{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:40.671688", "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-Jul-17_to_2025-Jul-23_225.5_60.0"}, "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": 2025070002371}, "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 17 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 23 2025"}, "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": 143988.3273127242}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 60.0}, "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": 225.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "225.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 213.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 227.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-144.03, 59.97], [-144.25, 60.5], [-144.15, 60.75], [-144.25, 61.0], [-144.03, 61.53], [-143.68, 61.68], [-143.54, 62.0], [-143.68, 62.32], [-144.0, 62.46], [-144.5, 62.25], [-144.75, 62.35], [-145.0, 62.25], [-145.25, 62.35], [-145.32, 62.32], [-145.47, 61.97], [-146.0, 61.75], [-146.53, 61.97], [-146.68, 62.32], [-147.03, 62.47], [-147.25, 63.0], [-147.15, 63.25], [-147.18, 63.32], [-147.53, 63.47], [-147.75, 64.0], [-147.53, 64.53], [-147.0, 64.75], [-146.75, 64.65], [-146.5, 64.75], [-146.25, 64.65], [-146.0, 64.75], [-145.75, 64.65], [-145.5, 64.75], [-145.25, 64.65], [-145.0, 64.75], [-144.47, 64.53], [-144.32, 64.18], [-144.25, 64.15], [-144.18, 64.18], [-144.03, 64.53], [-143.5, 64.75], [-143.25, 64.65], [-143.0, 64.75], [-142.75, 64.65], [-142.5, 64.75], [-142.25, 64.65], [-142.0, 64.75], [-141.47, 64.53], [-141.32, 64.18], [-141.25, 64.15], [-141.0, 64.25], [-140.47, 64.03], [-140.32, 63.68], [-140.25, 63.65], [-140.0, 63.75], [-139.75, 63.65], [-139.5, 63.75], [-139.25, 63.65], [-139.0, 63.75], [-138.75, 63.65], [-138.5, 63.75], [-137.97, 63.53], [-137.82, 63.18], [-137.47, 63.03], [-137.32, 62.68], [-137.25, 62.65], [-137.0, 62.75], [-136.75, 62.65], [-136.5, 62.75], [-135.97, 62.53], [-135.75, 62.0], [-135.85, 61.75], [-135.82, 61.68], [-135.47, 61.53], [-135.32, 61.18], [-135.2, 61.13], [-135.03, 61.53], [-134.5, 61.75], [-133.97, 61.53], [-133.82, 61.18], [-133.5, 61.04], [-133.0, 61.25], [-132.47, 61.03], [-132.25, 60.5], [-132.46, 60.0], [-132.25, 59.5], [-132.47, 58.97], [-133.0, 58.75], [-133.25, 58.85], [-133.5, 58.75], [-133.75, 58.85], [-134.0, 58.75], [-134.53, 58.97], [-134.68, 59.32], [-134.75, 59.35], [-135.0, 59.25], [-135.25, 59.35], [-135.5, 59.25], [-135.75, 59.35], [-136.0, 59.25], [-136.25, 59.35], [-136.5, 59.25], [-137.03, 59.47], [-137.18, 59.82], [-137.25, 59.85], [-137.5, 59.75], [-137.75, 59.85], [-138.0, 59.75], [-138.53, 59.97], [-138.75, 60.5], [-138.65, 60.75], [-138.68, 60.82], [-138.75, 60.85], [-139.0, 60.75], [-139.25, 60.85], [-139.5, 60.75], [-139.75, 60.85], [-140.0, 60.75], [-140.25, 60.85], [-140.5, 60.75], [-140.8, 60.88], [-140.97, 60.47], [-141.32, 60.32], [-141.47, 59.97], [-142.0, 59.75], [-142.25, 59.85], [-142.5, 59.75], [-143.0, 59.96], [-143.5, 59.75], [-144.03, 59.