{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:34.302796", "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": "2015-Jul-30_to_2015-Aug-05_282.5_64.0"}, "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": 2015070003203}, "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": "July 30 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 05 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 67752.43049823525}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["Hudson Strait", "The Northwestern Passages"]}, "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": 64.0}, "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": 282.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 280.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 287.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.75, 66.5], [-75.53, 67.03], [-75.0, 67.25], [-74.75, 67.15], [-74.5, 67.25], [-73.97, 67.03], [-73.75, 66.5], [-73.97, 65.97], [-74.5, 65.75], [-74.75, 65.85], [-75.0, 65.75], [-75.53, 65.97], [-75.75, 66.5]]], [[[-78.53, 66.97], [-78.75, 67.5], [-78.53, 68.03], [-78.0, 68.25], [-77.47, 68.03], [-77.25, 67.5], [-77.47, 66.97], [-78.0, 66.75], [-78.53, 66.97]]]]}, "2015-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.03, 67.53], [-79.5, 67.75], [-79.25, 67.65], [-79.0, 67.75], [-78.75, 67.65], [-78.68, 67.68], [-78.53, 68.03], [-78.0, 68.25], [-77.47, 68.03], [-77.32, 67.68], [-76.97, 67.53], [-76.82, 67.18], [-76.75, 67.15], [-76.5, 67.25], [-76.25, 67.15], [-76.0, 67.25], [-75.75, 67.15], [-75.5, 67.25], [-75.25, 67.15], [-75.0, 67.25], [-74.75, 67.15], [-74.5, 67.25], [-73.97, 67.03], [-73.75, 66.5], [-73.97, 65.97], [-74.32, 65.82], [-74.47, 65.47], [-74.82, 65.32], [-74.97, 64.97], [-75.5, 64.75], [-75.25, 64.65], [-75.0, 64.75], [-74.75, 64.65], [-74.5, 64.75], [-74.25, 64.65], [-74.0, 64.75], [-73.75, 64.65], [-73.5, 64.75], [-72.97, 64.53], [-72.82, 64.18], [-72.47, 64.03], [-72.25, 63.5], [-72.47, 62.97], [-73.0, 62.75], [-73.53, 62.97], [-73.68, 63.32], [-73.75, 63.35], [-74.0, 63.25], [-74.25, 63.35], [-74.5, 63.25], [-74.75, 63.35], [-75.0, 63.25], [-75.25, 63.35], [-75.32, 63.32], [-75.47, 62.97], [-76.0, 62.75], [-76.25, 62.85], [-76.5, 62.75], [-77.03, 62.97], [-77.18, 63.32], [-77.25, 63.35], [-77.5, 63.25], [-77.75, 63.35], [-78.0, 63.25], [-78.53, 63.47], [-78.68, 63.82], [-78.75, 63.85], [-79.0, 63.75], [-79.53, 63.97], [-79.75, 64.5], [-79.65, 64.75], [-79.75, 65.0], [-79.65, 65.25], [-79.75, 65.5], [-79.65, 65.75], [-79.68, 65.82], [-80.03, 65.97], [-80.25, 66.5], [-80.15, 66.75], [-80.25, 67.0], [-80.03, 67.53]], [[-75.75, 64.85], [-76.0, 64.75], [-75.75, 64.65], [-75.5, 64.75], [-75.75, 64.85]], [[-76.25, 64.85], [-76.5, 64.75], [-76.25, 64.65], [-76.0, 64.75], [-76.25, 64.85]], [[-77.0, 64.96], [-77.32, 64.82], [-77.37, 64.7], [-77.25, 64.65], [-77.0, 64.75], [-76.75, 64.65], [-76.5, 64.75], [-77.0, 64.96]]]]}, "2015-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.03, 67.53], [-79.5, 67.75], [-79.25, 67.65], [-79.0, 67.75], [-78.75, 67.65], [-78.68, 67.68], [-78.53, 68.03], [-78.0, 68.25], [-77.47, 68.03], [-77.32, 67.68], [-76.97, 67.53], [-76.82, 67.18], [-76.75, 67.15], [-76.5, 