{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:09.195633", "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": "2021-Aug-24_to_2021-Aug-29_271.0_42.0"}, "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": 2021080002735}, "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 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 29 2021"}, "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": 57226.53999490198}, "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": 42.0}, "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": 271.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "271.0\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": 272.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.03, 43.03], [-89.5, 43.25], [-89.25, 43.15], [-89.18, 43.18], [-89.03, 43.53], [-88.5, 43.75], [-88.25, 43.65], [-88.0, 43.75], [-87.47, 43.53], [-87.25, 43.0], [-87.47, 42.47], [-87.82, 42.32], [-87.97, 41.97], [-88.32, 41.82], [-88.47, 41.47], [-89.0, 41.25], [-89.25, 41.35], [-89.5, 41.25], [-90.03, 41.47], [-90.25, 42.0], [-90.15, 42.25], [-90.25, 42.5], [-90.03, 43.03]]]]}, "2021-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.03, 43.03], [-89.5, 43.25], [-89.25, 43.15], [-89.18, 43.18], [-89.03, 43.53], [-88.5, 43.75], [-88.25, 43.65], [-88.0, 43.75], [-87.47, 43.53], [-87.25, 43.0], [-87.47, 42.47], [-87.82, 42.32], [-87.97, 41.97], [-88.32, 41.82], [-88.47, 41.47], [-89.0, 41.25], [-89.25, 41.35], [-89.5, 41.25], [-90.03, 41.47], [-90.25, 42.0], [-90.15, 42.25], [-90.25, 42.5], [-90.03, 43.03]]]]}, "2021-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.15, 42.75], [-90.25, 43.0], [-90.03, 43.53], [-89.5, 43.75], [-89.25, 43.65], [-89.0, 43.75], [-88.75, 43.65], [-88.5, 43.75], [-88.25, 43.65], [-88.0, 43.75], [-87.47, 43.53], [-87.25, 43.0], [-87.47, 42.47], [-87.82, 42.32], [-87.97, 41.97], [-88.32, 41.82], [-88.47, 41.47], [-89.0, 41.25], [-89.25, 41.35], [-89.5, 41.25], [-90.03, 41.47], [-90.25, 42.0], [-90.15, 42.25], [-90.25, 42.5], [-90.15, 42.75]]]]}, "2021-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.25, 42.5], [-92.03, 43.03], [-91.5, 43.25], [-91.25, 43.15], [-91.0, 43.25], [-90.75, 43.15], [-90.68, 43.18], [-90.53, 43.53], [-90.0, 43.75], [-89.75, 43.65], [-89.5, 43.75], [-89.25, 43.65], [-89.0, 43.75], [-88.75, 43.65], [-88.5, 43.75], [-87.97, 43.53], [-87.75, 43.0], [-87.85, 42.75], [-87.82, 42.68], [-87.47, 42.53], [-87.25, 42.0], [-87.47, 41.47], [-87.82, 41.32], [-87.97, 40.97], [-88.5, 40.75], [-88.75, 40.85], [-89.0, 40.75], [-89.25, 40.85], [-89.5, 40.75], [-89.75, 40.85], [-90.0, 40.75], [-90.25, 40.85], [-90.5, 40.75], [-90.75, 40.85], [-91.0, 40.75], [-91.53, 40.97], [-91.75, 41.5], [-91.65, 41.75], [-91.68, 41.82], [-92.03, 41.97], [-92.25, 42.5]]]]}, "2021-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.25, 42.5], [-92.03, 43.03], [-91.5, 43.25], [-91.25, 43.15], [-91.0, 43.25], [-90.75, 43.15], [-90.68, 43.18], [-90.53, 43.53], [-90.0, 43.75], [-89.75, 43.65], [-89.5, 43.75], [-89.25, 43.65], [-89.0, 43.75], [-88.75, 43.65], [-88.5, 43.75], [-87.97, 43.53], [-87.75, 43.0], [-87.85, 42.75], [-87.82, 42.68], [-87.47, 42.53], [-87.25, 42.0], [-87.47, 41.47], [-87.82, 41.32], [-87.97, 40.97], [-88.5, 40.75], [-88.75, 40.85], [-89.0, 40.75], [-89.25, 40.85], [-89.5, 40.75], [-89.75, 40.85], [-90.0, 40.75], [-90.25, 40.85], [-90.5, 40.75], [-90.75, 40.85], [-91.0, 40.75], [-91.53, 40.97], [-91.75, 41.5], [-91.65, 41.75], [-91.68, 41.82], [-92.03, 41.97], [-92.25, 42.5]]]]}, "2021-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.25, 42.5], [-92.03, 43.03], [-91.5, 43.25], [-91.25, 43.15], [-91.0, 43.25], [-90.75, 43.15], [-90.68, 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25.589805341674662, 25.56048956470829, 26.025361964599995, 27.688871195113563, 26.561329345889305]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.23366530973442, 26.202369968140147, 26.412451554805784, 27.264057986662408, 28.46286704080717, 27.340698565499224]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.583142280612711, 4.299864846302252, 4.37757188889857, 4.513651664235989, 6.220689118155292, 5.195825425604295]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.663146729200321, 4.709576101333369, 4.946829775458184, 5.805244682112914, 7.201252985480096, 6.024286657074867]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.077904582750824, 1.563303487500086, 1.5465289751538869, 1.56225850347996, 2.1202689452588492, 1.7409094234067457]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.437235348382457, 1.6777079180510148, 1.7168535231818631, 1.9906028148724089, 2.444240400140527, 2.0379405636589505]}}