{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:01.723490", "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": "2026-Mar-03_to_2026-Mar-07_265.0_45.0"}, "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": 2026030001143}, "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": "March 03 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 07 2026"}, "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": 137697.53585213397}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "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": 45.0}, "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": 265.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "265.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 261.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 270.75}, "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": 46.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.75, 45.0], [-98.53, 45.53], [-98.18, 45.68], [-98.15, 45.75], [-98.25, 46.0], [-98.03, 46.53], [-97.5, 46.75], [-97.25, 46.65], [-97.18, 46.68], [-97.03, 47.03], [-96.5, 47.25], [-96.25, 47.15], [-96.0, 47.25], [-95.75, 47.15], [-95.5, 47.25], [-95.25, 47.15], [-95.0, 47.25], [-94.47, 47.03], [-94.32, 46.68], [-94.25, 46.65], [-94.0, 46.75], [-93.75, 46.65], [-93.5, 46.75], [-92.97, 46.53], [-92.82, 46.18], [-92.75, 46.15], [-92.5, 46.25], [-92.25, 46.15], [-92.0, 46.25], [-91.75, 46.15], [-91.5, 46.25], [-91.25, 46.15], [-91.0, 46.25], [-90.75, 46.15], [-90.5, 46.25], [-89.97, 46.03], [-89.82, 45.68], [-89.75, 45.65], [-89.5, 45.75], [-88.97, 45.53], [-88.75, 45.0], [-88.97, 44.47], [-89.5, 44.25], [-89.75, 44.35], [-90.0, 44.25], [-90.25, 44.35], [-90.5, 44.25], [-90.75, 44.35], [-91.0, 44.25], [-91.25, 44.35], [-91.32, 44.32], [-91.47, 43.97], [-92.0, 43.75], [-92.25, 43.85], [-92.5, 43.75], [-93.03, 43.97], [-93.18, 44.32], [-93.25, 44.35], [-93.5, 44.25], [-93.75, 44.35], [-94.0, 44.25], [-94.25, 44.35], [-94.32, 44.32], [-94.47, 43.97], [-95.0, 43.75], [-95.25, 43.85], [-95.5, 43.75], [-95.75, 43.85], [-96.0, 43.75], [-96.25, 43.85], [-96.5, 43.75], [-97.0, 43.96], [-97.5, 43.75], [-98.03, 43.97], [-98.18, 44.32], [-98.53, 44.47], [-98.75, 45.0]]]]}, "2026-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.75, 45.0], [-98.53, 45.53], [-98.18, 45.68], [-98.15, 45.75], [-98.25, 46.0], [-98.03, 46.53], [-97.5, 46.75], [-97.25, 46.65], [-97.18, 46.68], [-97.03, 47.03], [-96.5, 47.25], [-96.25, 47.15], [-96.0, 47.25], [-95.75, 47.15], [-95.5, 47.25], [-95.25, 47.15], [-95.0, 47.25], [-94.47, 47.03], [-94.32, 46.68], [-94.25, 46.65], [-94.0, 46.75], [-93.75, 46.65], [-93.5, 46.75], [-92.97, 46.53], [-92.82, 46.18], [-92.75, 46.15], [-92.5, 46.25], [-92.25, 46.15], [-92.0, 46.25], [-91.75, 46.15], [-91.5, 46.25], [-91.25, 46.15], [-91.0, 46.25], [-90.75, 46.15], [-90.5, 46.25], [-89.97, 46.03], [-89.82, 45.68], [-89.75, 45.65], [-89.5, 45.75], [-88.97, 45.53], [-88.75, 45.0], [-88.97, 44.47], [-89.5, 44.25], [-89.75, 44.35], [-90.0, 44.25], [-90.25, 44.35], [-90.5, 44.25], [-90.75, 44.35], [-90.87, 44.3], [-90.75, 44.0], [-90.97, 43.47], [-91.5, 43.25], [-92.03, 43.47], [-92.18, 43.82], [-92.25, 43.85], [-92.5, 43.75], [-93.03, 43.97], [-93.18, 44.32], [-93.25, 44.35], [-93.5, 44.25], [-93.75, 44.35], [-94.0, 44.25], [-94.25, 44.35], [-94.32, 44.32], [-94.47, 43.97], [-94.82, 43.82], [-94.97, 43.47], [-95.5, 43.25], [-96.03, 43.47], [-96.18, 43.82], [-96.25, 43.85], [-96.5, 43.75], [-97.0, 43.96], [-97.5, 43.75], [-98.03, 43.97], [-98.18, 44.32], [-98.53, 44.47], [-98.75, 45.0]]]]}, "2026-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.75, 45.0], [-98.53, 45.53], [-98.18, 45.68], [-98.15, 45.75], [-98.25, 46.0], [-98.03, 46.53], [-97.5, 46.75], [-97.25, 46.65], [-97.18, 46.68], [-97.03, 47.03], [-96.5, 47.25], [-96.25, 47.15], [-96.0, 47.25], [-95.75, 47.15], [-95.5, 47.25], [-95.25, 47.15], [-95.0, 47.25], [-94.47, 47.03], [-94.32, 46.68], [-94.25, 46.65], [-94.0, 46.75], [-93.75, 46.65], [-93.5, 46.75], [-92.97, 46.53], [-92.82, 46.18], [-92.75, 46.15], [-92.5, 46.25], [-92.25, 