67.25], [-76.25, 67.15], [-76.0, 67.25], [-75.75, 67.15], [-75.5, 67.25], [-75.25, 67.15], [-75.18, 67.18], [-75.03, 67.53], [-74.5, 67.75], [-74.25, 67.65], [-74.0, 67.75], [-73.47, 67.53], [-73.25, 67.0], [-73.35, 66.75], [-73.25, 66.5], [-73.47, 65.97], [-74.0, 65.75], [-74.25, 65.85], [-74.32, 65.82], [-74.47, 65.47], [-74.82, 65.32], [-74.97, 64.97], [-75.5, 64.75], [-75.25, 64.65], [-75.0, 64.75], [-74.75, 64.65], [-74.5, 64.75], [-74.25, 64.65], [-74.0, 64.75], [-73.75, 64.65], [-73.5, 64.75], [-72.97, 64.53], [-72.82, 64.18], [-72.47, 64.03], [-72.25, 63.5], [-72.47, 62.97], [-73.0, 62.75], [-73.53, 62.97], [-73.68, 63.32], [-73.75, 63.35], [-74.0, 63.25], [-74.25, 63.35], [-74.5, 63.25], [-74.75, 63.35], [-75.0, 63.25], [-75.25, 63.35], [-75.32, 63.32], [-75.47, 62.97], [-76.0, 62.75], [-76.25, 62.85], [-76.5, 62.75], [-77.03, 62.97], [-77.18, 63.32], [-77.25, 63.35], [-77.5, 63.25], [-77.75, 63.35], [-78.0, 63.25], [-78.53, 63.47], [-78.68, 63.82], [-78.75, 63.85], [-79.0, 63.75], [-79.53, 63.97], [-79.75, 64.5], [-79.65, 64.75], [-79.75, 65.0], [-79.65, 65.25], [-79.75, 65.5], [-79.65, 65.75], [-79.68, 65.82], [-80.03, 65.97], [-80.25, 66.5], [-80.15, 66.75], [-80.25, 67.0], [-80.03, 67.53]], [[-75.75, 64.85], [-76.0, 64.75], [-75.75, 64.65], [-75.5, 64.75], [-75.75, 64.85]], [[-76.25, 64.85], [-76.5, 64.75], [-76.25, 64.65], [-76.0, 64.75], [-76.25, 64.85]], [[-77.0, 64.96], [-77.32, 64.82], [-77.37, 64.7], [-77.25, 64.65], [-77.0, 64.75], [-76.75, 64.65], [-76.5, 64.75], [-77.0, 64.96]]]]}, "2015-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.03, 67.53], [-79.5, 67.75], [-79.25, 67.65], [-79.0, 67.75], [-78.75, 67.65], [-78.5, 67.75], [-78.25, 67.65], [-78.0, 67.75], [-77.75, 67.65], [-77.5, 67.75], [-76.97, 67.53], [-76.82, 67.18], [-76.75, 67.15], [-76.5, 67.25], [-76.25, 67.15], [-76.0, 67.25], [-75.75, 67.15], [-75.5, 67.25], [-75.25, 67.15], [-75.18, 67.18], [-75.03, 67.53], [-74.5, 67.75], [-74.25, 67.65], [-74.0, 67.75], [-73.47, 67.53], [-73.25, 67.0], [-73.35, 66.75], [-73.25, 66.5], [-73.47, 65.97], [-74.0, 65.75], [-74.25, 65.85], [-74.32, 65.82], [-74.47, 65.47], [-74.82, 65.32], [-74.97, 64.97], [-75.5, 64.75], [-75.25, 64.65], [-75.0, 64.75], [-74.75, 64.65], [-74.5, 64.75], [-74.25, 64.65], [-74.0, 64.75], [-73.75, 64.65], [-73.5, 64.75], [-72.97, 64.53], [-72.82, 64.18], [-72.47, 64.03], [-72.25, 63.5], [-72.47, 62.97], [-73.0, 62.75], [-73.53, 62.97], [-73.68, 63.32], [-73.75, 63.35], [-74.0, 63.25], [-74.25, 63.35], [-74.5, 63.25], [-74.75, 63.35], [-75.0, 63.25], [-75.25, 63.35], [-75.32, 63.32], [-75.47, 62.97], [-76.0, 62.75], [-76.25, 62.85], [-76.5, 62.75], [-77.03, 62.97], [-77.18, 63.32], [-77.25, 63.35], [-77.5, 63.25], [-77.75, 63.35], [-78.0, 63.25], [-78.53, 63.47], [-78.68, 63.82], [-78.75, 63.85], [-79.0, 63.75], [-79.53, 63.97], [-79.75, 64.5], [-79.65, 64.75], [-79.75, 65.0], [-79.65, 65.25], [-79.75, 65.5], [-79.65, 65.75], [-79.68, 65.82], [-80.03, 65.97], [-80.25, 66.5], [-80.15, 66.75], [-80.25, 67.0], [-80.03, 67.53]], [[-75.75, 64.85], [-76.0, 64.75], [-75.75, 64.65], [-75.5, 64.75], [-75.75, 64.85]], [[-76.25, 64.85], [-76.5, 64.75], [-76.25, 64.65], [-76.0, 