{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:11.259149", "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-Apr-22_to_2012-Apr-24_25.5_-32.5"}, "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": 2012040001116}, "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": "April 22 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 24 2012"}, "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": "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": 59431.263395327675}, "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", "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": ["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": -32.5}, "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": 25.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -34.03], [20.75, -33.5], [20.97, -32.97], [21.5, -32.75], [21.75, -32.85], [22.0, -32.75], [22.25, -32.85], [22.5, -32.75], [22.75, -32.85], [22.82, -32.82], [22.97, -32.47], [23.32, -32.32], [23.47, -31.97], [24.0, -31.75], [24.5, -31.96], [25.0, -31.75], [25.25, -31.85], [25.5, -31.75], [25.75, -31.85], [26.0, -31.75], [26.25, -31.85], [26.5, -31.75], [27.03, -31.97], [27.25, -32.5], [27.13, -32.8], [27.53, -32.97], [27.75, -33.5], [27.53, -34.03], [27.0, -34.25], [26.75, -34.15], [26.5, -34.25], [26.25, -34.15], [26.18, -34.18], [26.03, -34.53], [25.5, -34.75], [25.25, -34.65], [25.0, -34.75], [24.75, -34.65], [24.5, -34.75], [23.97, -34.53], [23.82, -34.18], [23.75, -34.15], [23.5, -34.25], [23.25, -34.15], [23.0, -34.25], [22.75, -34.15], [22.5, -34.25], [22.25, -34.15], [22.0, -34.25], [21.75, -34.15], [21.5, -34.25], [20.97, -34.03]]]]}, "2012-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -34.03], [20.75, -33.5], [20.97, -32.97], [21.5, -32.75], [21.75, -32.85], [22.0, -32.75], [22.25, -32.85], [22.5, -32.75], [22.75, -32.85], [22.82, -32.82], [22.97, -32.47], [23.32, -32.32], [23.47, -31.97], [24.0, -31.75], [24.5, -31.96], [25.0, -31.75], [25.25, -31.85], [25.5, -31.75], [25.75, -31.85], [26.0, -31.75], [26.25, -31.85], [26.5, -31.75], [27.03, -31.97], [27.25, -32.5], [27.13, -32.8], [27.53, -32.97], [27.75, -33.5], [27.53, -34.03], [27.0, -34.25], [26.75, -34.15], [26.5, -34.25], [26.25, -34.15], [26.18, -34.18], [26.03, -34.53], [25.5, -34.75], [25.25, -34.65], [25.0, -34.75], [24.75, -34.65], [24.5, -34.75], [23.97, -34.53], [23.82, -34.18], [23.75, -34.15], [23.5, -34.25], [23.25, -34.15], [23.0, -34.25], [22.75, -34.15], [22.5, -34.25], [22.25, -34.15], [22.0, -34.25], [21.75, -34.15], [21.5, -34.25], [20.97, -34.03]]]]}, "2012-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -34.03], [20.75, -33.5], [20.97, -32.97], [21.5, -32.75], [21.75, -32.85], [22.0, -32.75], [22.25, -32.85], [22.5, -32.75], [22.75, -32.85], [22.82, -32.82], [22.97, -32.47], [23.32, -32.32], [23.47, -31.97], [24.0, -31.75], [24.5, -31.96], [25.0, -31.75], [25.25, -31.85], [25.5, -31.75], [25.75, -31.85], [26.0, -31.75], [26.25, -31.85], [26.5, -31.75], [27.03, -31.97], [27.25, -32.5], [27.13, -32.8], [27.53, -32.97], [27.75, -33.5], [27.53, -34.03], [27.0, -34.25], [26.75, -34.15], [26.5, -34.25], [26.25, -34.15], [26.18, -34.18], [26.03, -34.53], [25.5, -34.75], [25.25, -34.65], [25.0, -34.75], [24.75, -34.65], [24.5, -34.75], [23.97, -34.53], [23.82, -34.18], [23.75, -34.15], [23.5, -34.25], [23.25, -34.15], [23.0, -34.25], [22.75, -34.15], [22.5, -34.25], [22.25, -34.15], [22.0, -34.25], [21.75, -34.15], [21.5, -34.25], [20.97, -34.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.307235969363035}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.996475390315185}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.136474984162476, 9.926254160468318, 11.022369717102606]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.936007457489495, 5.777846018300636, 7.620560877585774]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.05303240843405, -6.113268103557852, -4.823125658953653]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.230292525706602, -8.307235969363035, -6.89826663771089]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.333970825167027, -2.0723745881990827, -1.6044620404103151]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5025913387456096, -2.349523982002983, -1.9329428482463291]}}