{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:28.347993", "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-Aug-05_to_2022-Aug-08_273.5_41.5"}, "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": 2022080001762}, "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 05 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 08 2022"}, "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": 94363.74197123364}, "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", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 41.5}, "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": 273.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "273.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 270.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 280.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-86.18, 42.18], [-86.03, 42.53], [-85.5, 42.75], [-85.25, 42.65], [-85.0, 42.75], [-84.75, 42.65], [-84.68, 42.68], [-84.53, 43.03], [-84.0, 43.25], [-83.75, 43.15], [-83.5, 43.25], [-83.25, 43.15], [-83.18, 43.18], [-83.03, 43.53], [-82.5, 43.75], [-82.0, 43.54], [-81.68, 43.68], [-81.53, 44.03], [-81.18, 44.18], [-81.03, 44.53], [-80.5, 44.75], [-80.25, 44.65], [-80.18, 44.68], [-80.03, 45.03], [-79.5, 45.25], [-78.97, 45.03], [-78.75, 44.5], [-78.85, 44.25], [-78.75, 44.0], [-78.97, 43.47], [-79.5, 43.25], [-79.75, 43.35], [-79.82, 43.32], [-79.97, 42.97], [-80.5, 42.75], [-80.75, 42.85], [-80.82, 42.82], [-80.97, 42.47], [-81.32, 42.32], [-81.47, 41.97], [-82.0, 41.75], [-82.43, 41.93], [-82.25, 41.5], [-82.47, 40.97], [-83.0, 40.75], [-83.25, 40.85], [-83.5, 40.75], [-83.75, 40.85], [-84.0, 40.75], [-84.25, 40.85], [-84.5, 40.75], [-84.75, 40.85], [-85.0, 40.75], [-85.25, 40.85], [-85.5, 40.75], [-85.75, 40.85], [-85.82, 40.82], [-85.97, 40.47], [-86.5, 40.25], [-86.75, 40.35], [-86.82, 40.32], [-86.97, 39.97], [-87.5, 39.75], [-87.75, 39.85], [-88.0, 39.75], [-88.25, 39.85], [-88.5, 39.75], [-88.75, 39.85], [-89.0, 39.75], [-89.25, 39.85], [-89.5, 39.75], [-90.03, 39.97], [-90.18, 40.32], [-90.53, 40.47], [-90.75, 41.0], [-90.53, 41.53], [-90.18, 41.68], [-90.03, 42.03], [-89.5, 42.25], [-89.25, 42.15], [-89.0, 42.25], [-88.75, 42.15], [-88.5, 42.25], [-87.97, 42.03], [-87.82, 41.68], [-87.75, 41.65], [-87.5, 41.75], [-87.25, 41.65], [-87.18, 41.68], [-87.03, 42.03], [-86.5, 42.25], [-86.25, 42.15], [-86.18, 42.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.02999999999997, 42.03], [-86.5, 42.25], [-85.97000000000003, 42.03], [-85.75, 41.5], [-85.97000000000003, 40.97], [-86.5, 40.75], [-87.02999999999997, 40.97], [-87.25, 41.5], [-87.02999999999997, 42.03]]]]}, "2022-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.52999999999997, 40.47], [-90.75, 41.0], [-90.52999999999997, 41.53], [-90.18, 41.68], [-90.02999999999997, 42.03], [-89.5, 42.25], [-89.25, 42.15], [-89.0, 42.25], [-88.75, 42.15], [-88.5, 42.25], [-87.97000000000003, 42.03], [-87.82, 41.68], [-87.75, 41.65], [-87.5, 41.75], [-87.25, 41.65], [-87.18, 41.68], [-87.02999999999997, 42.03], [-86.5, 