{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:40.709348", "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-26_to_2022-May-30_296.5_46.0"}, "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": 2022050002812}, "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 26 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 30 2022"}, "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": 61802.88129588267}, "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"]}, "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": 46.0}, "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": 296.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 293.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-65.75, 45.65], [-65.68, 45.68], [-65.53, 46.03], [-65.0, 46.25], [-64.75, 46.15], [-64.5, 46.25], [-64.25, 46.15], [-64.18, 46.18], [-64.03, 46.53], [-63.5, 46.75], [-62.97, 46.53], [-62.75, 46.0], [-62.93, 45.57], [-62.5, 45.75], [-61.97, 45.53], [-61.82, 45.18], [-61.75, 45.15], [-61.5, 45.25], [-61.25, 45.15], [-61.0, 45.25], [-60.47, 45.03], [-60.25, 44.5], [-60.47, 43.97], [-61.0, 43.75], [-61.25, 43.85], [-61.5, 43.75], [-61.75, 43.85], [-61.82, 43.82], [-61.97, 43.47], [-62.32, 43.32], [-62.47, 42.97], [-63.0, 42.75], [-63.25, 42.85], [-63.5, 42.75], [-63.75, 42.85], [-64.0, 42.75], [-64.25, 42.85], [-64.5, 42.75], [-64.75, 42.85], [-65.0, 42.75], [-65.25, 42.85], [-65.5, 42.75], [-66.03, 42.97], [-66.18, 43.32], [-66.53, 43.47], [-66.75, 44.0], [-66.62, 44.3], [-67.03, 44.47], [-67.25, 45.0], [-67.03, 45.53], [-66.5, 45.75], [-66.25, 45.65], [-66.0, 45.75], [-65.75, 45.65]], [[-64.68, 44.68], [-64.65, 44.75], [-64.68, 44.82], [-64.75, 44.85], [-64.82, 44.82], [-64.93, 44.57], [-64.68, 44.68]], [[-63.07, 45.43], [-63.13, 45.4], [-63.32, 45.32], [-63.35, 45.25], [-63.32, 45.18], [-63.25, 45.15], [-63.18, 45.18], [-63.07, 45.43]], [[-65.07, 44.43], [-65.37, 44.3], [-65.32, 44.18], [-65.25, 44.15], [-65.18, 44.18], [-65.07, 44.43]]]]}}, "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": {"2022-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.02999999999997, 46.53], [-63.5, 46.75], [-62.97000000000003, 46.53], [-62.75, 46.0], [-62.97000000000003, 45.47], [-63.5, 45.25], [-64.02999999999997, 45.47], [-64.25, 46.0], [-64.02999999999997, 46.53]]]]}, "2022-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.52999999999997, 44.47], [-66.75, 45.0], [-66.52999999999997, 45.53], [-66.0, 45.75], [-65.75, 45.65], [-65.5, 45.75], [-64.97000000000003, 45.53], [-64.75, 45.0], [-64.93, 44.57], [-64.68, 44.68], [-64.52999999999997, 45.03], [-64.0, 45.25], [-63.5, 45.04], [-63.0, 45.25], [-62.75, 45.15], [-62.5, 45.25], [-62.25, 45.15], [-62.0, 45.25], [-61.75, 45.15], [-61.5, 45.25], [-61.25, 45.15], [-61.0, 45.25], [-60.47000000000003, 45.03], [-60.25, 44.5], [-60.47000000000003, 43.97], [-61.0, 43.75], [-61.25, 43.85], [-61.5, 43.75], [-61.75, 43.85], [-61.81999999999999, 43.82], [-61.97000000000003, 43.47], [-62.31999999999999, 43.32], [-62.47000000000003, 42.97], [-63.0, 42.75], [-63.25, 42.85], [-63.5, 42.75], [-63.75, 42.85], [-64.0, 42.75], [-64.25, 42.85], [-64.5, 