{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:01.944222", "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-04_to_2026-Mar-10_273.5_43.0"}, "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": 2026030001194}, "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 04 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 10 2026"}, "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": 131642.73299842578}, "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": ["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": 43.0}, "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": 273.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "273.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 271.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 278.25}, "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": 48.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.12, 45.8], [-87.53, 45.97], [-87.75, 46.5], [-87.53, 47.03], [-87.0, 47.25], [-86.75, 47.15], [-86.5, 47.25], [-85.97, 47.03], [-85.75, 46.5], [-85.87, 46.2], [-85.75, 46.15], [-85.5, 46.25], [-84.97, 46.03], [-84.75, 45.5], [-84.97, 44.97], [-85.5, 44.75], [-85.75, 44.85], [-85.82, 44.82], [-85.97, 44.47], [-86.5, 44.25], [-87.03, 44.47], [-87.25, 45.0], [-87.15, 45.25], [-87.25, 45.5], [-87.12, 45.8]]]]}, "2026-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.53, 47.03], [-87.0, 47.25], [-86.75, 47.15], [-86.5, 47.25], [-85.97, 47.03], [-85.75, 46.5], [-85.87, 46.2], [-85.75, 46.15], [-85.5, 46.25], [-84.97, 46.03], [-84.75, 45.5], [-84.85, 45.25], [-84.75, 45.0], [-84.97, 44.47], [-85.32, 44.32], [-85.47, 43.97], [-86.0, 43.75], [-86.25, 43.85], [-86.32, 43.82], [-86.37, 43.7], [-85.97, 43.53], [-85.75, 43.0], [-85.97, 42.47], [-86.5, 42.25], [-87.03, 42.47], [-87.25, 43.0], [-87.12, 43.3], [-87.53, 43.47], [-87.75, 44.0], [-87.53, 44.53], [-87.18, 44.68], [-87.15, 44.75], [-87.18, 44.82], [-87.53, 44.97], [-87.75, 45.5], [-87.54, 46.0], [-87.75, 46.5], [-87.53, 47.03]]]]}, "2026-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.75, 43.5], [-88.53, 44.03], [-88.18, 44.18], [-88.03, 44.53], [-87.68, 44.68], [-87.65, 44.75], [-87.75, 45.0], [-87.65, 45.25], [-87.75, 45.5], [-87.54, 46.0], [-87.68, 46.32], [-88.03, 46.47], [-88.25, 47.0], [-88.15, 47.25], [-88.25, 47.5], [-88.15, 47.75], [-88.18, 47.82], [-88.53, 47.97], [-88.75, 48.5], [-88.53, 49.03], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.47, 49.03], [-86.32, 48.68], [-85.97, 48.53], [-85.82, 48.18], [-85.75, 48.15], [-85.5, 48.25], [-84.97, 48.03], [-84.82, 47.68], [-84.47, 47.53], [-84.25, 47.0], [-84.37, 46.7], [-84.25, 46.65], [-84.0, 46.75], [-83.75, 46.65], [-83.5, 46.75], [-82.97, 46.53], [-82.82, 46.18], [-82.75, 46.15], [-82.5, 46.25], [-81.97, 46.03], [-81.82, 45.68], [-81.47, 45.53], [-81.25, 45.0], [-81.47, 44.47], [-82.0, 44.25], [-82.25, 44.35], [-82.5, 44.25], [-83.03, 44.47], [-83.18, 44.82], [-83.25, 44.85], [-83.5, 44.75], [-84.03, 44.97], [-84.18, 45.32], [-84.25, 45.35], [-84.5, 45.25], [-84.75, 45.35], [-84.82, 45.32], [-84.85, 45.25], [-84.75, 45.0], [-84.97, 44.47], [-85.32, 44.32], [-85.47, 43.97], [-86.0, 43.75], [-86.25, 43.85], [-86.32, 43.82], [-86.35, 43.75], [-86.32, 43.68], [-85.97, 