{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:11.789528", "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": "2025-Jun-28_to_2025-Jul-02_297.0_59.0"}, "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": 2025060002979}, "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": "June 28 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 02 2025"}, "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": 131709.9295906513}, "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": 59.0}, "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": 297.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.5}, "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": 54.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-63.75, 54.0], [-63.97, 53.47], [-64.5, 53.25], [-64.75, 53.35], [-65.0, 53.25], [-65.25, 53.35], [-65.5, 53.25], [-66.03, 53.47], [-66.18, 53.82], [-66.25, 53.85], [-66.5, 53.75], [-66.75, 53.85], [-67.0, 53.75], [-67.25, 53.85], [-67.5, 53.75], [-68.03, 53.97], [-68.25, 54.5], [-68.15, 54.75], [-68.25, 55.0], [-68.15, 55.25], [-68.25, 55.5], [-68.15, 55.75], [-68.25, 56.0], [-68.03, 56.53], [-67.68, 56.68], [-67.53, 57.03], [-67.0, 57.25], [-66.75, 57.15], [-66.5, 57.25], [-66.25, 57.15], [-66.0, 57.25], [-65.75, 57.15], [-65.5, 57.25], [-65.25, 57.15], [-65.18, 57.18], [-65.03, 57.53], [-64.5, 57.75], [-64.25, 57.65], [-64.0, 57.75], [-63.75, 57.65], [-63.68, 57.68], [-63.65, 57.75], [-63.68, 57.82], [-64.03, 57.97], [-64.25, 58.5], [-64.15, 58.75], [-64.18, 58.82], [-64.53, 58.97], [-64.75, 59.5], [-64.65, 59.75], [-64.75, 60.0], [-64.65, 60.25], [-64.75, 60.5], [-64.53, 61.03], [-64.0, 61.25], [-63.75, 61.15], [-63.5, 61.25], [-62.97, 61.03], [-62.82, 60.68], [-62.75, 60.65], [-62.5, 60.75], [-61.97, 60.53], [-61.82, 60.18], [-61.47, 60.03], [-61.25, 59.5], [-61.46, 59.0], [-61.32, 58.68], [-60.97, 58.53], [-60.82, 58.18], [-60.47, 58.03], [-60.25, 57.5], [-60.47, 56.97], [-60.82, 56.82], [-60.87, 56.7], [-60.47, 56.53], [-60.25, 56.0], [-60.47, 55.47], [-61.0, 55.25], [-61.25, 55.35], [-61.5, 55.25], [-61.75, 55.35], [-62.0, 55.25], [-62.25, 55.35], [-62.32, 55.32], [-62.47, 54.97], [-63.0, 54.75], [-63.25, 54.85], [-63.5, 54.75], [-63.75, 54.85], [-64.0, 54.75], [-64.25, 54.85], [-64.5, 54.75], [-63.97, 54.53], [-63.75, 54.0]], [[-64.75, 54.85], [-65.0, 54.75], [-64.75, 54.65], [-64.5, 54.75], [-64.75, 54.85]], [[-65.25, 54.85], [-65.32, 54.82], [-65.35, 54.75], [-65.32, 54.68], [-65.25, 54.65], [-65.0, 54.75], [-65.25, 54.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.75, 60.0], [-64.52999999999997, 60.53], [-64.0, 60.75], [-63.75, 60.65], [-63.5, 60.75], [-63.25, 60.65], [-63.0, 60.75], [-62.75, 60.65], [-62.5, 60.75], [-61.97000000000003, 60.53], [-61.81999999999999, 60.18], [-61.47000000000003, 60.03], [-61.25, 59.5], [-61.45999999999998, 59.0], [-61.31999999999999, 58.68], [-60.97000000000003, 58.53], [-60.75, 58.0], [-60.85000000000002, 57.75], [-60.75, 57.5], [-60.85000000000002, 57.25], [-60.75, 57.0], [-60.97000000000003, 56.47], [-61.31999999999999, 56.32], [-61.47000000000003, 55.97], [-62.0, 55.75], [-62.52999999999997, 55.97], [-62.68000000000001, 56.32], [-63.02999999999997, 56.47], [-63.25, 