], [-123.18, 57.82], [-123.53, 57.97], [-123.75, 58.5]], [[-115.65, 58.75], [-115.68, 58.82], [-115.75, 58.85], [-115.82, 58.82], [-115.87, 58.7], [-115.75, 58.65], [-115.68, 58.68], [-115.65, 58.75]]]]}, "2023-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.75, 58.5], [-123.53, 59.03], [-123.18, 59.18], [-123.03, 59.53], [-122.5, 59.75], [-122.25, 59.65], [-122.18, 59.68], [-122.03, 60.03], [-121.5, 60.25], [-121.25, 60.15], [-121.0, 60.25], [-120.75, 60.15], [-120.5, 60.25], [-120.25, 60.15], [-120.18, 60.18], [-120.03, 60.53], [-119.5, 60.75], [-119.25, 60.65], [-119.0, 60.75], [-118.75, 60.65], [-118.5, 60.75], [-118.25, 60.65], [-118.0, 60.75], [-117.75, 60.65], [-117.5, 60.75], [-117.25, 60.65], [-117.0, 60.75], [-116.75, 60.65], [-116.5, 60.75], [-116.25, 60.65], [-116.0, 60.75], [-115.47, 60.53], [-115.32, 60.18], [-115.25, 60.15], [-115.0, 60.25], [-114.75, 60.15], [-114.5, 60.25], [-114.25, 60.15], [-114.0, 60.25], [-113.47, 60.03], [-113.32, 59.68], [-113.25, 59.65], [-113.0, 59.75], [-112.75, 59.65], [-112.5, 59.75], [-111.97, 59.53], [-111.82, 59.18], [-111.47, 59.03], [-111.32, 58.68], [-110.97, 58.53], [-110.75, 58.0], [-110.85, 57.75], [-110.75, 57.5], [-110.85, 57.25], [-110.75, 57.0], [-110.97, 56.47], [-111.5, 56.25], [-112.03, 56.47], [-112.18, 56.82], [-112.25, 56.85], [-112.5, 56.75], [-112.75, 56.85], [-113.0, 56.75], [-113.25, 56.85], [-113.5, 56.75], [-113.75, 56.85], [-114.0, 56.75], [-114.25, 56.85], [-114.5, 56.75], [-115.0, 56.96], [-115.5, 56.75], [-116.03, 56.97], [-116.18, 57.32], [-116.25, 57.35], [-116.5, 57.25], [-116.75, 57.35], [-117.0, 57.25], [-117.25, 57.35], [-117.5, 57.25], [-117.75, 57.35], [-118.0, 57.25], [-118.25, 57.35], [-118.5, 57.25], [-119.03, 57.47], [-119.18, 57.82], [-119.25, 57.85], [-119.5, 57.75], [-119.75, 57.85], [-120.0, 57.75], [-120.25, 57.85], [-120.5, 57.75], [-120.75, 57.85], [-120.82, 57.82], [-120.97, 57.47], [-121.5, 57.25], [-121.75, 57.35], [-122.0, 57.25], [-122.25, 57.35], [-122.5, 57.25], [-123.03, 57.47], [-123.18, 57.82], [-123.53, 57.97], [-123.75, 58.5]], [[-115.65, 58.75], [-115.68, 58.82], [-115.75, 58.85], [-115.82, 58.82], [-115.87, 58.7], [-115.75, 58.65], [-115.68, 58.68], [-115.65, 58.75]]]]}, "2023-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.75, 58.5], [-123.53, 59.03], [-123.18, 59.18], [-123.03, 59.53], [-122.5, 59.75], [-122.25, 59.65], [-122.18, 59.68], [-122.03, 60.03], [-121.5, 60.25], [-121.25, 60.15], [-121.0, 60.25], [-120.75, 60.15], [-120.5, 60.25], [-120.25, 60.15], [-120.18, 60.18], [-120.03, 60.53], [-119.5, 60.75], [-119.25, 60.65], [-119.0, 60.75], [-118.75, 60.65], [-118.5, 60.75], [-118.25, 60.65], [-118.0, 60.75], [-117.75, 60.65], [-117.5, 60.75], [-117.25, 60.65], [-117.0, 60.75], [-116.75, 60.65], [-116.5, 60.75], [-116.25, 60.65], [-116.0, 60.75], [-115.47, 60.53], [-115.32, 60.18], [-115.25, 60.15], [-115.0, 60.25], [-114.75, 60.15], [-114.5, 60.25], [-114.25, 60.15], [-114.0, 60.25], [-113.47, 60.03], [-113.32, 59.68], [-113.25, 59.65], [-113.0, 59.75], [-112.75, 59.65], [-112.5, 59.75], [-111.97, 59.53], [-111.82, 59.18], [-111.47, 59.03], [-111.32, 58.68], [-110.97, 58.53], [-110.75, 58.0], [-110.85, 57.75], [-110.75, 57.5], [-110.85, 57.25], [-110.75, 57.0], [-110.97, 56.47], [-111.5, 56.25], [-112.03, 56.47], [-112.18, 56.82], [-112.25, 56.85], [-112.5, 56.75], [-112.75, 56.85], [-113.0, 56.75], [-113.25, 56.85], [-113.5, 56.75], [-113.75, 56.85], [-114.0, 56.75], [-114.25, 56.85], [-114.5, 