{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:18.109144", "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": "2012-Aug-22_to_2012-Aug-27_272.5_47.0"}, "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": 2012080002674}, "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 22 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 27 2012"}, "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": 391442.5714852788}, "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", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.North-America", "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": []}, "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": 47.0}, "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": 272.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "272.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 268.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 284.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.25, 47.0], [-88.03, 47.53], [-87.5, 47.75], [-87.25, 47.65], [-87.0, 47.75], [-86.75, 47.65], [-86.5, 47.75], [-86.25, 47.65], [-86.0, 47.75], [-85.75, 47.65], [-85.5, 47.75], [-85.25, 47.65], [-85.0, 47.75], [-84.47, 47.53], [-84.25, 47.0], [-84.47, 46.47], [-85.0, 46.25], [-85.25, 46.35], [-85.5, 46.25], [-85.75, 46.35], [-86.0, 46.25], [-86.25, 46.35], [-86.32, 46.32], [-86.47, 45.97], [-87.0, 45.75], [-87.53, 45.97], [-87.68, 46.32], [-88.03, 46.47], [-88.25, 47.0]]]]}, "2012-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.53, 43.47], [-82.75, 44.0], [-82.53, 44.53], [-82.0, 44.75], [-81.47, 44.53], [-81.25, 44.0], [-81.47, 43.47], [-82.0, 43.25], [-82.53, 43.47]]], [[[-87.5, 47.75], [-87.25, 47.65], [-87.0, 47.75], [-86.75, 47.65], [-86.5, 47.75], [-86.25, 47.65], [-86.0, 47.75], [-85.75, 47.65], [-85.5, 47.75], [-85.25, 47.65], [-85.0, 47.75], [-84.47, 47.53], [-84.25, 47.0], [-84.47, 46.47], [-85.0, 46.25], [-85.25, 46.35], [-85.5, 46.25], [-85.75, 46.35], [-85.82, 46.32], [-85.97, 45.97], [-86.5, 45.75], [-86.75, 45.85], [-87.0, 45.75], [-87.53, 45.97], [-87.68, 46.32], [-88.03, 46.47], [-88.25, 47.0], [-88.03, 47.53], [-87.5, 47.75]]], [[[-87.5, 49.25], [-86.97, 49.03], [-86.75, 48.5], [-86.97, 47.97], [-87.5, 47.75], [-88.03, 47.97], [-88.25, 48.5], [-88.03, 49.03], [-87.5, 49.25]]]]}, "2012-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.03, 45.97], [-92.25, 46.5], [-92.03, 47.03], [-91.5, 47.25], [-91.25, 47.15], [-91.0, 47.25], [-90.75, 47.15], [-90.5, 47.25], [-90.25, 47.15], [-90.0, 47.25], [-89.75, 47.15], [-89.5, 47.25], [-89.25, 47.15], [-89.18, 47.18], [-89.03, 47.53], [-88.68, 47.68], [-88.53, 48.03], [-88.12, 48.2], [-88.18, 48.32], [-88.53, 48.47], [-88.68, 48.82], [-89.03, 48.97], [-89.25, 49.5], [-89.03, 50.03], [-88.5, 50.25], [-88.25, 