{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:23.354842", "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": "2020-Mar-25_to_2020-Mar-27_143.0_41.0"}, "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": 2020030002540}, "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 25 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 27 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 87291.56180338078}, "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": ["Japan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": ["Japan Sea", "North Pacific Ocean"]}, "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": 41.0}, "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": 143.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "143.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 139.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.96, 43.5], [138.75, 44.0], [138.85, 44.25], [138.75, 44.5], [138.97, 45.03], [139.5, 45.25], [140.03, 45.03], [140.18, 44.68], [140.25, 44.65], [140.5, 44.75], [140.75, 44.65], [141.0, 44.75], [141.53, 44.53], [141.75, 44.0], [141.53, 43.47], [141.18, 43.32], [141.13, 43.2], [141.25, 43.15], [141.5, 43.25], [141.75, 43.15], [142.0, 43.25], [142.53, 43.03], [142.68, 42.68], [143.03, 42.53], [143.18, 42.18], [143.25, 42.15], [143.5, 42.25], [143.75, 42.15], [144.0, 42.25], [144.53, 42.03], [144.68, 41.68], [145.03, 41.53], [145.25, 41.0], [145.03, 40.47], [144.68, 40.32], [144.53, 39.97], [144.0, 39.75], [143.75, 39.85], [143.5, 39.75], [143.25, 39.85], [143.0, 39.75], [142.75, 39.85], [142.5, 39.75], [141.97, 39.97], [141.82, 40.32], [141.75, 40.35], [141.5, 40.25], [140.97, 40.47], [140.82, 40.82], [140.75, 40.85], [140.68, 40.82], [140.53, 40.47], [140.0, 40.25], [139.47, 40.47], [139.25, 41.0], [139.46, 41.5], [139.32, 41.82], [138.97, 41.97], [138.75, 42.5], [138.85, 42.75], [138.75, 43.0], [138.96, 43.5]]]]}, "2020-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.96, 43.5], [138.75, 44.0], [138.85, 44.25], [138.75, 44.5], [138.97, 45.03], [139.5, 45.25], [140.03, 45.03], [140.18, 44.68], [140.25, 44.65], [140.5, 44.75], [140.75, 44.65], [141.0, 44.75], [141.53, 44.53], [141.75, 44.0], [141.53, 43.47], [141.18, 43.32], [141.13, 43.2], [141.25, 43.15], [141.5, 43.25], [141.75, 43.15], [142.0, 43.25], [142.53, 43.03], [142.68, 42.68], [143.03, 42.53], [143.18, 42.18], [143.25, 42.15], [143.5, 42.25], [143.75, 42.15], [144.0, 42.25], [144.53, 42.03], [144.68, 41.68], [145.03, 41.53], [145.25, 41.0], [145.03, 40.47], [144.68, 40.32], [144.53, 39.97], [144.0, 39.75], [143.75, 39.85], [143.5, 39.75], [143.25, 39.85], [143.0, 39.75], [142.75, 39.85], [142.5, 39.75], [141.97, 39.97], [141.82, 40.32], [141.75, 40.35], [141.5, 40.25], [140.97, 40.47], [140.82, 40.82], [140.75, 40.85], [140.68, 40.82], [140.53, 40.47], [140.0, 40.25], [139.47, 40.47], [139.25, 41.0], [139.46, 41.5], [139.32, 41.82], [138.97, 41.97], [138.75, 42.5], [138.85, 42.75], [138.75, 43.0], [138.96, 43.5]]]]}, "2020-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.96, 43.5], [138.75, 44.0], [138.85, 44.25], [138.75, 44.5], [138.97, 45.03], [139.5, 45.25], [140.03, 45.03], [140.18, 44.68], [140.25, 44.65], [140.5, 44.75], [140.75, 44.65], [141.0, 44.75], [141.53, 44.53], [141.75, 44.0], [141.53, 43.47], [141.18, 43.32], [141.13, 43.2], [141.25, 43.15], [141.5, 43.25], [141.75, 43.15], [142.0, 43.25], [142.53, 43.03], [142.68, 42.68], [143.03, 42.53], [143.18, 42.18], [143.25, 42.15], [143.5, 42.25], [143.75, 42.15], [144.0, 42.25], [144.53, 42.03], [144.68, 41.68], [145.03, 41.53], [145.25, 41.0], [145.03, 40.47], [144.68, 40.32], [144.53, 39.97], [144.0, 39.75], [143.75, 39.85], [143.5, 39.75], [143.25, 39.85], [143.0, 39.75], [142.75, 39.85], [142.5, 39.75], [141.97, 39.97], [141.82, 40.32], [141.75, 40.35], [141.5, 40.25], [140.97, 40.47], [140.82, 40.82], 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4.364054295871557, 4.984047695974738]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.46539175805799, 6.029152296941504, 7.183033905053833]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.691970109075072, 2.1822339135699775, 2.5722135820665897]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.241141306804815, 2.9072063892971576, 3.8021142195484448]}}