{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:04.541770", "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": "2013-Apr-25_to_2013-Apr-28_32.0_-23.5"}, "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": 2013040000984}, "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 25 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 28 2013"}, "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": 51284.80240238351}, "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": ["Mozambique", "South Africa", "Zimbabwe"]}, "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": []}, "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": -23.5}, "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": 32.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 32.75}, "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": -21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.75, -21.5], [28.97, -20.97], [29.5, -20.75], [29.75, -20.85], [30.0, -20.75], [30.53, -20.97], [30.68, -21.32], [31.0, -21.46], [31.5, -21.25], [32.03, -21.47], [32.25, -22.0], [32.15, -22.25], [32.18, -22.32], [32.53, -22.47], [32.75, -23.0], [32.65, -23.25], [32.75, -23.5], [32.65, -23.75], [32.75, -24.0], [32.53, -24.53], [32.0, -24.75], [31.75, -24.65], [31.5, -24.75], [30.97, -24.53], [30.82, -24.18], [30.75, -24.15], [30.5, -24.25], [29.97, -24.03], [29.75, -23.5], [29.88, -23.2], [29.47, -23.03], [29.25, -22.5], [29.35, -22.25], [29.32, -22.18], [28.97, -22.03], [28.75, -21.5]]]]}, "2013-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.75, -21.5], [28.97, -20.97], [29.5, -20.75], [29.75, -20.85], [30.0, -20.75], [30.53, -20.97], [30.68, -21.32], [31.0, -21.46], [31.5, -21.25], [32.03, -21.47], [32.25, -22.0], [32.15, -22.25], [32.18, -22.32], [32.53, -22.47], [32.75, -23.0], [32.65, -23.25], [32.68, -23.32], [33.03, -23.47], [33.25, -24.0], [33.03, -24.53], [32.5, -24.75], [32.25, -24.65], [32.0, -24.75], [31.75, -24.65], [31.5, -24.75], [30.97, -24.53], [30.82, -24.18], [30.75, -24.15], [30.5, -24.25], [29.97, -24.03], [29.75, -23.5], [29.88, -23.2], [29.47, -23.03], [29.25, -22.5], [29.35, -22.25], [29.32, -22.18], [28.97, -22.03], [28.75, -21.5]]]]}, "2013-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.75, -21.5], [28.97, -20.97], [29.5, -20.75], [29.75, -20.85], [30.0, -20.75], [30.53, -20.97], [30.68, -21.32], [31.0, -21.46], [31.5, -21.25], [32.03, -21.47], [32.25, -22.0], [32.15, -22.25], [32.18, -22.32], [32.53, -22.47], [32.75, -23.0], [32.65, -23.25], [32.68, -23.32], [33.03, -23.47], [33.25, -24.0], [33.03, -24.53], [32.5, -24.75], [32.25, -24.65], [32.0, -24.75], [31.75, -24.65], [31.5, -24.75], [30.97, -24.53], [30.82, -24.18], [30.75, -24.15], [30.5, -24.25], [29.97, -24.03], [29.75, -23.5], [29.88, -23.2], [29.47, -23.03], [29.25, -22.5], [29.35, -22.25], [29.32, -22.18], [28.97, -22.03], [28.75, -21.5]]]]}, "2013-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.35, -23.25], [31.25, -23.0], [31.47, -22.47], [32.0, -22.25], [32.53, -22.47], [32.75, -23.0], [32.65, -23.25], [32.68, -23.32], [33.03, -23.47], [33.25, -24.0], [33.03, -24.53], [32.5, -24.75], [32.25, -24.65], [32.0, -24.75], [31.47, -24.53], [31.25, -24.0], [31.35, -23.75], [31.25, -23.5], [31.35, -23.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.3044324379199}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.558124256624375}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.086968581162353, 18.748420201938416, 18.866421922738255, 20.097091274664024]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.502094345764476, 17.47780175208976, 17.449141089520765, 19.879013519301168]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5438969971502807, -3.798468201764728, -3.4751456171586503, -2.910446233853449]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.189200562199687, -4.3044324379199, -3.8860370685340513, -3.093795139047984]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5227275134848883, -1.610474687418526, -1.4706605221078912, -1.349100581174917]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7495404978101827, -1.7538940348251306, -1.60082766391033, -1.4116288541883713]}}