{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:47.790974", "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": "2012-Mar-07_to_2012-Mar-10_23.0_-13.5"}, "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": 2012030000573}, "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 07 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 10 2012"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 105046.22458916609}, "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": ["Angola", "Zambia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "W.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": []}, "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": -13.5}, "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": 23.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -11.97], [21.5, -11.75], [22.03, -11.97], [22.18, -12.32], [22.25, -12.35], [22.5, -12.25], [23.0, -12.46], [23.5, -12.25], [24.0, -12.46], [24.5, -12.25], [25.03, -12.47], [25.25, -13.0], [25.15, -13.25], [25.18, -13.32], [25.25, -13.35], [25.5, -13.25], [26.03, -13.47], [26.18, -13.82], [26.53, -13.97], [26.75, -14.5], [26.53, -15.03], [26.0, -15.25], [25.75, -15.15], [25.5, -15.25], [25.25, -15.15], [25.0, -15.25], [24.75, -15.15], [24.5, -15.25], [24.25, -15.15], [24.18, -15.18], [24.03, -15.53], [23.5, -15.75], [22.97, -15.53], [22.82, -15.18], [22.75, -15.15], [22.5, -15.25], [22.25, -15.15], [22.0, -15.25], [21.47, -15.03], [21.32, -14.68], [20.97, -14.53], [20.75, -14.0], [20.96, -13.5], [20.75, -13.0], [20.85, -12.75], [20.75, -12.5], [20.97, -11.97]]]]}, "2012-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, -12.97], [20.82, -12.82], [20.85, -12.75], [20.75, -12.5], [20.97, -11.97], [21.5, -11.75], [22.03, -11.97], [22.18, -12.32], [22.25, -12.35], [22.5, -12.25], [23.0, -12.46], [23.5, -12.25], [23.75, -12.35], [24.0, -12.25], [24.25, -12.35], [24.5, -12.25], [25.03, -12.47], [25.25, -13.0], [25.15, -13.25], [25.18, -13.32], [25.25, -13.35], [25.5, -13.25], [26.03, -13.47], [26.18, -13.82], [26.53, -13.97], [26.75, -14.5], [26.53, -15.03], [26.0, -15.25], [25.75, -15.15], [25.5, -15.25], [25.25, -15.15], [25.0, -15.25], [24.75, -15.15], [24.5, -15.25], [24.25, -15.15], [24.18, -15.18], [24.03, -15.53], [23.5, -15.75], [22.97, -15.53], [22.82, -15.18], [22.75, -15.15], [22.5, -15.25], [22.25, -15.15], [22.0, -15.25], [21.47, -15.03], [21.32, -14.68], [21.25, -14.65], [21.0, -14.75], [20.47, -14.53], [20.25, -14.0], [20.35, -13.75], [20.25, -13.5], [20.47, -12.97]]]]}, "2012-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, -12.97], [20.82, -12.82], [20.85, -12.75], [20.75, -12.5], [20.97, -11.97], [21.5, -11.75], [22.03, -11.97], [22.18, -12.32], [22.25, -12.35], [22.5, -12.25], [23.0, -12.46], [23.5, -12.25], [23.75, -12.35], [24.0, -12.25], 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"Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.632622799924206, 19.267260466637254, 19.404599904869258, 19.53091422073379]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8513695424156007, -2.090383376381255, -2.078635062686934, -1.589582498022547]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.932784717909783, -2.73215078451409, -2.5875370413079963, -1.8850827015847358]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5066651535677564, -1.7341958011949625, -1.7957295787892902, -1.437548487819545]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.177978004872015, -2.0666484832464804, -2.2804074486071353, -1.6554347077469762]}}