64.75], [-76.25, 64.85]], [[-77.0, 64.96], [-77.32, 64.82], [-77.37, 64.7], [-77.25, 64.65], [-77.0, 64.75], [-76.75, 64.65], [-76.5, 64.75], [-77.0, 64.96]]]]}, "2015-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.75, 65.5], [-79.53, 66.03], [-79.0, 66.25], [-78.75, 66.15], [-78.5, 66.25], [-78.25, 66.15], [-78.0, 66.25], [-77.47, 66.03], [-77.25, 65.5], [-77.47, 64.97], [-77.82, 64.82], [-77.85, 64.75], [-77.82, 64.68], [-77.75, 64.65], [-77.5, 64.75], [-77.25, 64.65], [-77.0, 64.75], [-76.75, 64.65], [-76.5, 64.75], [-76.25, 64.65], [-76.0, 64.75], [-75.47, 64.53], [-75.25, 64.0], [-75.47, 63.47], [-76.0, 63.25], [-76.25, 63.35], [-76.5, 63.25], [-76.75, 63.35], [-77.0, 63.25], [-77.25, 63.35], [-77.5, 63.25], [-77.75, 63.35], [-78.0, 63.25], [-78.53, 63.47], [-78.68, 63.82], [-78.75, 63.85], [-79.0, 63.75], [-79.53, 63.97], [-79.75, 64.5], [-79.65, 64.75], [-79.75, 65.0], [-79.65, 65.25], [-79.75, 65.5]]], [[[-76.25, 66.5], [-76.03, 67.03], [-75.5, 67.25], [-75.25, 67.15], [-75.18, 67.18], [-75.03, 67.53], [-74.5, 67.75], [-74.25, 67.65], [-74.0, 67.75], [-73.47, 67.53], [-73.25, 67.0], [-73.35, 66.75], [-73.25, 66.5], [-73.47, 65.97], [-74.0, 65.75], [-74.25, 65.85], [-74.5, 65.75], [-74.75, 65.85], [-75.0, 65.75], [-75.25, 65.85], [-75.5, 65.75], [-76.03, 65.97], [-76.25, 66.5]]]]}, "2015-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.25, 64.5], [-79.03, 65.03], [-78.5, 65.25], [-77.97, 65.03], [-77.82, 64.68], [-77.75, 64.65], [-77.5, 64.75], [-77.25, 64.65], [-77.0, 64.75], [-76.47, 64.53], [-76.25, 64.0], [-76.47, 63.47], [-77.0, 63.25], [-77.25, 63.35], [-77.5, 63.25], [-77.75, 63.35], [-78.0, 63.25], [-78.53, 63.47], [-78.68, 63.82], [-79.03, 63.97], [-79.25, 64.5]]]]}, "2015-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.5, 64.75], [-76.97, 64.53], [-76.75, 64.0], [-76.97, 63.47], [-77.5, 63.25], [-78.03, 63.47], [-78.25, 64.0], [-78.03, 64.53], [-77.5, 64.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.696301278285262}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.2928218118748944}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.578577199875895, 5.395132584805367, 5.514866782260583, 5.808215846456733, 5.857645186187426, 5.540570634722542, 5.2921701863048725]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.248575658734524, 8.390233718760044, 7.851457695347392, 8.29091606544705, 7.694436419651822, 5.826780263780222, 5.2921701863048725]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.0151083780200643, 2.1435087483466178, 2.2504576944669075, 2.4863908428404935, 2.4678575357506056, 1.7721104371168508, 1.5542133080064673]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.5798844594391426, 3.4060882430666766, 3.586520384430173, 4.696301278285262, 3.8574386316684013, 1.968207430756479, 1.5542133080064673]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4990740763714463, 1.6782391778677608, 1.7044276432143992, 1.848666634903241, 1.7349637247632907, 1.482592614638989, 1.3547400277042083]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7162480736098433, 2.3599054662828083, 2.219091537169332, 2.795457694441423, 2.2176004485515968, 1.686631942575798, 1.3547400277042083]}}