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-145.03, 64.03], [-144.5, 64.25], [-143.97, 64.03], [-143.75, 63.5], [-143.97, 62.97], [-144.5, 62.75], [-145.03, 62.97], [-145.25, 63.5], [-145.03, 64.03]]]]}, "2025-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-146.53, 63.47], [-146.75, 64.0], [-146.53, 64.53], [-146.0, 64.75], [-145.75, 64.65], [-145.5, 64.75], [-145.25, 64.65], [-145.0, 64.75], [-144.47, 64.53], [-144.32, 64.18], [-144.25, 64.15], [-144.0, 64.25], [-143.47, 64.03], [-143.32, 63.68], [-143.25, 63.65], [-143.0, 63.75], [-142.75, 63.65], [-142.5, 63.75], [-142.25, 63.65], [-142.0, 63.75], [-141.75, 63.65], [-141.5, 63.75], [-141.25, 63.65], [-141.0, 63.75], [-140.75, 63.65], [-140.5, 63.75], [-140.25, 63.65], [-140.0, 63.75], [-139.75, 63.65], [-139.5, 63.75], [-139.25, 63.65], [-139.0, 63.75], [-138.47, 63.53], [-138.32, 63.18], [-138.25, 63.15], [-138.0, 63.25], [-137.47, 63.03], [-137.25, 62.5], [-137.35, 62.25], [-137.25, 62.0], [-137.35, 61.75], [-137.25, 61.5], [-137.47, 60.97], [-138.0, 60.75], [-138.25, 60.85], [-138.5, 60.75], [-138.75, 60.85], [-139.0, 60.75], [-139.25, 60.85], [-139.5, 60.75], [-140.03, 60.97], [-140.18, 61.32], [-140.53, 61.47], [-140.68, 61.82], [-140.75, 61.85], [-141.0, 61.75], [-141.53, 61.97], [-141.68, 62.32], [-141.75, 62.35], [-142.0, 62.25], [-142.25, 62.35], [-142.5, 62.25], [-142.75, 62.35], [-143.0, 62.25], [-143.25, 62.35], [-143.5, 62.25], [-144.0, 62.46], [-144.5, 62.25], [-145.03, 62.47], [-145.2, 62.88], [-145.5, 62.75], [-146.03, 62.97], [-146.18, 63.32], [-146.53, 63.47]]]]}, "2025-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.53, 63.47], [-147.75, 64.0], [-147.53, 64.53], [-147.0, 64.75], [-146.75, 64.65], [-146.5, 64.75], [-146.25, 64.65], [-146.0, 64.75], [-145.75, 64.65], [-145.5, 64.75], [-145.25, 64.65], [-145.0, 64.75], [-144.47, 64.53], [-144.32, 64.18], [-144.25, 64.15], [-144.18, 64.18], [-144.03, 64.53], [-143.5, 64.75], [-143.25, 64.65], [-143.0, 64.75], [-142.75, 64.65], [-142.5, 64.75], [-142.25, 64.65], [-142.0, 64.75], [-141.47, 64.53], [-141.32, 64.18], [-141.25, 64.15], [-141.0, 64.25], [-140.47, 64.03], [-140.32, 63.68], [-140.25, 63.65], [-140.0, 63.75], [-139.75, 63.65], [-139.5, 63.75], [-139.25, 63.65], [-139.0, 63.75], [-138.75, 63.65], [-138.5, 63.75], [-137.97, 63.53], [-137.82, 63.18], [-137.47, 63.03], [-137.32, 62.68], [-137.25, 62.65], [-137.0, 62.75], [-136.75, 62.65], [-136.5, 62.75], [-135.97, 62.53], [-135.75, 62.0], [-135.85, 61.75], [-135.82, 61.68], [-135.47, 61.53], [-135.32, 61.18], [-135.2, 61.13], [-135.03, 61.53], [-134.5, 61.75], [-133.97, 61.53], [-133.82, 61.18], [-133.5, 61.04], [-133.0, 61.25], [-132.47, 61.03], [-132.25, 60.5], [-132.47, 