50.15], [-88.0, 50.25], [-87.75, 50.15], [-87.5, 50.25], [-87.25, 50.15], [-87.0, 50.25], [-86.75, 50.15], [-86.5, 50.25], [-85.97, 50.03], [-85.82, 49.68], [-85.5, 49.54], [-85.0, 49.75], [-84.5, 49.54], [-84.0, 49.75], [-83.75, 49.65], [-83.5, 49.75], [-82.97, 49.53], [-82.82, 49.18], [-82.47, 49.03], [-82.32, 48.68], [-81.97, 48.53], [-81.75, 48.0], [-81.85, 47.75], [-81.75, 47.5], [-81.85, 47.25], [-81.75, 47.0], [-81.87, 46.7], [-81.75, 46.65], [-81.5, 46.75], [-81.25, 46.65], [-81.0, 46.75], [-80.47, 46.53], [-80.32, 46.18], [-79.97, 46.03], [-79.75, 45.5], [-79.85, 45.25], [-79.75, 45.0], [-79.97, 44.47], [-80.5, 44.25], [-80.8, 44.38], [-80.97, 43.97], [-81.32, 43.82], [-81.35, 43.75], [-81.25, 43.5], [-81.47, 42.97], [-82.0, 42.75], [-82.53, 42.97], [-82.68, 43.32], [-83.03, 43.47], [-83.18, 43.82], [-83.53, 43.97], [-83.7, 44.38], [-84.0, 44.25], [-84.25, 44.35], [-84.5, 44.25], [-84.75, 44.35], [-85.0, 44.25], [-85.25, 44.35], [-85.32, 44.32], [-85.47, 43.97], [-85.82, 43.82], [-85.85, 43.75], [-85.82, 43.68], [-85.47, 43.53], [-85.25, 43.0], [-85.47, 42.47], [-85.82, 42.32], [-85.85, 42.25], [-85.75, 42.0], [-85.97, 41.47], [-86.5, 41.25], [-86.75, 41.35], [-87.0, 41.25], [-87.53, 41.47], [-87.75, 42.0], [-87.65, 42.25], [-87.75, 42.5], [-87.65, 42.75], [-87.75, 43.0], [-87.53, 43.53], [-87.18, 43.68], [-87.15, 43.75], [-87.25, 44.0], [-87.03, 44.53], [-86.68, 44.68], [-86.65, 44.75], [-86.75, 45.0], [-86.62, 45.3], [-86.75, 45.35], [-87.0, 45.25], [-87.25, 45.35], [-87.5, 45.25], [-88.03, 45.47], [-88.2, 45.88], [-88.37, 45.8], [-88.25, 45.5], [-88.47, 44.97], [-89.0, 44.75], [-89.25, 44.85], [-89.5, 44.75], [-89.75, 44.85], [-90.0, 44.75], [-90.25, 44.85], [-90.5, 44.75], [-91.03, 44.97], [-91.25, 45.5], [-91.15, 45.75], [-91.18, 45.82], [-91.25, 45.85], [-91.5, 45.75], [-92.03, 45.97]]]]}, "2012-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.03, 45.97], [-92.25, 46.5], [-92.03, 47.03], [-91.5, 47.25], [-91.25, 47.15], [-91.0, 47.25], [-90.75, 47.15], [-90.5, 47.25], [-90.25, 47.15], [-90.0, 47.25], [-89.75, 47.15], [-89.5, 47.25], [-89.25, 47.15], [-89.18, 47.18], [-89.03, 47.53], [-88.68, 47.68], [-88.53, 48.03], [-88.12, 48.2], [-88.18, 48.32], [-88.53, 48.47], [-88.68, 48.82], [-89.03, 48.97], [-89.25, 49.5], [-89.03, 50.03], [-88.5, 50.25], [-88.25, 50.15], [-88.0, 50.25], [-87.75, 50.15], [-87.5, 50.25], [-87.25, 50.15], [-87.0, 50.25], [-86.75, 50.15], [-86.5, 50.25], [-85.97, 50.03], [-85.82, 49.68], [-85.5, 49.54], [-85.0, 49.75], [-84.5, 49.54], [-84.0, 49.75], [-83.75, 49.65], [-83.5, 49.75], [-82.97, 49.53], [-82.82, 49.18], [-82.47, 49.03], [-82.32, 48.68], [-82.2, 48.62], [-82.03, 49.03], [-81.5, 49.25], [-81.25, 49.15], [-81.0, 49.25], [-80.75, 49.15], [-80.68, 49.18], [-80.53, 49.53], [-80.18, 49.68], [-80.03, 