57.0], [-63.14999999999998, 57.25], [-63.18000000000001, 57.32], [-63.52999999999997, 57.47], [-63.75, 58.0], [-63.64999999999998, 58.25], [-63.68000000000001, 58.32], [-64.02999999999997, 58.47], [-64.18, 58.82], [-64.52999999999997, 58.97], [-64.75, 59.5], [-64.64999999999998, 59.75], [-64.75, 60.0]]]]}, "2025-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.25, 55.0], [-68.14999999999998, 55.25], [-68.25, 55.5], [-68.14999999999998, 55.75], [-68.25, 56.0], [-68.02999999999997, 56.53], [-67.68, 56.68], [-67.52999999999997, 57.03], [-67.0, 57.25], [-66.75, 57.15], [-66.5, 57.25], [-66.25, 57.15], [-66.0, 57.25], [-65.75, 57.15], [-65.5, 57.25], [-65.25, 57.15], [-65.18, 57.18], [-65.02999999999997, 57.53], [-64.5, 57.75], [-64.25, 57.65], [-64.0, 57.75], [-63.75, 57.65], [-63.68000000000001, 57.68], [-63.64999999999998, 57.75], [-63.68000000000001, 57.82], [-64.02999999999997, 57.97], [-64.25, 58.5], [-64.14999999999998, 58.75], [-64.18, 58.82], [-64.52999999999997, 58.97], [-64.75, 59.5], [-64.64999999999998, 59.75], [-64.75, 60.0], [-64.64999999999998, 60.25], [-64.75, 60.5], [-64.52999999999997, 61.03], [-64.0, 61.25], [-63.75, 61.15], [-63.5, 61.25], [-62.97000000000003, 61.03], [-62.81999999999999, 60.68], [-62.75, 60.65], [-62.5, 60.75], [-61.97000000000003, 60.53], [-61.81999999999999, 60.18], [-61.47000000000003, 60.03], [-61.25, 59.5], [-61.45999999999998, 59.0], [-61.31999999999999, 58.68], [-60.97000000000003, 58.53], [-60.81999999999999, 58.18], [-60.47000000000003, 58.03], [-60.25, 57.5], [-60.47000000000003, 56.97], [-60.81999999999999, 56.82], [-60.870000000000005, 56.7], [-60.47000000000003, 56.53], [-60.25, 56.0], [-60.47000000000003, 55.47], [-61.0, 55.25], [-61.25, 55.35], [-61.5, 55.25], [-61.75, 55.35], [-62.0, 55.25], [-62.25, 55.35], [-62.31999999999999, 55.32], [-62.47000000000003, 54.97], [-63.0, 54.75], [-63.25, 54.85], [-63.5, 54.75], [-63.75, 54.85], [-64.0, 54.75], [-64.25, 54.85], [-64.5, 54.75], [-63.97000000000003, 54.53], [-63.75, 54.0], [-63.97000000000003, 53.47], [-64.5, 53.25], [-64.75, 53.35], [-65.0, 53.25], [-65.25, 53.35], [-65.5, 53.25], [-66.02999999999997, 53.47], [-66.18, 53.82], [-66.25, 53.85], [-66.5, 53.75], [-66.75, 53.85], [-67.0, 53.75], [-67.25, 53.85], [-67.5, 53.75], [-68.02999999999997, 53.97], [-68.25, 54.5], [-68.14999999999998, 54.75], [-68.25, 55.0]], [[-64.75, 54.85], [-65.0, 54.75], [-64.75, 54.65], [-64.5, 54.75], [-64.75, 54.85]], [[-65.25, 54.85], [-65.32, 54.82], [-65.35000000000002, 54.75], [-65.32, 54.68], [-65.25, 54.65], [-65.0, 54.75], [-65.25, 54.85]]]]}, "2025-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.25, 55.0], [-68.14999999999998, 55.25], [-68.25, 55.5], [-68.14999999999998, 55.75], [-68.25, 56.0], [-68.02999999999997, 56.53], [-67.68, 56.68], [-67.52999999999997, 57.03], [-67.0, 57.25], [-66.75, 57.15], [-66.5, 57.25], [-66.25, 57.15], [-66.0, 57.25], [-65.75, 57.15], [-65.5, 57.25], [-65.25, 57.15], [-65.18, 57.18], [-65.02999999999997, 57.53], [-64.5, 57.75], [-64.25, 57.65], [-64.0, 57.75], [-63.75, 57.65], [-63.68000000000001, 57.68], [-63.64999999999998, 57.75], [-63.68000000000001, 57.82], [-64.02999999999997, 57.97], [-64.25, 58.5], [-64.14999999999998, 