59.97], [-132.82, 59.82], [-132.85, 59.75], [-132.75, 59.5], [-132.97, 58.97], [-133.5, 58.75], [-133.75, 58.85], [-134.0, 58.75], [-134.53, 58.97], [-134.68, 59.32], [-135.03, 59.47], [-135.2, 59.88], [-135.32, 59.82], [-135.47, 59.47], [-136.0, 59.25], [-136.53, 59.47], [-136.68, 59.82], [-137.03, 59.97], [-137.18, 60.32], [-137.25, 60.35], [-137.5, 60.25], [-137.75, 60.35], [-138.0, 60.25], [-138.53, 60.47], [-138.68, 60.82], [-138.75, 60.85], [-139.0, 60.75], [-139.25, 60.85], [-139.5, 60.75], [-139.75, 60.85], [-140.0, 60.75], [-140.25, 60.85], [-140.5, 60.75], [-141.03, 60.97], [-141.18, 61.32], [-141.25, 61.35], [-141.5, 61.25], [-141.75, 61.35], [-142.0, 61.25], [-142.3, 61.38], [-142.47, 60.97], [-143.0, 60.75], [-143.53, 60.97], [-143.75, 61.5], [-143.54, 62.0], [-143.68, 62.32], [-144.0, 62.46], [-144.5, 62.25], [-144.75, 62.35], [-145.0, 62.25], [-145.25, 62.35], [-145.32, 62.32], [-145.47, 61.97], [-146.0, 61.75], [-146.53, 61.97], [-146.68, 62.32], [-147.03, 62.47], [-147.25, 63.0], [-147.15, 63.25], [-147.18, 63.32], [-147.53, 63.47]]]]}, "2025-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.53, 63.47], [-147.75, 64.0], [-147.53, 64.53], [-147.0, 64.75], [-146.75, 64.65], [-146.5, 64.75], [-146.25, 64.65], [-146.0, 64.75], [-145.75, 64.65], [-145.5, 64.75], [-145.25, 64.65], [-145.0, 64.75], [-144.47, 64.53], [-144.32, 64.18], [-144.25, 64.15], [-144.18, 64.18], [-144.03, 64.53], [-143.5, 64.75], [-143.25, 64.65], [-143.0, 64.75], [-142.75, 64.65], [-142.5, 64.75], [-142.25, 64.65], [-142.0, 64.75], [-141.47, 64.53], [-141.32, 64.18], [-141.25, 64.15], [-141.0, 64.25], [-140.47, 64.03], [-140.32, 63.68], [-140.25, 63.65], [-140.0, 63.75], [-139.75, 63.65], [-139.5, 63.75], [-139.25, 63.65], [-139.0, 63.75], [-138.75, 63.65], [-138.5, 63.75], [-137.97, 63.53], [-137.82, 63.18], [-137.47, 63.03], [-137.32, 62.68], [-137.25, 62.65], [-137.0, 62.75], [-136.75, 62.65], [-136.5, 62.75], [-135.97, 62.53], [-135.75, 62.0], [-135.85, 61.75], [-135.82, 61.68], [-135.47, 61.53], [-135.32, 61.18], [-135.2, 61.13], [-135.03, 61.53], [-134.5, 61.75], [-133.97, 61.53], [-133.82, 61.18], [-133.5, 61.04], [-133.0, 61.25], [-132.47, 61.03], [-132.25, 60.5], [-132.46, 60.0], [-132.25, 59.5], [-132.47, 58.97], [-133.0, 58.75], [-133.25, 58.85], [-133.5, 58.75], [-133.75, 58.85], [-134.0, 58.75], [-134.53, 58.97], [-134.68, 59.32], [-134.75, 59.35], [-135.0, 59.25], [-135.25, 59.35], [-135.5, 59.25], [-135.75, 59.35], [-136.0, 59.25], [-136.25, 59.35], [-136.5, 59.25], [-137.03, 59.47], [-137.18, 59.82], [-137.25, 59.85], [-137.5, 59.75], [-137.75, 59.85], [-138.0, 59.75], [-138.53, 59.97], [-138.75, 60.5], [-138.65, 60.75], [-138.68, 60.82], [-138.75, 60.85], [-139.0, 60.75], [-139.25, 60.85], [-139.5, 60.75], [-139.75, 60.85], [-140.0, 60.75], [-140.25, 60.85], [-140.5, 60.75], [-140.8, 60.88], [-140.97, 60.47], [-141.32, 