{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:39.226538", "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-Mar-24_to_2021-Mar-26_24.5_-23.0"}, "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": 2021030000994}, "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 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 26 2021"}, "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": 59740.014931836515}, "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": ["Botswana"]}, "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": -23.0}, "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": 24.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.47, -21.97], [23.0, -21.75], [23.25, -21.85], [23.5, -21.75], [23.75, -21.85], [24.0, -21.75], [24.25, -21.85], [24.5, -21.75], [24.75, -21.85], [25.0, -21.75], [25.25, -21.85], [25.5, -21.75], [25.75, -21.85], [26.0, -21.75], [26.53, -21.97], [26.75, -22.5], [26.65, -22.75], [26.68, -22.82], [27.03, -22.97], [27.25, -23.5], [27.03, -24.03], [26.68, -24.18], [26.53, -24.53], [26.0, -24.75], [25.47, -24.53], [25.32, -24.18], [25.25, -24.15], [25.0, -24.25], [24.75, -24.15], [24.5, -24.25], [24.25, -24.15], [24.0, -24.25], [23.47, -24.03], [23.32, -23.68], [23.25, -23.65], [23.0, -23.75], [22.47, -23.53], [22.25, -23.0], [22.35, -22.75], [22.25, -22.5], [22.47, -21.97]]]]}, "2021-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.47, -21.97], [23.0, -21.75], [23.25, -21.85], [23.5, -21.75], [23.75, -21.85], [24.0, -21.75], [24.25, -21.85], [24.5, -21.75], [24.75, -21.85], [25.0, -21.75], [25.25, -21.85], [25.5, -21.75], [25.75, -21.85], [26.0, -21.75], [26.53, -21.97], [26.75, -22.5], [26.65, -22.75], [26.68, -22.82], [27.03, -22.97], [27.25, -23.5], [27.03, -24.03], [26.68, -24.18], [26.53, -24.53], [26.0, -24.75], [25.47, -24.53], [25.32, -24.18], [25.25, -24.15], [25.0, -24.25], [24.75, -24.15], [24.5, -24.25], [24.25, -24.15], [24.0, -24.25], [23.47, -24.03], [23.32, -23.68], [23.25, -23.65], [23.0, -23.75], [22.47, -23.53], [22.25, -23.0], [22.35, -22.75], [22.25, -22.5], [22.47, -21.97]]]]}, "2021-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.47, -21.97], [23.0, -21.75], [23.25, -21.85], [23.5, -21.75], [23.75, -21.85], [24.0, -21.75], [24.25, -21.85], [24.5, -21.75], [24.75, -21.85], [25.0, -21.75], [25.25, -21.85], [25.5, -21.75], [25.75, -21.85], [26.0, -21.75], [26.53, -21.97], [26.75, -22.5], [26.65, -22.75], [26.68, -22.82], [27.03, -22.97], [27.25, -23.5], [27.03, -24.03], [26.68, -24.18], [26.53, -24.53], [26.0, -24.75], [25.47, -24.53], [25.32, -24.18], [25.25, -24.15], [25.0, -24.25], [24.75, -24.15], [24.5, -24.25], [24.25, -24.15], [24.0, -24.25], [23.47, -24.03], [23.32, -23.68], [23.25, -23.65], [23.0, -23.75], [22.47, -23.53], [22.25, -23.0], [22.35, -22.75], [22.25, -22.5], [22.47, -21.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.8082510982143845}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.16382122290243}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.57870742967293, 20.79029217865599, 20.635313988525922]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.707680257324455, 19.872090038555086, 19.87366197040518]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.3356556292764323, -3.043826746245242, -3.111981293185614]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.8082510982143845, -3.380543430577575, -3.8011602266406044]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5416974201972717, -1.4298730968079343, -1.4734579233887608]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.791284897848656, -1.6041878197517982, -1.797691770688585]}}