42.25], [-86.25, 42.15], [-86.18, 42.18], [-86.02999999999997, 42.53], [-85.5, 42.75], [-85.25, 42.65], [-85.0, 42.75], [-84.75, 42.65], [-84.68, 42.68], [-84.52999999999997, 43.03], [-84.0, 43.25], [-83.75, 43.15], [-83.5, 43.25], [-83.25, 43.15], [-83.18, 43.18], [-83.02999999999997, 43.53], [-82.5, 43.75], [-82.0, 43.54], [-81.68, 43.68], [-81.52999999999997, 44.03], [-81.18, 44.18], [-81.02999999999997, 44.53], [-80.5, 44.75], [-80.25, 44.65], [-80.18, 44.68], [-80.02999999999997, 45.03], [-79.5, 45.25], [-78.97000000000003, 45.03], [-78.75, 44.5], [-78.85000000000002, 44.25], [-78.75, 44.0], [-78.97000000000003, 43.47], [-79.5, 43.25], [-79.75, 43.35], [-79.82, 43.32], [-79.97000000000003, 42.97], [-80.5, 42.75], [-80.75, 42.85], [-80.82, 42.82], [-80.97000000000003, 42.47], [-81.32, 42.32], [-81.47000000000003, 41.97], [-82.0, 41.75], [-82.43, 41.93], [-82.25, 41.5], [-82.47000000000003, 40.97], [-83.0, 40.75], [-83.25, 40.85], [-83.5, 40.75], [-83.75, 40.85], [-84.0, 40.75], [-84.25, 40.85], [-84.5, 40.75], [-84.75, 40.85], [-85.0, 40.75], [-85.25, 40.85], [-85.5, 40.75], [-85.75, 40.85], [-85.82, 40.82], [-85.97000000000003, 40.47], [-86.5, 40.25], [-86.75, 40.35], [-86.82, 40.32], [-86.97000000000003, 39.97], [-87.5, 39.75], [-87.75, 39.85], [-88.0, 39.75], [-88.25, 39.85], [-88.5, 39.75], [-88.75, 39.85], [-89.0, 39.75], [-89.25, 39.85], [-89.5, 39.75], [-90.02999999999997, 39.97], [-90.18, 40.32], [-90.52999999999997, 40.47]]]]}, "2022-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.52999999999997, 40.47], [-90.75, 41.0], [-90.52999999999997, 41.53], [-90.18, 41.68], [-90.02999999999997, 42.03], [-89.5, 42.25], [-89.25, 42.15], [-89.0, 42.25], [-88.75, 42.15], [-88.5, 42.25], [-87.97000000000003, 42.03], [-87.82, 41.68], [-87.75, 41.65], [-87.5, 41.75], [-87.25, 41.65], [-87.18, 41.68], [-87.02999999999997, 42.03], [-86.5, 42.25], [-86.25, 42.15], [-86.18, 42.18], [-86.02999999999997, 42.53], [-85.5, 42.75], [-85.25, 42.65], [-85.0, 42.75], [-84.75, 42.65], [-84.68, 42.68], [-84.52999999999997, 43.03], [-84.0, 43.25], [-83.75, 43.15], [-83.5, 43.25], [-83.25, 43.15], [-83.18, 43.18], [-83.02999999999997, 43.53], [-82.5, 43.75], [-82.0, 43.54], [-81.68, 43.68], [-81.52999999999997, 44.03], [-81.18, 44.18], [-81.02999999999997, 44.53], [-80.5, 44.75], [-80.25, 44.65], [-80.18, 44.68], [-80.02999999999997, 45.03], [-79.5, 45.25], [-78.97000000000003, 45.03], [-78.75, 44.5], [-78.85000000000002, 44.25], [-78.75, 44.0], [-78.97000000000003, 43.47], [-79.5, 43.25], [-79.75, 43.35], [-79.82, 43.32], [-79.97000000000003, 42.97], [-80.5, 42.75], [-80.75, 42.85], [-80.82, 42.82], [-80.97000000000003, 42.47], [-81.32, 42.32], [-81.47000000000003, 41.97], [-82.0, 41.75], [-82.43, 41.93], [-82.25, 41.5], [-82.47000000000003, 40.97], [-83.0, 40.75], [-83.25, 40.85], [-83.5, 40.75], [-83.75, 40.85], [-84.0, 40.75], [-84.25, 40.85], [-84.5, 40.75], [-84.75, 40.85], [-85.0, 40.75], [-85.25, 40.85], [-85.5, 40.75], [-85.75, 40.85], [-85.82, 40.82], [-85.97000000000003, 40.47], [-86.5, 40.25], [-86.75, 