43.53], [-85.75, 43.0], [-85.97, 42.47], [-86.32, 42.32], [-86.47, 41.97], [-86.82, 41.82], [-86.97, 41.47], [-87.5, 41.25], [-88.03, 41.47], [-88.25, 42.0], [-88.15, 42.25], [-88.25, 42.5], [-88.15, 42.75], [-88.18, 42.82], [-88.53, 42.97], [-88.75, 43.5]]]]}, "2026-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.75, 43.5], [-88.53, 44.03], [-88.18, 44.18], [-88.15, 44.25], [-88.18, 44.32], [-88.53, 44.47], [-88.75, 45.0], [-88.53, 45.53], [-88.18, 45.68], [-88.03, 46.03], [-87.62, 46.2], [-87.68, 46.32], [-88.03, 46.47], [-88.25, 47.0], [-88.15, 47.25], [-88.25, 47.5], [-88.15, 47.75], [-88.18, 47.82], [-88.53, 47.97], [-88.75, 48.5], [-88.53, 49.03], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.47, 48.53], [-85.32, 48.18], [-84.97, 48.03], [-84.82, 47.68], [-84.47, 47.53], [-84.25, 47.0], [-84.37, 46.7], [-84.25, 46.65], [-84.0, 46.75], [-83.75, 46.65], [-83.5, 46.75], [-83.25, 46.65], [-83.0, 46.75], [-82.47, 46.53], [-82.32, 46.18], [-81.97, 46.03], [-81.82, 45.68], [-81.47, 45.53], [-81.25, 45.0], [-81.47, 44.47], [-82.0, 44.25], [-82.25, 44.35], [-82.5, 44.25], [-82.75, 44.35], [-83.0, 44.25], [-83.53, 44.47], [-83.68, 44.82], [-83.75, 44.85], [-84.0, 44.75], [-84.53, 44.97], [-84.68, 45.32], [-84.75, 45.35], [-84.82, 45.32], [-84.85, 45.25], [-84.75, 45.0], [-84.97, 44.47], [-85.32, 44.32], [-85.47, 43.97], [-86.0, 43.75], [-86.25, 43.85], [-86.32, 43.82], [-86.35, 43.75], [-86.32, 43.68], [-85.97, 43.53], [-85.75, 43.0], [-85.97, 42.47], [-86.32, 42.32], [-86.47, 41.97], [-86.82, 41.82], [-86.97, 41.47], [-87.5, 41.25], [-88.03, 41.47], [-88.25, 42.0], [-88.15, 42.25], [-88.25, 42.5], [-88.15, 42.75], [-88.18, 42.82], [-88.53, 42.97], [-88.75, 43.5]]]]}, "2026-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.75, 43.5], [-88.53, 44.03], [-88.18, 44.18], [-88.15, 44.25], [-88.18, 44.32], [-88.53, 44.47], [-88.75, 45.0], [-88.53, 45.53], [-88.18, 45.68], [-88.03, 46.03], [-87.62, 46.2], [-87.68, 46.32], [-88.03, 46.47], [-88.25, 47.0], [-88.15, 47.25], [-88.25, 47.5], [-88.15, 47.75], [-88.18, 47.82], [-88.53, 47.97], [-88.75, 48.5], [-88.53, 49.03], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.47, 48.53], [-85.32, 48.18], [-84.97, 48.03], [-84.82, 47.68], [-84.47, 47.53], [-84.25, 47.0], [-84.37, 46.7], [-84.25, 46.65], [-84.0, 46.75], [-83.75, 46.65], [-83.5, 46.75], [-83.25, 46.65], [-83.0, 46.75], [-82.47, 46.53], [-82.32, 46.18], [-81.97, 46.03], [-81.82, 45.68], [-81.47, 45.53], [-81.25, 45.0], [-81.47, 44.47], [-82.0, 44.25], [-82.25, 44.35], [-82.5, 44.25], [-82.75, 44.35], [-83.0, 44.25], [-83.53, 44.47], [-83.68, 44.82], [-83.75, 44.85], [-84.0, 44.75], [-84.53, 44.97], [-84.68, 45.32], [-84.75, 45.35], [-84.82, 45.32], [-84.97, 44.97], [-85.5, 44.75], [-85.75, 44.85], [-85.82, 44.82], [-85.85, 44.75], [-85.75, 44.5], [-85.97, 43.97], [-86.32, 43.82], [-86.35, 43.75], [-86.32, 43.68], [-85.97, 43.53], [-85.75, 43.0], [-85.97, 42.47], [-86.32, 42.32], [-86.47, 41.97], [-86.82, 41.82], [-86.97, 41.47], [-87.5, 41.25], [-88.03, 41.47], [-88.25, 42.0], [-88.15, 42.25], [-88.25, 42.5], [-88.15, 42.75], [-88.18, 42.82], [-88.53, 42.97], [-88.75, 43.5]]]]}, "2026-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.75, 43.5], [-88.53, 