42.75], [-64.75, 42.85], [-65.0, 42.75], [-65.25, 42.85], [-65.5, 42.75], [-66.02999999999997, 42.97], [-66.25, 43.5], [-66.02999999999997, 44.03], [-65.5, 44.25], [-65.75, 44.35], [-66.0, 44.25], [-66.52999999999997, 44.47]], [[-65.25, 44.15], [-65.18, 44.18], [-65.07, 44.43], [-65.5, 44.25], [-65.25, 44.15]]], [[[-63.5, 45.25], [-64.02999999999997, 45.47], [-64.25, 46.0], [-64.02999999999997, 46.53], [-63.5, 46.75], [-62.97000000000003, 46.53], [-62.75, 46.0], [-62.97000000000003, 45.47], [-63.5, 45.25]]]]}, "2022-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.02999999999997, 44.47], [-67.25, 45.0], [-67.02999999999997, 45.53], [-66.5, 45.75], [-66.25, 45.65], [-66.0, 45.75], [-65.75, 45.65], [-65.68, 45.68], [-65.52999999999997, 46.03], [-65.0, 46.25], [-64.75, 46.15], [-64.5, 46.25], [-64.25, 46.15], [-64.18, 46.18], [-64.02999999999997, 46.53], [-63.5, 46.75], [-62.97000000000003, 46.53], [-62.75, 46.0], [-62.93000000000001, 45.57], [-62.5, 45.75], [-61.97000000000003, 45.53], [-61.81999999999999, 45.18], [-61.75, 45.15], [-61.5, 45.25], [-61.25, 45.15], [-61.0, 45.25], [-60.47000000000003, 45.03], [-60.25, 44.5], [-60.47000000000003, 43.97], [-61.0, 43.75], [-61.25, 43.85], [-61.5, 43.75], [-61.75, 43.85], [-61.81999999999999, 43.82], [-61.97000000000003, 43.47], [-62.31999999999999, 43.32], [-62.47000000000003, 42.97], [-63.0, 42.75], [-63.25, 42.85], [-63.5, 42.75], [-63.75, 42.85], [-64.0, 42.75], [-64.25, 42.85], [-64.5, 42.75], [-64.75, 42.85], [-65.0, 42.75], [-65.25, 42.85], [-65.5, 42.75], [-66.02999999999997, 42.97], [-66.18, 43.32], [-66.52999999999997, 43.47], [-66.75, 44.0], [-66.62, 44.3], [-67.02999999999997, 44.47]], [[-65.25, 44.15], [-65.18, 44.18], [-65.07, 44.43], [-65.37, 44.3], [-65.32, 44.18], [-65.25, 44.15]], [[-64.93, 44.57], [-64.68, 44.68], [-64.64999999999998, 44.75], [-64.68, 44.82], [-64.75, 44.85], [-64.82, 44.82], [-64.93, 44.57]], [[-63.25, 45.15], [-63.18000000000001, 45.18], [-63.06999999999999, 45.43], [-63.31999999999999, 45.32], [-63.35000000000002, 45.25], [-63.31999999999999, 45.18], [-63.25, 45.15]]]]}, "2022-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.02999999999997, 44.47], [-67.25, 45.0], [-67.02999999999997, 45.53], [-66.5, 45.75], [-66.25, 45.65], [-66.0, 45.75], [-65.75, 45.65], [-65.68, 45.68], [-65.52999999999997, 46.03], [-65.0, 46.25], [-64.75, 46.15], [-64.5, 46.25], [-64.25, 46.15], [-64.18, 46.18], [-64.02999999999997, 46.53], [-63.5, 46.75], [-62.97000000000003, 46.53], [-62.75, 46.0], [-62.93000000000001, 45.57], [-62.5, 45.75], [-61.97000000000003, 45.53], [-61.81999999999999, 45.18], [-61.75, 45.15], [-61.5, 45.25], [-61.25, 45.15], [-61.0, 45.25], [-60.47000000000003, 45.03], [-60.25, 44.5], [-60.47000000000003, 43.97], [-61.0, 43.75], [-61.25, 43.85], [-61.5, 43.75], [-61.75, 43.85], [-61.81999999999999, 43.82], [-61.97000000000003, 43.47], [-62.31999999999999, 43.32], [-62.47000000000003, 42.97], [-63.0, 42.75], [-63.25, 42.85], [-63.5, 42.75], [-63.75, 42.85], [-64.0, 42.75], [-64.25, 42.85], [-64.5, 42.75], [-64.75, 42.85], [-65.0, 42.75], [-65.25, 42.85], [-65.5, 42.75], [-66.02999999999997, 