{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-08-31 16:20:39.760804", "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": "2026-Aug-18_to_2026-Aug-22_240.5_50.0"}, "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": 2026080001668}, "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": "August 18 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 22 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 74333.29120367349}, "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", "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": 50.0}, "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": 240.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "240.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 237.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 243.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 49.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.03, 49.47], [-120.25, 50.0], [-120.03, 50.53], [-119.5, 50.75], [-118.97, 50.53], [-118.75, 50.0], [-118.97, 49.47], [-119.5, 49.25], [-120.03, 49.47]]], [[[-123.03, 50.47], [-123.25, 51.0], [-123.03, 51.53], [-122.5, 51.75], [-121.97, 51.53], [-121.75, 51.0], [-121.97, 50.47], [-122.5, 50.25], [-123.03, 50.47]]]]}, "2026-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.75, 51.65], [-120.5, 51.75], [-120.25, 51.65], [-120.0, 51.75], [-119.75, 51.65], [-119.5, 51.75], [-119.25, 51.65], [-119.0, 51.75], [-118.47, 51.53], [-118.32, 51.18], [-118.0, 51.04], [-117.5, 51.25], [-116.97, 51.03], [-116.75, 50.5], [-116.97, 49.97], [-117.5, 49.75], [-118.0, 49.96], [-118.32, 49.82], [-118.35, 49.75], [-118.25, 49.5], [-118.47, 48.97], [-119.0, 48.75], [-119.53, 48.97], [-119.68, 49.32], [-120.03, 49.47], [-120.25, 50.0], [-120.15, 50.25], [-120.18, 50.32], [-120.25, 50.35], [-120.32, 50.32], [-120.47, 49.97], [-121.0, 49.75], [-121.53, 49.97], [-121.75, 50.5], [-121.65, 50.75], [-121.75, 51.0], [-121.53, 51.53], [-121.0, 51.75], [-120.75, 51.65]]], [[[-123.03, 50.47], [-123.25, 51.0], [-123.03, 51.53], [-122.5, 51.75], [-121.97, 51.53], [-121.75, 51.0], [-121.97, 50.47], [-122.5, 50.25], [-123.03, 50.47]]]]}, "2026-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.25, 51.0], [-123.03, 51.53], [-122.5, 51.75], [-121.97, 51.53], [-121.82, 51.18], [-121.75, 51.15], [-121.68, 51.18], [-121.53, 51.53], [-121.0, 51.75], [-120.75, 51.65], [-120.5, 51.75], [-120.25, 51.65], [-120.18, 51.68], [-120.03, 52.03], [-119.5, 52.25], [-119.25, 52.15], [-119.18, 52.18], [-119.03, 52.53], [-118.5, 52.75], [-118.25, 52.65], [-118.0, 52.75], [-117.75, 52.65], [-117.5, 52.75], [-117.25, 52.65], [-117.0, 52.75], [-116.47, 52.53], [-116.25, 52.0], [-116.47, 51.47], [-116.82, 51.32], [-116.85, 51.25], [-116.82, 51.18], [-116.75, 51.15], [-116.5, 51.25], [-115.97, 51.03], [-115.75, 50.5], [-115.97, 49.97], [-116.5, 49.75], [-116.75, 49.85], [-117.0, 49.75], [-117.25, 49.85], [-117.37, 49.8], [-117.25, 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"value": 9.044334870839293}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.7219657633032375}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.25899531046548, 20.359260450090687, 19.00455941986621, 19.891697318093804, 20.988329957660937]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.59696731567385, 22.376983896891318, 22.76186650594076, 24.24902496337893, 25.349441782633505]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.334403177749209, 4.294511649358741, 4.597267423611606, 5.843749014611478, 7.323814608695334]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.349174487350467, 4.603081568002153, 5.35438816079062, 6.897593431524911, 9.044334870839293]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4839486706874858, 1.373167809380167, 1.4640187203085302, 1.9181373056955282, 2.4628356435666094]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.552057506776174, 1.559191443998685, 1.8340963160527872, 2.4070239766191, 3.0893530497886608]}}