40.35], [-86.82, 40.32], [-86.97000000000003, 39.97], [-87.5, 39.75], [-87.75, 39.85], [-88.0, 39.75], [-88.25, 39.85], [-88.5, 39.75], [-88.75, 39.85], [-89.0, 39.75], [-89.25, 39.85], [-89.5, 39.75], [-90.02999999999997, 39.97], [-90.18, 40.32], [-90.52999999999997, 40.47]]]]}, "2022-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.52999999999997, 40.47], [-90.75, 41.0], [-90.52999999999997, 41.53], [-90.18, 41.68], [-90.02999999999997, 42.03], [-89.5, 42.25], [-89.25, 42.15], [-89.0, 42.25], [-88.75, 42.15], [-88.5, 42.25], [-87.97000000000003, 42.03], [-87.82, 41.68], [-87.75, 41.65], [-87.5, 41.75], [-87.25, 41.65], [-87.18, 41.68], [-87.02999999999997, 42.03], [-86.5, 42.25], [-86.25, 42.15], [-86.18, 42.18], [-86.02999999999997, 42.53], [-85.5, 42.75], [-85.25, 42.65], [-85.0, 42.75], [-84.75, 42.65], [-84.68, 42.68], [-84.52999999999997, 43.03], [-84.0, 43.25], [-83.75, 43.15], [-83.5, 43.25], [-83.25, 43.15], [-83.18, 43.18], [-83.02999999999997, 43.53], [-82.5, 43.75], [-82.0, 43.54], [-81.68, 43.68], [-81.52999999999997, 44.03], [-81.18, 44.18], [-81.02999999999997, 44.53], [-80.5, 44.75], [-80.25, 44.65], [-80.18, 44.68], [-80.02999999999997, 45.03], [-79.5, 45.25], [-78.97000000000003, 45.03], [-78.75, 44.5], [-78.85000000000002, 44.25], [-78.75, 44.0], [-78.97000000000003, 43.47], [-79.5, 43.25], [-79.75, 43.35], [-79.82, 43.32], [-79.97000000000003, 42.97], [-80.5, 42.75], [-80.75, 42.85], [-80.82, 42.82], [-80.97000000000003, 42.47], [-81.32, 42.32], [-81.47000000000003, 41.97], [-82.0, 41.75], [-82.43, 41.93], [-82.25, 41.5], [-82.47000000000003, 40.97], [-83.0, 40.75], [-83.25, 40.85], [-83.5, 40.75], [-83.75, 40.85], [-84.0, 40.75], [-84.25, 40.85], [-84.5, 40.75], [-84.75, 40.85], [-85.0, 40.75], [-85.25, 40.85], [-85.5, 40.75], [-85.75, 40.85], [-85.82, 40.82], [-85.97000000000003, 40.47], [-86.5, 40.25], [-86.75, 40.35], [-86.82, 40.32], [-86.97000000000003, 39.97], [-87.5, 39.75], [-87.75, 39.85], [-88.0, 39.75], [-88.25, 39.85], [-88.5, 39.75], [-88.75, 39.85], [-89.0, 39.75], [-89.25, 39.85], [-89.5, 39.75], [-90.02999999999997, 39.97], [-90.18, 40.32], [-90.52999999999997, 40.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.843706117238639}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.455195231804136}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.20387312566453, 26.339488791134272, 27.00327356737455, 26.190892870918333]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.20387312566453, 27.93267813226737, 28.202237810007375, 27.783915250343114]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.6436880948350563, 4.207273778384723, 4.9607625739450185, 4.217342200081912]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.6436880948350563, 4.8052912373962045, 6.843706117238639, 5.138589186821662]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.365270979697819, 1.5726987138336583, 1.8313198799486188, 1.5482285233570314]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.365270979697819, 1.8325872249899375, 2.430632139806087, 1.8226368775229178]}}