50.03], [-79.68, 50.18], [-79.53, 50.53], [-79.0, 50.75], [-78.75, 50.65], [-78.68, 50.68], [-78.53, 51.03], [-78.0, 51.25], [-77.75, 51.15], [-77.5, 51.25], [-77.25, 51.15], [-77.0, 51.25], [-76.47, 51.03], [-76.25, 50.5], [-76.37, 50.2], [-76.25, 50.15], [-76.0, 50.25], [-75.47, 50.03], [-75.25, 49.5], [-75.35, 49.25], [-75.25, 49.0], [-75.47, 48.47], [-75.82, 48.32], [-75.97, 47.97], [-76.5, 47.75], [-76.75, 47.85], [-76.82, 47.82], [-76.97, 47.47], [-77.5, 47.25], [-77.75, 47.35], [-77.82, 47.32], [-77.97, 46.97], [-78.5, 46.75], [-78.75, 46.85], [-79.0, 46.75], [-79.25, 46.85], [-79.32, 46.82], [-79.35, 46.75], [-79.25, 46.5], [-79.35, 46.25], [-79.25, 46.0], [-79.47, 45.47], [-79.82, 45.32], [-79.85, 45.25], [-79.75, 45.0], [-79.97, 44.47], [-80.5, 44.25], [-80.75, 44.35], [-80.82, 44.32], [-80.97, 43.97], [-81.32, 43.82], [-81.35, 43.75], [-81.25, 43.5], [-81.47, 42.97], [-82.0, 42.75], [-82.53, 42.97], [-82.68, 43.32], [-83.03, 43.47], [-83.18, 43.82], [-83.53, 43.97], [-83.68, 44.32], [-83.75, 44.35], [-84.0, 44.25], [-84.25, 44.35], [-84.5, 44.25], [-84.75, 44.35], [-85.0, 44.25], [-85.25, 44.35], [-85.32, 44.32], [-85.47, 43.97], [-85.82, 43.82], [-85.85, 43.75], [-85.82, 43.68], [-85.47, 43.53], [-85.25, 43.0], [-85.47, 42.47], [-85.82, 42.32], [-85.85, 42.25], [-85.75, 42.0], [-85.97, 41.47], [-86.5, 41.25], [-86.75, 41.35], [-87.0, 41.25], [-87.53, 41.47], [-87.75, 42.0], [-87.65, 42.25], [-87.75, 42.5], [-87.65, 42.75], [-87.75, 43.0], [-87.53, 43.53], [-87.18, 43.68], [-87.15, 43.75], [-87.25, 44.0], [-87.03, 44.53], [-86.68, 44.68], [-86.65, 44.75], [-86.75, 45.0], [-86.62, 45.3], [-86.75, 45.35], [-87.0, 45.25], [-87.25, 45.35], [-87.5, 45.25], [-88.03, 45.47], [-88.2, 45.88], [-88.37, 45.8], [-88.25, 45.5], [-88.47, 44.97], [-89.0, 44.75], [-89.25, 44.85], [-89.5, 44.75], [-89.75, 44.85], [-90.0, 44.75], [-90.25, 44.85], [-90.5, 44.75], [-91.03, 44.97], [-91.25, 45.5], [-91.15, 45.75], [-91.18, 45.82], [-91.25, 45.85], [-91.5, 45.75], [-92.03, 45.97]], [[-81.5, 47.75], [-81.8, 47.88], [-81.85, 47.75], [-81.82, 47.68], [-81.75, 47.65], [-81.5, 47.75]], [[-81.2, 47.62], [-81.15, 47.75], [-81.18, 47.82], [-81.25, 47.85], [-81.5, 47.75], [-81.2, 47.62]]]]}, "2012-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.03, 45.97], [-92.25, 46.5], [-92.03, 47.03], [-91.5, 47.25], [-91.25, 47.15], [-91.0, 47.25], [-90.75, 47.15], [-90.5, 47.25], [-90.25, 47.15], [-90.0, 47.25], [-89.75, 47.15], [-89.5, 47.25], [-89.25, 47.15], [-89.18, 47.18], [-89.03, 47.53], [-88.68, 47.68], [-88.53, 48.03], [-88.12, 48.2], [-88.18, 48.32], [-88.53, 48.47], [-88.68, 48.82], [-89.03, 48.97], [-89.25, 49.5], [-89.03, 50.03], [-88.5, 50.25], [-88.25, 50.15], [-88.0, 50.25], [-87.75, 50.15], [-87.5, 50.25], [-87.25, 50.15], [-87.0, 50.25], [-86.75, 