46.15], [-92.0, 46.25], [-91.75, 46.15], [-91.5, 46.25], [-91.25, 46.15], [-91.0, 46.25], [-90.75, 46.15], [-90.5, 46.25], [-89.97, 46.03], [-89.82, 45.68], [-89.75, 45.65], [-89.5, 45.75], [-88.97, 45.53], [-88.75, 45.0], [-88.97, 44.47], [-89.5, 44.25], [-89.75, 44.35], [-90.0, 44.25], [-90.25, 44.35], [-90.5, 44.25], [-90.75, 44.35], [-90.87, 44.3], [-90.82, 44.18], [-90.47, 44.03], [-90.25, 43.5], [-90.35, 43.25], [-90.32, 43.18], [-89.97, 43.03], [-89.75, 42.5], [-89.97, 41.97], [-90.5, 41.75], [-90.75, 41.85], [-90.82, 41.82], [-90.97, 41.47], [-91.5, 41.25], [-92.03, 41.47], [-92.25, 42.0], [-92.15, 42.25], [-92.25, 42.5], [-92.15, 42.75], [-92.25, 43.0], [-92.15, 43.25], [-92.25, 43.5], [-92.15, 43.75], [-92.18, 43.82], [-92.25, 43.85], [-92.5, 43.75], [-93.03, 43.97], [-93.18, 44.32], [-93.25, 44.35], [-93.5, 44.25], [-93.75, 44.35], [-94.0, 44.25], [-94.25, 44.35], [-94.32, 44.32], [-94.47, 43.97], [-94.82, 43.82], [-94.97, 43.47], [-95.5, 43.25], [-96.03, 43.47], [-96.18, 43.82], [-96.25, 43.85], [-96.5, 43.75], [-97.0, 43.96], [-97.5, 43.75], [-98.03, 43.97], [-98.18, 44.32], [-98.53, 44.47], [-98.75, 45.0]]]]}, "2026-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.53, 46.03], [-96.18, 46.18], [-96.15, 46.25], [-96.25, 46.5], [-96.03, 47.03], [-95.5, 47.25], [-95.25, 47.15], [-95.0, 47.25], [-94.47, 47.03], [-94.32, 46.68], [-94.25, 46.65], [-94.0, 46.75], [-93.75, 46.65], [-93.5, 46.75], [-92.97, 46.53], [-92.82, 46.18], [-92.75, 46.15], [-92.5, 46.25], [-92.25, 46.15], [-92.0, 46.25], [-91.75, 46.15], [-91.5, 46.25], [-91.25, 46.15], [-91.0, 46.25], [-90.75, 46.15], [-90.5, 46.25], [-89.97, 46.03], [-89.82, 45.68], [-89.47, 45.53], [-89.25, 45.0], [-89.47, 44.47], [-90.0, 44.25], [-90.25, 44.35], [-90.5, 44.25], [-90.75, 44.35], [-90.87, 44.3], [-90.82, 44.18], [-90.47, 44.03], [-90.25, 43.5], [-90.35, 43.25], [-90.32, 43.18], [-89.97, 43.03], [-89.75, 42.5], [-89.97, 41.97], [-90.5, 41.75], [-90.75, 41.85], [-90.82, 41.82], [-90.97, 41.47], [-91.5, 41.25], [-92.03, 41.47], [-92.25, 42.0], [-92.15, 42.25], [-92.25, 42.5], [-92.15, 42.75], [-92.25, 43.0], [-92.15, 43.25], [-92.25, 43.5], [-92.15, 43.75], [-92.18, 43.82], [-92.25, 43.85], [-92.5, 43.75], [-93.03, 43.97], [-93.18, 44.32], [-93.25, 44.35], [-93.5, 44.25], [-93.75, 44.35], [-94.0, 44.25], [-94.25, 44.35], [-94.32, 44.32], [-94.47, 43.97], [-94.82, 43.82], [-94.97, 43.47], [-95.5, 43.25], [-96.03, 43.47], [-96.25, 44.0], [-96.15, 44.25], [-96.18, 44.32], [-96.53, 44.47], [-96.75, 45.0], [-96.65, 45.25], [-96.75, 45.5], [-96.53, 46.03]]]]}, "2026-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.15, 42.75], [-92.25, 43.0], [-92.15, 43.25], [-92.25, 43.5], [-92.03, 44.03], [-91.5, 44.25], [-91.25, 44.15], [-91.0, 44.25], [-90.47, 44.03], [-90.25, 43.5], [-90.35, 43.25], [-90.32, 43.18], [-89.97, 43.03], [-89.75, 42.5], [-89.97, 41.97], [-90.5, 41.75], [-90.75, 41.85], [-90.82, 41.82], [-90.97, 41.47], [-91.5, 41.25], [-92.03, 41.47], [-92.25, 42.0], [-92.15, 42.25], [-92.25, 42.5], [-92.15, 42.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.855519392092788}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.306287014681672}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.600951730980114, 4.241186800870139, 4.8281185129964115, 5.967723990177774, 8.08047510782876]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.57542444864913, 5.73450622558596, 7.809669748942099, 11.179172770182333, 9.490641530354821]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.039807454444073, 9.424379776386976, 9.248656812381551, 9.643606643045997, 8.774076344550323]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.41738720114273, 11.855519392092788, 11.795968009630712, 11.842577062349505, 9.648971992148404]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.340187114456096, 1.4004174142174286, 1.3856791670437223, 1.4887402718247957, 1.4605978943784512]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4948332907120183, 1.6666638876532616, 1.6703458679202114, 1.8736236581441545, 1.6826693632171021]}}