{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:55.639702", "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-Nov-02_to_2025-Nov-06_253.5_39.0"}, "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": 2025110001206}, "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": "November 02 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 06 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": 87967.6145949673}, "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": ["United States"]}, "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": 39.0}, "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": 253.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "253.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 254.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-105.32, 40.68], [-104.97, 40.53], [-104.75, 40.0], [-104.96, 39.5], [-104.75, 39.0], [-104.97, 38.47], [-105.5, 38.25], [-105.75, 38.35], [-105.82, 38.32], [-105.85, 38.25], [-105.75, 38.0], [-105.85, 37.75], [-105.75, 37.5], [-105.97, 36.97], [-106.5, 36.75], [-106.75, 36.85], [-107.0, 36.75], [-107.25, 36.85], [-107.5, 36.75], [-107.75, 36.85], [-108.0, 36.75], [-108.53, 36.97], [-108.75, 37.5], [-108.65, 37.75], [-108.75, 38.0], [-108.53, 38.53], [-108.12, 38.7], [-108.2, 38.88], [-108.5, 38.75], [-109.03, 38.97], [-109.25, 39.5], [-109.15, 39.75], [-109.25, 40.0], [-109.03, 40.53], [-108.68, 40.68], [-108.65, 40.75], [-108.75, 41.0], [-108.53, 41.53], [-108.12, 41.7], [-108.25, 42.0], [-108.03, 42.53], [-107.5, 42.75], [-107.25, 42.65], [-107.0, 42.75], [-106.75, 42.65], [-106.5, 42.75], [-106.25, 42.65], [-106.0, 42.75], [-105.47, 42.53], [-105.25, 42.0], [-105.46, 41.5], [-105.25, 41.0], [-105.35, 40.75], [-105.32, 40.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.03, 38.53], [-107.62, 38.7], [-107.75, 39.0], [-107.53, 39.53], [-107.18, 39.68], [-107.03, 40.03], [-106.62, 40.2], [-106.75, 40.5], [-106.53, 41.03], [-106.0, 41.25], [-105.47, 41.03], [-105.25, 40.5], [-105.46000000000001, 40.0], [-105.32, 39.68], [-104.97, 39.53], [-104.75, 39.0], [-104.97, 38.47], [-105.5, 38.25], [-106.0, 38.46], [-106.37, 38.3], [-106.32, 38.18], [-105.97, 38.03], [-105.75, 37.5], [-105.97, 36.97], [-106.5, 36.75], [-106.75, 36.85], [-107.0, 36.75], [-107.25, 36.85], [-107.5, 36.75], [-107.75, 36.85], [-108.0, 36.75], [-108.53, 36.97], [-108.75, 37.5], [-108.53, 38.03], [-108.18, 38.18], [-108.03, 38.53]]]]}, "2025-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.75, 38.0], [-108.53, 38.53], [-108.0, 38.75], [-107.75, 38.65], [-107.62, 38.7], [-107.75, 39.0], [-107.53, 39.53], [-107.18, 39.68], [-107.03, 40.03], [-106.62, 40.2], [-106.75, 40.5], [-106.53, 41.03], [-106.0, 41.25], [-105.47, 41.03], [-105.25, 40.5], [-105.46000000000001, 40.0], [-105.32, 39.68], [-104.97, 39.53], [-104.75, 39.0], [-104.97, 38.47], [-105.5, 38.25], [-106.0, 38.46], [-106.37, 38.3], [-106.32, 38.18], [-105.97, 38.03], [-105.75, 37.5], [-105.97, 36.97], [-106.5, 36.75], [-106.75, 36.85], [-107.0, 36.75], [-107.25, 36.85], [-107.5, 36.75], [-107.75, 36.85], [-108.0, 36.75], [-108.53, 36.97], [-108.75, 37.5], [-108.65, 37.75], [-108.75, 38.0]]]]}, "2025-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.25, 40.0], [-109.03, 40.53], [-108.68, 40.68], [-108.65, 40.75], [-108.75, 41.0], [-108.53, 41.53], [-108.12, 41.7], [-108.25, 42.0], [-108.03, 42.53], [-107.5, 42.75], [-107.25, 42.65], [-107.0, 42.75], [-106.75, 42.65], [-106.5, 42.75], [-106.25, 42.65], [-106.0, 42.75], [-105.47, 42.53], [-105.25, 42.0], 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"evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.9271954854329465, 2.928597239958947, 5.2001743969617, 4.993252619990642, 5.651186738190859]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.1173199971516965, 5.1796864827474, 9.681142425537132, 9.703543599446618, 11.256644185384118]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.894207845344724, 5.979017085587066, 6.5057349854682105, 6.480244659653083, 7.177089415468223]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.8144118782358305, 6.708320356073102, 8.020308113762269, 7.809408234961495, 8.808149699745343]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.342606172974518, 1.366403225289486, 1.3503908845452832, 1.300465290833434, 1.444979170341446]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6137342472542864, 1.571647748966942, 1.6041275817495457, 1.4840966728815883, 1.6201086325225271]}}