42.97], [-66.18, 43.32], [-66.52999999999997, 43.47], [-66.75, 44.0], [-66.62, 44.3], [-67.02999999999997, 44.47]], [[-65.25, 44.15], [-65.18, 44.18], [-65.07, 44.43], [-65.37, 44.3], [-65.32, 44.18], [-65.25, 44.15]], [[-64.93, 44.57], [-64.68, 44.68], [-64.64999999999998, 44.75], [-64.68, 44.82], [-64.75, 44.85], [-64.82, 44.82], [-64.93, 44.57]], [[-63.25, 45.15], [-63.18000000000001, 45.18], [-63.06999999999999, 45.43], [-63.31999999999999, 45.32], [-63.35000000000002, 45.25], [-63.31999999999999, 45.18], [-63.25, 45.15]]]]}, "2022-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.02999999999997, 44.47], [-67.25, 45.0], [-67.02999999999997, 45.53], [-66.5, 45.75], [-66.25, 45.65], [-66.0, 45.75], [-65.75, 45.65], [-65.68, 45.68], [-65.52999999999997, 46.03], [-65.0, 46.25], [-64.75, 46.15], [-64.5, 46.25], [-64.25, 46.15], [-64.18, 46.18], [-64.02999999999997, 46.53], [-63.5, 46.75], [-62.97000000000003, 46.53], [-62.75, 46.0], [-62.93000000000001, 45.57], [-62.5, 45.75], [-61.97000000000003, 45.53], [-61.81999999999999, 45.18], [-61.75, 45.15], [-61.5, 45.25], [-61.25, 45.15], [-61.0, 45.25], [-60.47000000000003, 45.03], [-60.25, 44.5], [-60.47000000000003, 43.97], [-61.0, 43.75], [-61.25, 43.85], [-61.5, 43.75], [-61.75, 43.85], [-61.81999999999999, 43.82], [-61.97000000000003, 43.47], [-62.31999999999999, 43.32], [-62.47000000000003, 42.97], [-63.0, 42.75], [-63.25, 42.85], [-63.5, 42.75], [-63.75, 42.85], [-64.0, 42.75], [-64.25, 42.85], [-64.5, 42.75], [-64.75, 42.85], [-65.0, 42.75], [-65.25, 42.85], [-65.5, 42.75], [-66.02999999999997, 42.97], [-66.18, 43.32], [-66.52999999999997, 43.47], [-66.75, 44.0], [-66.62, 44.3], [-67.02999999999997, 44.47]], [[-65.25, 44.15], [-65.18, 44.18], [-65.07, 44.43], [-65.37, 44.3], [-65.32, 44.18], [-65.25, 44.15]], [[-64.93, 44.57], [-64.68, 44.68], [-64.64999999999998, 44.75], [-64.68, 44.82], [-64.75, 44.85], [-64.82, 44.82], [-64.93, 44.57]], [[-63.25, 45.15], [-63.18000000000001, 45.18], [-63.06999999999999, 45.43], [-63.31999999999999, 45.32], [-63.35000000000002, 45.25], [-63.31999999999999, 45.18], [-63.25, 45.15]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.0917371602537855}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.4395543836656883}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.672463222404645, 11.395469161303708, 13.193175436924605, 12.48044521404205, 12.947706248017994]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.672463222404645, 12.471798235449398, 17.525455158724867, 17.91288799783024, 18.524522589774676]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.948201591285965, 2.9180670026559796, 4.037291683244571, 3.182968501071784, 3.4527279814154923]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.948201591285965, 3.4383395603009603, 6.0917371602537855, 5.374546926257324, 5.619188438924255]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6080454428185766, 1.7280543608823138, 2.216225349974074, 1.6822667130587357, 1.8527978209669311]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6080454428185766, 2.023544372458952, 2.731148853406309, 2.4538388818031294, 2.686548069946864]}}