{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:25.299441", "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-01_to_2022-Aug-06_255.0_40.0"}, "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": 2022080001509}, "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 01 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 06 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 58648.879778030416}, "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": 40.0}, "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": 255.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 255.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 258.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-104.25, 41.15], [-104.18, 41.18], [-104.03, 41.53], [-103.68, 41.68], [-103.53, 42.03], [-103.18, 42.18], [-103.03, 42.53], [-102.68, 42.68], [-102.53, 43.03], [-102.0, 43.25], [-101.47, 43.03], [-101.25, 42.5], [-101.35, 42.25], [-101.32, 42.18], [-100.97, 42.03], [-100.75, 41.5], [-100.97, 40.97], [-101.32, 40.82], [-101.47, 40.47], [-102.0, 40.25], [-102.25, 40.35], [-102.32, 40.32], [-102.47, 39.97], [-102.82, 39.82], [-102.97, 39.47], [-103.32, 39.32], [-103.35, 39.25], [-103.25, 39.0], [-103.47, 38.47], [-104.0, 38.25], [-104.25, 38.35], [-104.5, 38.25], [-105.03, 38.47], [-105.18, 38.82], [-105.53, 38.97], [-105.75, 39.5], [-105.65, 39.75], [-105.75, 40.0], [-105.65, 40.25], [-105.75, 40.5], [-105.53, 41.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.0, 39.25], [-105.53, 39.47], [-105.75, 40.0], [-105.53, 40.53], [-105.0, 40.75], [-104.47, 40.53], [-104.25, 40.0], [-104.47, 39.47], [-105.0, 39.25]]], [[[-102.0, 43.25], [-101.47000000000003, 43.03], [-101.25, 42.5], [-101.37, 42.2], [-100.97000000000003, 42.03], [-100.75, 41.5], [-100.97000000000003, 40.97], [-101.5, 40.75], [-102.02999999999997, 40.97], [-102.19999999999999, 41.38], [-102.5, 41.25], [-103.02999999999997, 41.47], [-103.25, 42.0], [-103.02999999999997, 42.53], [-102.68, 42.68], [-102.52999999999997, 43.03], [-102.0, 43.25]]]]}, "2022-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 39.47], [-105.75, 40.0], [-105.53, 40.53], [-105.0, 40.75], [-104.75, 40.65], [-104.68, 40.68], [-104.53, 41.03], [-104.18, 41.18], [-104.03, 41.53], [-103.68, 41.68], [-103.52999999999997, 42.03], [-103.18, 42.18], [-103.02999999999997, 42.53], [-102.68, 42.68], [-102.52999999999997, 43.03], [-102.0, 43.25], [-101.47000000000003, 43.03], [-101.25, 42.5], [-101.35000000000002, 42.25], [-101.32, 42.18], [-100.97000000000003, 42.03], [-100.75, 41.5], [-100.97000000000003, 40.97], [-101.32, 40.82], [-101.47000000000003, 40.47], [-102.0, 40.25], [-102.25, 40.35], [-102.32, 40.32], [-102.47000000000003, 39.97], [-102.82, 39.82], [-102.97000000000003, 39.47], [-103.32, 39.32], [-103.35000000000002, 39.25], [-103.25, 39.0], [-103.47000000000003, 38.47], [-104.0, 38.25], [-104.25, 38.35], [-104.5, 38.25], [-105.03, 38.47], [-105.25, 39.0], [-105.15, 39.25], [-105.18, 39.32], [-105.53, 39.47]]]]}, "2022-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 39.47], [-105.75, 40.0], [-105.53, 40.53], [-105.0, 40.75], [-104.75, 40.65], [-104.68, 40.68], [-104.53, 41.03], [-104.18, 41.18], [-104.03, 41.53], [-103.68, 41.68], [-103.52999999999997, 42.03], [-103.18, 42.18], [-103.02999999999997, 42.53], [-102.68, 42.68], [-102.52999999999997, 43.03], [-102.0, 43.25], [-101.47000000000003, 43.03], [-101.25, 42.5], [-101.35000000000002, 42.25], [-101.32, 42.18], [-100.97000000000003, 42.03], [-100.75, 41.5], [-100.97000000000003, 40.97], [-101.32, 40.82], [-101.47000000000003, 40.47], [-102.0, 40.25], [-102.25, 40.35], [-102.32, 40.32], [-102.47000000000003, 39.97], [-102.82, 39.82], [-102.97000000000003, 39.47], [-103.32, 39.32], [-103.35000000000002, 39.25], [-103.25, 39.0], [-103.47000000000003, 38.47], [-104.0, 