44.03], [-88.18, 44.18], [-88.15, 44.25], [-88.18, 44.32], [-88.53, 44.47], [-88.75, 45.0], [-88.53, 45.53], [-88.18, 45.68], [-88.03, 46.03], [-87.62, 46.2], [-87.68, 46.32], [-88.03, 46.47], [-88.25, 47.0], [-88.15, 47.25], [-88.25, 47.5], [-88.15, 47.75], [-88.18, 47.82], [-88.53, 47.97], [-88.75, 48.5], [-88.53, 49.03], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.47, 48.53], [-85.32, 48.18], [-84.97, 48.03], [-84.82, 47.68], [-84.47, 47.53], [-84.25, 47.0], [-84.37, 46.7], [-84.25, 46.65], [-84.0, 46.75], [-83.75, 46.65], [-83.5, 46.75], [-83.25, 46.65], [-83.0, 46.75], [-82.47, 46.53], [-82.32, 46.18], [-81.97, 46.03], [-81.82, 45.68], [-81.47, 45.53], [-81.25, 45.0], [-81.47, 44.47], [-82.0, 44.25], [-82.25, 44.35], [-82.5, 44.25], [-82.75, 44.35], [-83.0, 44.25], [-83.53, 44.47], [-83.68, 44.82], [-83.75, 44.85], [-84.0, 44.75], [-84.53, 44.97], [-84.68, 45.32], [-84.75, 45.35], [-84.82, 45.32], [-84.97, 44.97], [-85.5, 44.75], [-85.75, 44.85], [-85.82, 44.82], [-85.85, 44.75], [-85.75, 44.5], [-85.97, 43.97], [-86.32, 43.82], [-86.35, 43.75], [-86.32, 43.68], [-85.97, 43.53], [-85.75, 43.0], [-85.97, 42.47], [-86.32, 42.32], [-86.47, 41.97], [-86.82, 41.82], [-86.97, 41.47], [-87.5, 41.25], [-88.03, 41.47], [-88.25, 42.0], [-88.15, 42.25], [-88.25, 42.5], [-88.15, 42.75], [-88.18, 42.82], [-88.53, 42.97], [-88.75, 43.5]]]]}, "2026-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.75, 43.5], [-88.53, 44.03], [-88.0, 44.25], [-87.75, 44.15], [-87.68, 44.18], [-87.65, 44.25], [-87.75, 44.5], [-87.53, 45.03], [-87.0, 45.25], [-86.75, 45.15], [-86.5, 45.25], [-85.97, 45.03], [-85.75, 44.5], [-85.97, 43.97], [-86.32, 43.82], [-86.35, 43.75], [-86.32, 43.68], [-85.97, 43.53], [-85.75, 43.0], [-85.97, 42.47], [-86.32, 42.32], [-86.47, 41.97], [-86.82, 41.82], [-86.97, 41.47], [-87.5, 41.25], [-88.03, 41.47], [-88.25, 42.0], [-88.15, 42.25], [-88.25, 42.5], [-88.15, 42.75], [-88.18, 42.82], [-88.53, 42.97], [-88.75, 43.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 15.452177871402057}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.264241953268355}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.9472476535373175, 1.5781180161696398, 1.8385535146675807, 3.5879424201117445, 2.294799925151665, 5.348652541846604, 4.357045321994349]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.1423838297526459, 3.5995460510254134, 4.786757405598962, 10.380778249104821, 5.08688634236654, 13.073060607910179, 6.6584640502929915]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.928269139547363, 6.438322442998094, 7.37529773323856, 8.855081707583333, 7.410718747557165, 10.295749044902143, 6.13869853500771]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.86085165792241, 7.3367693537067, 8.925929110330856, 12.165990178646894, 10.345551000421665, 15.452177871402057, 6.965961277368535]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3011596146928366, 1.2441673240909739, 1.4044648904485468, 1.7155510342965912, 1.4379953299008776, 2.0127186880261156, 1.416596487756076]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4296833909146478, 1.3334266808567667, 1.5680494885894143, 2.384519031692506, 1.8340334734248072, 2.6238722466874886, 1.6974364228951428]}}