56.75], [-115.0, 56.96], [-115.5, 56.75], [-116.03, 56.97], [-116.18, 57.32], [-116.25, 57.35], [-116.5, 57.25], [-116.75, 57.35], [-117.0, 57.25], [-117.25, 57.35], [-117.5, 57.25], [-117.75, 57.35], [-118.0, 57.25], [-118.25, 57.35], [-118.5, 57.25], [-119.03, 57.47], [-119.18, 57.82], [-119.25, 57.85], [-119.5, 57.75], [-119.75, 57.85], [-120.0, 57.75], [-120.25, 57.85], [-120.5, 57.75], [-120.75, 57.85], [-120.82, 57.82], [-120.97, 57.47], [-121.5, 57.25], [-121.75, 57.35], [-122.0, 57.25], [-122.25, 57.35], [-122.5, 57.25], [-123.03, 57.47], [-123.18, 57.82], [-123.53, 57.97], [-123.75, 58.5]], [[-115.65, 58.75], [-115.68, 58.82], [-115.75, 58.85], [-115.82, 58.82], [-115.87, 58.7], [-115.75, 58.65], [-115.68, 58.68], [-115.65, 58.75]]]]}, "2023-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.0, 59.25], [-121.75, 59.15], [-121.68, 59.18], [-121.53, 59.53], [-121.0, 59.75], [-120.75, 59.65], [-120.5, 59.75], [-120.25, 59.65], [-120.0, 59.75], [-119.75, 59.65], [-119.5, 59.75], [-119.25, 59.65], [-119.0, 59.75], [-118.75, 59.65], [-118.5, 59.75], [-118.25, 59.65], [-118.0, 59.75], [-117.75, 59.65], [-117.5, 59.75], [-116.97, 59.53], [-116.82, 59.18], [-116.47, 59.03], [-116.32, 58.68], [-116.25, 58.65], [-116.0, 58.75], [-115.75, 58.65], [-115.68, 58.68], [-115.53, 59.03], [-115.0, 59.25], [-114.75, 59.15], [-114.68, 59.18], [-114.53, 59.53], [-114.0, 59.75], [-113.75, 59.65], [-113.5, 59.75], [-113.25, 59.65], [-113.0, 59.75], [-112.75, 59.65], [-112.5, 59.75], [-111.97, 59.53], [-111.82, 59.18], [-111.47, 59.03], [-111.32, 58.68], [-110.97, 58.53], [-110.75, 58.0], [-110.85, 57.75], [-110.75, 57.5], [-110.85, 57.25], [-110.75, 57.0], [-110.97, 56.47], [-111.5, 56.25], [-112.03, 56.47], [-112.18, 56.82], [-112.25, 56.85], [-112.5, 56.75], [-112.75, 56.85], [-113.0, 56.75], [-113.25, 56.85], [-113.5, 56.75], [-113.75, 56.85], [-114.0, 56.75], [-114.25, 56.85], [-114.5, 56.75], [-115.0, 56.96], [-115.5, 56.75], [-116.03, 56.97], [-116.18, 57.32], [-116.25, 57.35], [-116.5, 57.25], [-116.75, 57.35], [-117.0, 57.25], [-117.25, 57.35], [-117.5, 57.25], [-117.75, 57.35], [-118.0, 57.25], [-118.25, 57.35], [-118.5, 57.25], [-119.03, 57.47], [-119.18, 57.82], [-119.25, 57.85], [-119.5, 57.75], [-119.75, 57.85], [-120.0, 57.75], [-120.25, 57.85], [-120.5, 57.75], [-120.75, 57.85], [-121.0, 57.75], [-121.25, 57.85], [-121.5, 57.75], [-121.75, 57.85], [-121.82, 57.82], [-121.97, 57.47], [-122.5, 57.25], [-123.03, 57.47], [-123.25, 58.0], [-123.03, 58.53], [-122.68, 58.68], [-122.53, 59.03], [-122.0, 59.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 20.22028500571841}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 15.211637463576466}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.190156797316547, 0.6301337047446509, -3.539821040596962, -2.7528308406911037]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.529304820624077, 4.1630474254826595, -0.6510416735529247, -0.34274544848909727]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [17.40238085179667, 16.886945389694304, 12.688152854492818, 13.014710127705582]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [20.22028500571841, 20.056290997967324, 14.353137196561647, 15.21707985498702]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.088454010899141, 2.017280518316789, 1.4989593683119766, 1.5036813514947367]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5672467452972088, 2.3804777971506246, 1.723238376108092, 1.7480294105706542]}}