38.25], [-104.25, 38.35], [-104.5, 38.25], [-105.03, 38.47], [-105.25, 39.0], [-105.15, 39.25], [-105.18, 39.32], [-105.53, 39.47]]]]}, "2022-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.75, 40.0], [-105.65, 40.25], [-105.75, 40.5], [-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-104.25, 41.15], [-104.18, 41.18], [-104.03, 41.53], [-103.68, 41.68], [-103.52999999999997, 42.03], [-103.18, 42.18], [-103.02999999999997, 42.53], [-102.68, 42.68], [-102.52999999999997, 43.03], [-102.0, 43.25], [-101.47000000000003, 43.03], [-101.25, 42.5], [-101.35000000000002, 42.25], [-101.25, 42.0], [-101.35000000000002, 41.75], [-101.25, 41.5], [-101.35000000000002, 41.25], [-101.25, 41.0], [-101.47000000000003, 40.47], [-102.0, 40.25], [-102.25, 40.35], [-102.32, 40.32], [-102.47000000000003, 39.97], [-102.82, 39.82], [-102.97000000000003, 39.47], [-103.32, 39.32], [-103.35000000000002, 39.25], [-103.25, 39.0], [-103.47000000000003, 38.47], [-104.0, 38.25], [-104.25, 38.35], [-104.5, 38.25], [-105.03, 38.47], [-105.18, 38.82], [-105.53, 38.97], [-105.75, 39.5], [-105.65, 39.75], [-105.75, 40.0]]]]}, "2022-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.75, 40.0], [-105.65, 40.25], [-105.75, 40.5], [-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-104.25, 41.15], [-104.18, 41.18], [-104.03, 41.53], [-103.68, 41.68], [-103.52999999999997, 42.03], [-103.18, 42.18], [-103.02999999999997, 42.53], [-102.68, 42.68], [-102.52999999999997, 43.03], [-102.0, 43.25], [-101.47000000000003, 43.03], [-101.25, 42.5], [-101.35000000000002, 42.25], [-101.25, 42.0], [-101.35000000000002, 41.75], [-101.25, 41.5], [-101.35000000000002, 41.25], [-101.25, 41.0], [-101.47000000000003, 40.47], [-102.0, 40.25], [-102.25, 40.35], [-102.32, 40.32], [-102.47000000000003, 39.97], [-102.82, 39.82], [-102.97000000000003, 39.47], [-103.32, 39.32], [-103.35000000000002, 39.25], [-103.25, 39.0], [-103.47000000000003, 38.47], [-104.0, 38.25], [-104.25, 38.35], [-104.5, 38.25], [-105.03, 38.47], [-105.18, 38.82], [-105.53, 38.97], [-105.75, 39.5], [-105.65, 39.75], [-105.75, 40.0]]]]}, "2022-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.75, 40.0], [-105.65, 40.25], [-105.75, 40.5], [-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-104.25, 41.15], [-104.0, 41.25], [-103.5, 41.04], [-103.0, 41.25], [-102.47000000000003, 41.03], [-102.25, 40.5], [-102.47000000000003, 39.97], [-102.82, 39.82], [-102.97000000000003, 39.47], [-103.32, 39.32], [-103.35000000000002, 39.25], [-103.25, 39.0], [-103.47000000000003, 38.47], [-104.0, 38.25], [-104.25, 38.35], [-104.5, 38.25], [-105.03, 38.47], [-105.18, 38.82], [-105.53, 38.97], [-105.75, 39.5], [-105.65, 39.75], [-105.75, 40.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.038284743834083}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.823166079710558}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.255067759413123, 27.98533557825391, 26.739562176960078, 26.64350069495714, 28.55592184005144, 26.187896174519494]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.782562405966303, 29.057582640643943, 28.41119038770438, 28.321364988742403, 30.311882472804143, 27.53764673088415]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.835131874593216, 5.32313034982413, 4.18152974405665, 4.229443099554625, 6.126150596232982, 4.057523417369089]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.13030536684272, 6.618646528900911, 5.168982410960325, 5.09242448467046, 8.038284743834083, 4.688748650283117]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.280097064578295, 1.7939446447540646, 1.480567796013739, 1.5867616741663284, 2.3470993023982833, 1.6140379973640422]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3120678339530822, 2.072660353559888, 1.7532281768007916, 1.8719447368240907, 2.9469878621578873, 1.9061668768641613]}}