{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:43.929323", "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-30_to_2022-Jun-01_276.0_44.5"}, "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": 2022050003041}, "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 30 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 01 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": 54506.40197708453}, "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": ["United States"]}, "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": 44.5}, "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": 276.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "276.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 274.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 277.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.0}, "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": [[[[-85.65, 42.25], [-85.75, 42.5], [-85.65, 42.75], [-85.75, 43.0], [-85.53, 43.53], [-85.18, 43.68], [-85.15, 43.75], [-85.25, 44.0], [-85.03, 44.53], [-84.68, 44.68], [-84.53, 45.03], [-84.0, 45.25], [-83.47, 45.03], [-83.25, 44.5], [-83.35, 44.25], [-83.32, 44.18], [-83.25, 44.15], [-83.0, 44.25], [-82.47, 44.03], [-82.25, 43.5], [-82.35, 43.25], [-82.25, 43.0], [-82.47, 42.47], [-82.82, 42.32], [-82.85, 42.25], [-82.75, 42.0], [-82.85, 41.75], [-82.75, 41.5], [-82.97, 40.97], [-83.5, 40.75], [-84.0, 40.96], [-84.5, 40.75], [-84.75, 40.85], [-84.82, 40.82], [-84.97, 40.47], [-85.5, 40.25], [-86.03, 40.47], [-86.25, 41.0], [-86.03, 41.53], [-85.68, 41.68], [-85.65, 41.75], [-85.75, 42.0], [-85.65, 42.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.64999999999998, 41.75], [-85.75, 42.0], [-85.64999999999998, 42.25], [-85.75, 42.5], [-85.64999999999998, 42.75], [-85.75, 43.0], [-85.52999999999997, 43.53], [-85.18, 43.68], [-85.14999999999998, 43.75], [-85.25, 44.0], [-85.02999999999997, 44.53], [-84.68, 44.68], [-84.52999999999997, 45.03], [-84.0, 45.25], [-83.47000000000003, 45.03], [-83.25, 44.5], [-83.35000000000002, 44.25], [-83.32, 44.18], [-83.25, 44.15], [-83.0, 44.25], [-82.47000000000003, 44.03], [-82.25, 43.5], [-82.35000000000002, 43.25], [-82.25, 43.0], [-82.47000000000003, 42.47], [-82.82, 42.32], [-82.85000000000002, 42.25], [-82.75, 42.0], [-82.85000000000002, 41.75], [-82.75, 41.5], [-82.97000000000003, 40.97], [-83.5, 40.75], [-84.0, 40.96], [-84.5, 40.75], [-84.75, 40.85], [-84.82, 40.82], [-84.97000000000003, 40.47], [-85.5, 40.25], [-86.02999999999997, 40.47], [-86.25, 41.0], [-86.02999999999997, 41.53], [-85.68, 41.68], [-85.64999999999998, 41.75]]]]}, "2022-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.64999999999998, 41.75], [-85.75, 42.0], [-85.64999999999998, 42.25], [-85.75, 42.5], [-85.64999999999998, 42.75], [-85.75, 43.0], [-85.52999999999997, 43.53], [-85.18, 43.68], [-85.14999999999998, 43.75], [-85.25, 44.0], [-85.02999999999997, 44.53], [-84.68, 44.68], [-84.52999999999997, 45.03], [-84.0, 45.25], [-83.47000000000003, 45.03], [-83.25, 44.5], [-83.35000000000002, 44.25], [-83.32, 44.18], [-83.25, 44.15], [-83.0, 44.25], [-82.47000000000003, 44.03], [-82.25, 43.5], [-82.35000000000002, 43.25], [-82.25, 43.0], [-82.47000000000003, 42.47], [-82.82, 42.32], [-82.85000000000002, 42.25], [-82.75, 42.0], [-82.85000000000002, 41.75], [-82.75, 41.5], [-82.97000000000003, 40.97], [-83.5, 40.75], [-84.0, 40.96], [-84.5, 40.75], [-84.75, 40.85], [-84.82, 40.82], [-84.97000000000003, 40.47], [-85.5, 40.25], [-86.02999999999997, 40.47], [-86.25, 41.0], [-86.02999999999997, 41.53], [-85.68, 41.68], [-85.64999999999998, 41.75]]]]}, "2022-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.64999999999998, 41.75], [-85.75, 42.0], [-85.64999999999998, 42.25], [-85.75, 42.5], [-85.64999999999998, 42.75], [-85.75, 43.0], [-85.52999999999997, 43.53], [-85.18, 43.68], [-85.14999999999998, 43.75], [-85.25, 44.0], [-85.02999999999997, 44.53], [-84.68, 44.68], [-84.52999999999997, 45.03], [-84.0, 45.25], [-83.47000000000003, 45.03], [-83.25, 44.5], [-83.35000000000002, 44.25], [-83.32, 44.18], [-83.25, 44.15], [-83.0, 44.25], [-82.47000000000003, 44.03], [-82.25, 43.5], [-82.35000000000002, 43.25], [-82.25, 43.0], [-82.47000000000003, 42.47], [-82.82, 42.32], [-82.85000000000002, 42.25], [-82.75, 42.0], [-82.85000000000002, 41.75], [-82.75, 41.5], [-82.97000000000003, 40.97], [-83.5, 40.75], [-84.0, 40.96], [-84.5, 40.75], [-84.75, 40.85], [-84.82, 40.82], [-84.97000000000003, 40.47], [-85.5, 40.25], [-86.02999999999997, 40.47], [-86.25, 41.0], [-86.02999999999997, 41.53], [-85.68, 41.68], [-85.64999999999998, 41.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.620936476913414}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.519550350305896}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.08589144983199, 26.99885615483828, 24.48760393080221]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.737778195718363, 27.53404311697801, 25.72723786121503]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.003472409033672, 8.977832998832064, 6.5773456430519515]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.154835282689476, 10.620936476913414, 7.471664704459499]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5707231116681672, 2.1269759631034026, 1.605285515811394]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9574696600749042, 2.3980051923379584, 1.8083191857855037]}}