60.32], [-141.47, 59.97], [-142.0, 59.75], [-142.25, 59.85], [-142.5, 59.75], [-143.03, 59.97], [-143.18, 60.32], [-143.25, 60.35], [-143.5, 60.25], [-144.03, 60.47], [-144.25, 61.0], [-144.03, 61.53], [-143.68, 61.68], [-143.54, 62.0], [-143.68, 62.32], [-144.0, 62.46], [-144.5, 62.25], [-144.75, 62.35], [-145.0, 62.25], [-145.25, 62.35], [-145.32, 62.32], [-145.47, 61.97], [-146.0, 61.75], [-146.53, 61.97], [-146.68, 62.32], [-147.03, 62.47], [-147.25, 63.0], [-147.15, 63.25], [-147.18, 63.32], [-147.53, 63.47]]]]}, "2025-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.53, 63.47], [-147.75, 64.0], [-147.53, 64.53], [-147.0, 64.75], [-146.75, 64.65], [-146.5, 64.75], [-145.97, 64.53], [-145.82, 64.18], [-145.75, 64.15], [-145.5, 64.25], [-145.0, 64.04], [-144.5, 64.25], [-144.25, 64.15], [-144.18, 64.18], [-144.03, 64.53], [-143.5, 64.75], [-143.25, 64.65], [-143.0, 64.75], [-142.75, 64.65], [-142.5, 64.75], [-142.25, 64.65], [-142.0, 64.75], [-141.47, 64.53], [-141.32, 64.18], [-141.25, 64.15], [-141.0, 64.25], [-140.47, 64.03], [-140.32, 63.68], [-139.97, 63.53], [-139.82, 63.18], [-139.75, 63.15], [-139.5, 63.25], [-139.25, 63.15], [-139.18, 63.18], [-139.03, 63.53], [-138.5, 63.75], [-137.97, 63.53], [-137.75, 63.0], [-137.85, 62.75], [-137.82, 62.68], [-137.75, 62.65], [-137.5, 62.75], [-137.25, 62.65], [-137.0, 62.75], [-136.75, 62.65], [-136.5, 62.75], [-135.97, 62.53], [-135.75, 62.0], [-135.85, 61.75], [-135.82, 61.68], [-135.47, 61.53], [-135.32, 61.18], [-135.2, 61.13], [-135.03, 61.53], [-134.5, 61.75], [-133.97, 61.53], [-133.82, 61.18], [-133.5, 61.04], [-133.0, 61.25], [-132.47, 61.03], [-132.25, 60.5], [-132.46, 60.0], [-132.25, 59.5], [-132.47, 58.97], [-133.0, 58.75], [-133.25, 58.85], [-133.5, 58.75], [-133.75, 58.85], [-134.0, 58.75], [-134.53, 58.97], [-134.68, 59.32], [-134.75, 59.35], [-135.0, 59.25], [-135.25, 59.35], [-135.5, 59.25], [-135.75, 59.35], [-136.0, 59.25], [-136.25, 59.35], [-136.5, 59.25], [-137.03, 59.47], [-137.18, 59.82], [-137.25, 59.85], [-137.5, 59.75], [-137.75, 59.85], [-138.0, 59.75], [-138.53, 59.97], [-138.75, 60.5], [-138.65, 60.75], [-138.68, 60.82], [-138.75, 60.85], [-139.0, 60.75], [-139.25, 60.85], [-139.5, 60.75], [-139.75, 60.85], [-140.0, 60.75], [-140.25, 60.85], [-140.5, 60.75], [-140.8, 60.88], [-140.97, 60.47], [-141.32, 60.32], [-141.47, 59.97], [-142.0, 59.75], [-142.25, 59.85], [-142.5, 59.75], [-143.0, 59.96], [-143.5, 59.75], [-144.03, 59.97], [-144.25, 60.5], [-144.15, 60.75], [-144.25, 61.0], [-144.03, 61.53], [-143.68, 61.68], [-143.54, 62.0], [-143.68, 62.32], [-144.0, 62.46], [-144.5, 62.25], [-144.75, 62.35], [-145.0, 62.25], [-145.25, 62.35], [-145.32, 62.32], [-145.47, 61.97], [-146.0, 61.75], [-146.53, 61.97], [-146.68, 62.32], [-147.03, 62.47], [-147.25, 63.0], [-147.15, 63.25], [-147.18, 63.32], [-147.53, 