50.15], [-86.5, 50.25], [-85.97, 50.03], [-85.82, 49.68], [-85.5, 49.54], [-85.0, 49.75], [-84.5, 49.54], [-84.0, 49.75], [-83.75, 49.65], [-83.5, 49.75], [-82.97, 49.53], [-82.82, 49.18], [-82.47, 49.03], [-82.32, 48.68], [-82.2, 48.62], [-82.03, 49.03], [-81.5, 49.25], [-81.25, 49.15], [-81.0, 49.25], [-80.75, 49.15], [-80.68, 49.18], [-80.53, 49.53], [-80.18, 49.68], [-80.03, 50.03], [-79.68, 50.18], [-79.53, 50.53], [-79.0, 50.75], [-78.75, 50.65], [-78.68, 50.68], [-78.53, 51.03], [-78.0, 51.25], [-77.75, 51.15], [-77.5, 51.25], [-77.25, 51.15], [-77.0, 51.25], [-76.47, 51.03], [-76.25, 50.5], [-76.37, 50.2], [-76.25, 50.15], [-76.0, 50.25], [-75.47, 50.03], [-75.25, 49.5], [-75.35, 49.25], [-75.25, 49.0], [-75.47, 48.47], [-75.82, 48.32], [-75.97, 47.97], [-76.5, 47.75], [-76.75, 47.85], [-76.82, 47.82], [-76.97, 47.47], [-77.5, 47.25], [-77.75, 47.35], [-77.82, 47.32], [-77.97, 46.97], [-78.5, 46.75], [-78.75, 46.85], [-79.0, 46.75], [-79.25, 46.85], [-79.32, 46.82], [-79.35, 46.75], [-79.25, 46.5], [-79.35, 46.25], [-79.25, 46.0], [-79.47, 45.47], [-79.82, 45.32], [-79.85, 45.25], [-79.75, 45.0], [-79.97, 44.47], [-80.5, 44.25], [-80.75, 44.35], [-80.82, 44.32], [-80.97, 43.97], [-81.32, 43.82], [-81.35, 43.75], [-81.25, 43.5], [-81.47, 42.97], [-82.0, 42.75], [-82.53, 42.97], [-82.68, 43.32], [-83.03, 43.47], [-83.18, 43.82], [-83.53, 43.97], [-83.68, 44.32], [-83.75, 44.35], [-84.0, 44.25], [-84.25, 44.35], [-84.5, 44.25], [-84.75, 44.35], [-85.0, 44.25], [-85.25, 44.35], [-85.32, 44.32], [-85.47, 43.97], [-85.82, 43.82], [-85.85, 43.75], [-85.82, 43.68], [-85.47, 43.53], [-85.25, 43.0], [-85.47, 42.47], [-85.82, 42.32], [-85.85, 42.25], [-85.75, 42.0], [-85.97, 41.47], [-86.5, 41.25], [-86.75, 41.35], [-87.0, 41.25], [-87.53, 41.47], [-87.75, 42.0], [-87.65, 42.25], [-87.75, 42.5], [-87.65, 42.75], [-87.75, 43.0], [-87.53, 43.53], [-87.18, 43.68], [-87.15, 43.75], [-87.25, 44.0], [-87.03, 44.53], [-86.68, 44.68], [-86.65, 44.75], [-86.75, 45.0], [-86.62, 45.3], [-86.75, 45.35], [-87.0, 45.25], [-87.25, 45.35], [-87.5, 45.25], [-88.03, 45.47], [-88.2, 45.88], [-88.37, 45.8], [-88.25, 45.5], [-88.47, 44.97], [-89.0, 44.75], [-89.25, 44.85], [-89.5, 44.75], [-89.75, 44.85], [-90.0, 44.75], [-90.25, 44.85], [-90.5, 44.75], [-91.03, 44.97], [-91.25, 45.5], [-91.15, 45.75], [-91.18, 45.82], [-91.25, 45.85], [-91.5, 45.75], [-92.03, 45.97]], [[-81.5, 47.75], [-81.8, 47.88], [-81.85, 47.75], [-81.82, 47.68], [-81.75, 47.65], [-81.5, 47.75]], [[-81.2, 47.62], [-81.15, 47.75], [-81.18, 47.82], [-81.25, 47.85], [-81.5, 47.75], [-81.2, 47.62]]]]}, "2012-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.75, 46.0], [-85.53, 46.53], [-85.0, 46.75], [-84.47, 46.53], [-84.25, 46.0], [-84.43, 45.57], [-84.0, 45.75], [-83.75, 45.65], [-83.5, 