58.75], [-64.18, 58.82], [-64.52999999999997, 58.97], [-64.75, 59.5], [-64.64999999999998, 59.75], [-64.75, 60.0], [-64.64999999999998, 60.25], [-64.75, 60.5], [-64.52999999999997, 61.03], [-64.0, 61.25], [-63.75, 61.15], [-63.5, 61.25], [-62.97000000000003, 61.03], [-62.81999999999999, 60.68], [-62.75, 60.65], [-62.5, 60.75], [-61.97000000000003, 60.53], [-61.81999999999999, 60.18], [-61.47000000000003, 60.03], [-61.25, 59.5], [-61.45999999999998, 59.0], [-61.31999999999999, 58.68], [-60.97000000000003, 58.53], [-60.81999999999999, 58.18], [-60.47000000000003, 58.03], [-60.25, 57.5], [-60.47000000000003, 56.97], [-60.81999999999999, 56.82], [-60.870000000000005, 56.7], [-60.47000000000003, 56.53], [-60.25, 56.0], [-60.47000000000003, 55.47], [-61.0, 55.25], [-61.25, 55.35], [-61.5, 55.25], [-61.75, 55.35], [-62.0, 55.25], [-62.25, 55.35], [-62.31999999999999, 55.32], [-62.47000000000003, 54.97], [-63.0, 54.75], [-63.25, 54.85], [-63.5, 54.75], [-63.75, 54.85], [-64.0, 54.75], [-64.25, 54.85], [-64.5, 54.75], [-63.97000000000003, 54.53], [-63.75, 54.0], [-63.97000000000003, 53.47], [-64.5, 53.25], [-64.75, 53.35], [-65.0, 53.25], [-65.25, 53.35], [-65.5, 53.25], [-66.02999999999997, 53.47], [-66.18, 53.82], [-66.25, 53.85], [-66.5, 53.75], [-66.75, 53.85], [-67.0, 53.75], [-67.25, 53.85], [-67.5, 53.75], [-68.02999999999997, 53.97], [-68.25, 54.5], [-68.14999999999998, 54.75], [-68.25, 55.0]], [[-64.75, 54.85], [-65.0, 54.75], [-64.75, 54.65], [-64.5, 54.75], [-64.75, 54.85]], [[-65.25, 54.85], [-65.32, 54.82], [-65.35000000000002, 54.75], [-65.32, 54.68], [-65.25, 54.65], [-65.0, 54.75], [-65.25, 54.85]]]]}, "2025-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.25, 55.0], [-68.14999999999998, 55.25], [-68.25, 55.5], [-68.14999999999998, 55.75], [-68.25, 56.0], [-68.02999999999997, 56.53], [-67.68, 56.68], [-67.52999999999997, 57.03], [-67.0, 57.25], [-66.75, 57.15], [-66.5, 57.25], [-66.25, 57.15], [-66.0, 57.25], [-65.75, 57.15], [-65.5, 57.25], [-65.25, 57.15], [-65.18, 57.18], [-65.02999999999997, 57.53], [-64.5, 57.75], [-64.25, 57.65], [-64.0, 57.75], [-63.75, 57.65], [-63.68000000000001, 57.68], [-63.64999999999998, 57.75], [-63.68000000000001, 57.82], [-64.02999999999997, 57.97], [-64.25, 58.5], [-64.14999999999998, 58.75], [-64.18, 58.82], [-64.52999999999997, 58.97], [-64.75, 59.5], [-64.64999999999998, 59.75], [-64.75, 60.0], [-64.64999999999998, 60.25], [-64.75, 60.5], [-64.52999999999997, 61.03], [-64.0, 61.25], [-63.75, 61.15], [-63.5, 61.25], [-62.97000000000003, 61.03], [-62.81999999999999, 60.68], [-62.75, 60.65], [-62.5, 60.75], [-61.97000000000003, 60.53], [-61.75, 60.0], [-61.97000000000003, 59.47], [-62.31999999999999, 59.32], [-62.35000000000002, 59.25], [-62.31999999999999, 59.18], [-61.97000000000003, 59.03], [-61.81999999999999, 58.68], [-61.75, 58.65], [-61.5, 58.75], [-60.97000000000003, 58.53], [-60.81999999999999, 58.18], [-60.47000000000003, 58.03], [-60.25, 57.5], [-60.47000000000003, 56.97], [-61.0, 56.75], [-60.47000000000003, 56.53], [-60.25, 56.0], [-60.47000000000003, 55.47], [-61.0, 55.25], [-61.25, 55.35], [-61.5, 55.25], [-61.75, 55.35], [-62.0, 55.25], [-62.25, 55.35], [-62.31999999999999, 