63.47]]]]}, "2025-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-138.53, 61.53], [-138.0, 61.75], [-137.75, 61.65], [-137.5, 61.75], [-137.25, 61.65], [-137.18, 61.68], [-137.03, 62.03], [-136.5, 62.25], [-135.97, 62.03], [-135.82, 61.68], [-135.47, 61.53], [-135.32, 61.18], [-135.2, 61.13], [-135.03, 61.53], [-134.5, 61.75], [-133.97, 61.53], [-133.82, 61.18], [-133.5, 61.04], [-133.0, 61.25], [-132.47, 61.03], [-132.25, 60.5], [-132.46, 60.0], [-132.25, 59.5], [-132.47, 58.97], [-133.0, 58.75], [-133.25, 58.85], [-133.5, 58.75], [-133.75, 58.85], [-134.0, 58.75], [-134.53, 58.97], [-134.68, 59.32], [-134.75, 59.35], [-135.0, 59.25], [-135.25, 59.35], [-135.5, 59.25], [-135.75, 59.35], [-136.0, 59.25], [-136.25, 59.35], [-136.5, 59.25], [-137.03, 59.47], [-137.18, 59.82], [-137.25, 59.85], [-137.5, 59.75], [-137.75, 59.85], [-138.0, 59.75], [-138.53, 59.97], [-138.75, 60.5], [-138.65, 60.75], [-138.75, 61.0], [-138.53, 61.53]]], [[[-144.03, 61.53], [-143.5, 61.75], [-143.25, 61.65], [-143.18, 61.68], [-143.03, 62.03], [-142.5, 62.25], [-142.25, 62.15], [-142.0, 62.25], [-141.75, 62.15], [-141.5, 62.25], [-140.97, 62.03], [-140.75, 61.5], [-140.85, 61.25], [-140.75, 61.0], [-140.97, 60.47], [-141.32, 60.32], [-141.47, 59.97], [-142.0, 59.75], [-142.25, 59.85], [-142.5, 59.75], [-143.0, 59.96], [-143.5, 59.75], [-144.03, 59.97], [-144.25, 60.5], [-144.15, 60.75], [-144.25, 61.0], [-144.03, 61.53]]]]}, "2025-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-144.03, 61.03], [-143.5, 61.25], [-142.97, 61.03], [-142.75, 60.5], [-142.97, 59.97], [-143.5, 59.75], [-144.03, 59.97], [-144.25, 60.5], [-144.03, 61.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.865915938390913}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.817649653077952}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.389705912272177, 16.840217343725385, 16.130726366082342, 15.52072758058307, 15.2883125305176, 15.066194359031954, 6.781854248046898]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.389705912272177, 19.45555775960287, 20.04139099121096, 20.283156331380212, 18.9253974914551, 19.002654012044275, 6.781854248046898]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.8686529898854474, 3.162924719241356, 3.5690362524792203, 3.7370487930680554, 3.8545803538897987, 5.136805360906664, 2.2027531979933315]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.8686529898854474, 3.742569442925287, 4.585177288198906, 5.11403551536506, 6.192677836937264, 6.865915938390913, 2.2027531979933315]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.237699801998505, 1.3578534382239265, 1.560843939795057, 1.6500241734150376, 1.6972560922931772, 2.2763159737398904, 1.52114783910555]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.237699801998505, 1.6657552981046717, 1.9672542671140318, 2.0707510451250357, 2.9545371711265913, 2.926065105804402, 1.52114783910555]}}