{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:49.459591", "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": "2022-Jun-07_to_2022-Jun-12_33.0_-25.0"}, "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": 2022060000374}, "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": "June 07 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 12 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 59070.92780019075}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -25.0}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[30.47, -22.47], [31.0, -22.25], [31.25, -22.35], [31.5, -22.25], [32.03, -22.47], [32.18, -22.82], [32.25, -22.85], [32.5, -22.75], [33.03, -22.97], [33.25, -23.5], [33.15, -23.75], [33.18, -23.82], [33.25, -23.85], [33.5, -23.75], [34.03, -23.97], [34.25, -24.5], [34.15, -24.75], [34.25, -25.0], [34.03, -25.53], [33.68, -25.68], [33.53, -26.03], [33.18, -26.18], [33.15, -26.25], [33.25, -26.5], [33.03, -27.03], [32.5, -27.25], [31.97, -27.03], [31.75, -26.5], [31.85, -26.25], [31.82, -26.18], [31.47, -26.03], [31.25, -25.5], [31.46, -25.0], [31.32, -24.68], [30.97, -24.53], [30.82, -24.18], [30.47, -24.03], [30.25, -23.5], [30.35, -23.25], [30.25, -23.0], [30.47, -22.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, -24.03], [30.25, -23.5], [30.47, -22.97], [30.82, -22.82], [30.97, -22.47], [31.5, -22.25], [32.03, -22.47], [32.18, -22.82], [32.53, -22.97], [32.75, -23.5], [32.65, -23.75], [32.7, -23.87], [33.0, -23.75], [33.53, -23.97], [33.75, -24.5], [33.53, -25.03], [33.13, -25.2], [33.25, -25.5], [33.15, -25.75], [33.25, -26.0], [33.15, -26.25], [33.25, -26.5], [33.03, -27.03], [32.5, -27.25], [31.97, -27.03], [31.75, -26.5], [31.85, -26.25], [31.82, -26.18], [31.47, -26.03], [31.25, -25.5], [31.47, -24.97], [32.0, -24.75], [31.75, -24.65], [31.5, -24.75], [30.97, -24.53], [30.82, -24.18], [30.47, -24.03]], [[32.25, -24.85], [32.38, -24.8], [32.3, -24.62], [32.0, -24.75], [32.25, -24.85]]]]}, "2022-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -23.0], [30.47, -22.47], [31.0, -22.25], [31.25, -22.35], [31.5, -22.25], [32.03, -22.47], [32.18, -22.82], [32.25, -22.85], [32.5, -22.75], [33.03, -22.97], [33.25, -23.5], [33.15, -23.75], [33.18, -23.82], [33.53, -23.97], [33.68, -24.32], [34.03, -24.47], [34.25, -25.0], [34.03, -25.53], [33.68, -25.68], [33.53, -26.03], [33.18, -26.18], [33.15, -26.25], [33.25, -26.5], [33.03, -27.03], [32.5, -27.25], [31.97, -27.03], [31.75, -26.5], [31.85, -26.25], [31.82, -26.18], [31.47, -26.03], [31.25, -25.5], [31.46, -25.0], [31.32, -24.68], [30.97, -24.53], [30.82, -24.18], [30.47, -24.03], [30.25, -23.5], [30.35, -23.25], [30.25, -23.0]]]]}, "2022-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -23.0], [30.47, -22.47], [31.0, -22.25], [31.25, -22.35], [31.5, -22.25], [32.03, -22.47], [32.18, -22.82], [32.25, -22.85], [32.5, -22.75], [33.03, -22.97], [33.25, -23.5], [33.15, -23.75], [33.18, -23.82], [33.25, -23.85], [33.5, -23.75], [34.03, -23.97], [34.25, -24.5], [34.15, -24.75], [34.25, -25.0], [34.03, -25.53], [33.68, -25.68], [33.53, -26.03], [33.18, -26.18], [33.15, -26.25], [33.25, -26.5], [33.03, -27.03], [32.5, -27.25], [31.97, -27.03], [31.75, -26.5], [31.85, -26.25], [31.82, -26.18], [31.47, -26.03], [31.25, -25.5], [31.46, -25.0], [31.32, -24.68], [30.97, -24.53], [30.82, -24.18], [30.47, -24.03], [30.25, -23.5], [30.35, -23.25], [30.25, -23.0]]]]}, "2022-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -23.0], [30.47, -22.47], [31.0, -22.25], [31.25, -22.35], [31.5, -22.25], [32.03, -22.47], [32.18, -22.82], [32.25, -22.85], [32.5, -22.75], [33.03, -22.97], [33.25, -23.5], [33.15, -23.75], [33.18, -23.82], [33.25, -23.85], [33.5, -23.75], [34.03, -23.97], [34.25, -24.5], [34.15, -24.75], [34.25, -25.0], [34.03, -25.53], [33.68, -25.68], [33.53, -26.03], [33.0, -26.25], [32.75, -26.15], [32.5, -26.25], [31.97, -26.03], [31.75, -25.5], [31.85, -25.25], [31.82, -25.18], [31.47, -25.03], [31.32, -24.68], [30.97, -24.53], [30.82, -24.18], [30.47, -24.03], [30.25, -23.5], [30.35, -23.25], [30.25, -23.0]]]]}, "2022-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, -23.97], [33.5, -23.75], [34.03, -23.97], [34.25, -24.5], [34.03, -25.03], [33.68, -25.18], [33.53, -25.53], [33.0, -25.75], [32.47, -25.53], [32.25, -25.0], [32.47, -24.47], [32.82, -24.32], [32.97, -23.97]]]]}, "2022-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, -24.47], [33.0, -24.25], [33.53, -24.47], [33.75, -25.0], [33.53, -25.53], [33.0, -25.75], [32.47, -25.53], [32.25, -25.0], [32.47, -24.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.508759639897505}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7059329361331113}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.49991600198797, 16.445475637801962, 16.381519410916496, 16.636636715331747, 17.869546001224194, 17.600971977563745]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.402994935127992, 14.603787295802647, 14.570239923203133, 14.943395930513987, 17.660030956768082, 17.600971977563745]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.633744260068579, -2.79995778355879, -2.8428970709589434, -2.6050062475927658, -1.944878170272034, -2.0098658423707434]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3548445601953745, -3.508759639897505, -3.415689091427282, -3.1347445718133145, -1.9746793587915477, -2.0098658423707434]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4864106368140375, -1.6447660550068235, -1.6687901782176826, -1.5147175722051123, -1.18844572392977, -1.2233850972901044]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8772175079590974, -1.876506821499765, -1.8537424587475821, -1.8874138520618131, -1.2023457110294322, -1.2233850972901044]}}