45.75], [-82.97, 45.53], [-82.75, 45.0], [-82.97, 44.47], [-83.5, 44.25], [-83.75, 44.35], [-84.0, 44.25], [-84.53, 44.47], [-84.75, 45.0], [-84.57, 45.43], [-85.0, 45.25], [-85.53, 45.47], [-85.75, 46.0]]], [[[-82.25, 47.65], [-82.0, 47.75], [-81.75, 47.65], [-81.5, 47.75], [-82.03, 47.97], [-82.25, 48.5], [-82.03, 49.03], [-81.5, 49.25], [-81.25, 49.15], [-81.0, 49.25], [-80.75, 49.15], [-80.68, 49.18], [-80.53, 49.53], [-80.18, 49.68], [-80.03, 50.03], [-79.68, 50.18], [-79.53, 50.53], [-79.0, 50.75], [-78.75, 50.65], [-78.68, 50.68], [-78.53, 51.03], [-78.0, 51.25], [-77.75, 51.15], [-77.5, 51.25], [-77.25, 51.15], [-77.0, 51.25], [-76.47, 51.03], [-76.25, 50.5], [-76.37, 50.2], [-76.25, 50.15], [-76.0, 50.25], [-75.47, 50.03], [-75.25, 49.5], [-75.35, 49.25], [-75.25, 49.0], [-75.47, 48.47], [-75.82, 48.32], [-75.97, 47.97], [-76.5, 47.75], [-76.75, 47.85], [-76.82, 47.82], [-76.97, 47.47], [-77.5, 47.25], [-77.75, 47.35], [-77.82, 47.32], [-77.97, 46.97], [-78.5, 46.75], [-78.75, 46.85], [-79.0, 46.75], [-79.25, 46.85], [-79.32, 46.82], [-79.35, 46.75], [-79.25, 46.5], [-79.35, 46.25], [-79.25, 46.0], [-79.47, 45.47], [-79.82, 45.32], [-79.85, 45.25], [-79.75, 45.0], [-79.97, 44.47], [-80.5, 44.25], [-80.75, 44.35], [-81.0, 44.25], [-81.53, 44.47], [-81.75, 45.0], [-81.65, 45.25], [-81.68, 45.32], [-82.03, 45.47], [-82.18, 45.82], [-82.25, 45.85], [-82.5, 45.75], [-82.75, 45.85], [-83.0, 45.75], [-83.53, 45.97], [-83.75, 46.5], [-83.53, 47.03], [-83.18, 47.18], [-83.03, 47.53], [-82.5, 47.75], [-82.25, 47.65]], [[-81.2, 47.62], [-81.15, 47.75], [-81.18, 47.82], [-81.25, 47.85], [-81.5, 47.75], [-81.2, 47.62]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.454584194338622}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.927026028326168}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.19992164166655, 22.603879721940302, 22.32154418479763, 22.818615701540978, 22.9924236454234, 21.242861565566386]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.57763577009831, 23.842033666059194, 26.29241459869462, 26.424885658850656, 26.335793031491278, 23.41634108420999]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.180207327012153, 3.3956720412007426, 3.853041685095446, 5.18434586057592, 5.443943384088648, 5.184724531427879]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.5309483794260927, 3.712340338964623, 5.354761089377519, 7.864676951840067, 9.454584194338622, 6.674192184796027]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2275683866452198, 1.3278396018916372, 1.4786822225020946, 1.7978149397053649, 1.8010817657324936, 1.558292995277286]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2833573887821415, 1.5222740050315302, 1.9837019858473515, 2.350384879036791, 2.4128868618155384, 1.7641663849149292]}}