{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:45.658442", "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-Dec-19_to_2020-Dec-22_30.0_-31.0"}, "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": 2020120002320}, "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": "December 19 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 22 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 63151.68193531468}, "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": ["South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": ["Indian 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": -31.0}, "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": 30.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "30.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 28.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, -33.03], [28.25, -32.5], [28.47, -31.97], [29.0, -31.75], [29.25, -31.85], [29.32, -31.82], [29.35, -31.75], [29.25, -31.5], [29.35, -31.25], [29.25, -31.0], [29.35, -30.75], [29.25, -30.5], [29.47, -29.97], [30.0, -29.75], [30.25, -29.85], [30.5, -29.75], [31.03, -29.97], [31.18, -30.32], [31.53, -30.47], [31.75, -31.0], [31.65, -31.25], [31.75, -31.5], [31.53, -32.03], [31.18, -32.18], [31.03, -32.53], [30.68, -32.68], [30.53, -33.03], [30.0, -33.25], [29.75, -33.15], [29.5, -33.25], [29.25, -33.15], [29.0, -33.25], [28.47, -33.03]]]]}, "2020-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, -33.03], [28.25, -32.5], [28.47, -31.97], [29.0, -31.75], [29.25, -31.85], [29.32, -31.82], [29.35, -31.75], [29.25, -31.5], [29.35, -31.25], [29.25, -31.0], [29.35, -30.75], [29.25, -30.5], [29.47, -29.97], [30.0, -29.75], [30.25, -29.85], [30.5, -29.75], [31.03, -29.97], [31.18, -30.32], [31.25, -30.35], [31.5, -30.25], [32.03, -30.47], [32.18, -30.82], [32.25, -30.85], [32.5, -30.75], [32.75, -30.85], [33.0, -30.75], [33.53, -30.97], [33.75, -31.5], [33.65, -31.75], [33.75, -32.0], [33.53, -32.53], [33.0, -32.75], [32.75, -32.65], [32.5, -32.75], [32.25, -32.65], [32.18, -32.68], [32.03, -33.03], [31.5, -33.25], [30.97, -33.03], [30.82, -32.68], [30.75, -32.65], [30.68, -32.68], [30.53, -33.03], [30.0, -33.25], [29.75, -33.15], [29.5, -33.25], [29.25, -33.15], [29.0, -33.25], [28.47, -33.03]]]]}, "2020-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, -33.03], [28.25, -32.5], [28.47, -31.97], [29.0, -31.75], [29.25, -31.85], [29.32, -31.82], [29.35, -31.75], [29.25, -31.5], [29.35, -31.25], [29.25, -31.0], [29.35, -30.75], [29.25, -30.5], [29.47, -29.97], [30.0, -29.75], [30.25, -29.85], [30.5, -29.75], [31.03, -29.97], [31.18, -30.32], [31.25, -30.35], [31.5, -30.25], [32.03, -30.47], [32.18, -30.82], [32.25, -30.85], [32.5, -30.75], [32.75, -30.85], [33.0, -30.75], [33.53, -30.97], [33.75, -31.5], [33.65, -31.75], [33.75, -32.0], [33.53, -32.53], [33.0, 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4.547486850762368}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.125834227677985}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.694433822689177, 24.63177749510959, 24.887915184799226, 24.657125823372155]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.180365364608292, 25.306090574524717, 25.523034709880164, 25.198649041354486]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.2407630278645367, 2.050624877195103, 2.252609058246134, 1.8775027799987511]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.767821656495016, 3.600721981406082, 4.547486850762368, 1.9722691282890992]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5274251254041695, 1.4508760189339656, 1.587357800633127, 1.4032330401186406]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8341421520655692, 1.63478263576969, 1.794149063310244, 1.482633192908177]}}