55.32], [-62.47000000000003, 54.97], [-63.0, 54.75], [-63.25, 54.85], [-63.5, 54.75], [-63.75, 54.85], [-64.0, 54.75], [-64.25, 54.85], [-64.5, 54.75], [-63.97000000000003, 54.53], [-63.75, 54.0], [-63.97000000000003, 53.47], [-64.5, 53.25], [-64.75, 53.35], [-65.0, 53.25], [-65.25, 53.35], [-65.5, 53.25], [-66.02999999999997, 53.47], [-66.18, 53.82], [-66.25, 53.85], [-66.5, 53.75], [-66.75, 53.85], [-67.0, 53.75], [-67.25, 53.85], [-67.5, 53.75], [-68.02999999999997, 53.97], [-68.25, 54.5], [-68.14999999999998, 54.75], [-68.25, 55.0]], [[-61.25, 56.85], [-61.31999999999999, 56.82], [-61.370000000000005, 56.7], [-61.25, 56.65], [-61.0, 56.75], [-61.25, 56.85]], [[-64.75, 54.85], [-65.0, 54.75], [-64.75, 54.65], [-64.5, 54.75], [-64.75, 54.85]], [[-65.25, 54.85], [-65.32, 54.82], [-65.35000000000002, 54.75], [-65.32, 54.68], [-65.25, 54.65], [-65.0, 54.75], [-65.25, 54.85]]]]}, "2025-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.52999999999997, 53.47], [-65.75, 54.0], [-65.52999999999997, 54.53], [-65.0, 54.75], [-64.75, 54.65], [-64.5, 54.75], [-63.97000000000003, 54.53], [-63.75, 54.0], [-63.97000000000003, 53.47], [-64.5, 53.25], [-64.75, 53.35], [-65.0, 53.25], [-65.52999999999997, 53.47]]], [[[-64.25, 57.0], [-64.02999999999997, 57.53], [-63.68000000000001, 57.68], [-63.52999999999997, 58.03], [-63.0, 58.25], [-62.75, 58.15], [-62.5, 58.25], [-61.97000000000003, 58.03], [-61.81999999999999, 57.68], [-61.47000000000003, 57.53], [-61.25, 57.0], [-61.370000000000005, 56.7], [-61.25, 56.65], [-61.0, 56.75], [-60.47000000000003, 56.53], [-60.25, 56.0], [-60.47000000000003, 55.47], [-61.0, 55.25], [-61.25, 55.35], [-61.5, 55.25], [-61.75, 55.35], [-62.0, 55.25], [-62.25, 55.35], [-62.31999999999999, 55.32], [-62.47000000000003, 54.97], [-63.0, 54.75], [-63.52999999999997, 54.97], [-63.68000000000001, 55.32], [-64.02999999999997, 55.47], [-64.25, 56.0], [-64.14999999999998, 56.25], [-64.25, 56.5], [-64.14999999999998, 56.75], [-64.25, 57.0]]], [[[-63.02999999999997, 59.47], [-63.25, 60.0], [-63.02999999999997, 60.53], [-62.5, 60.75], [-61.97000000000003, 60.53], [-61.75, 60.0], [-61.97000000000003, 59.47], [-62.5, 59.25], [-63.02999999999997, 59.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.612253398123869}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.530144614228404}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.5421082521097, 14.414839844010828, 13.909325552394193, 13.042475919370304, 14.117544781720255]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.527384694417321, 18.98269424438479, 18.531207021077478, 17.291694895426474, 18.70581970214846]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.029661767591482, 6.476623272109662, 5.886024651823827, 4.613987955805483, 5.718581012663299]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.714641063884528, 11.612253398123869, 9.383627355898795, 6.324214396257787, 9.35309784547104]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8159279329904718, 2.2671313331216143, 2.047607149347017, 1.566889137634751, 1.6530233100884566]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5804152182150073, 3.8941286749997666, 3.8509047900544906, 3.3229519394271163, 2.4144741697604384]}}