{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:04.726925", "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": "2026-Jan-28_to_2026-Jan-31_27.0_-15.0"}, "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": 2026010002510}, "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": "January 28 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 31 2026"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 56572.125943841325}, "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": ["Zambia"]}, "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": -15.0}, "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": 27.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[24.47, -15.97], [25.0, -15.75], [25.25, -15.85], [25.32, -15.82], [25.35, -15.75], [25.25, -15.5], [25.35, -15.25], [25.25, -15.0], [25.35, -14.75], [25.25, -14.5], [25.47, -13.97], [26.0, -13.75], [26.25, -13.85], [26.32, -13.82], [26.47, -13.47], [27.0, -13.25], [27.53, -13.47], [27.68, -13.82], [28.03, -13.97], [28.25, -14.5], [28.15, -14.75], [28.25, -15.0], [28.03, -15.53], [27.5, -15.75], [27.25, -15.65], [27.18, -15.68], [27.15, -15.75], [27.25, -16.0], [27.15, -16.25], [27.18, -16.32], [27.25, -16.35], [27.5, -16.25], [28.03, -16.47], [28.25, -17.0], [28.03, -17.53], [27.5, -17.75], [27.25, -17.65], [27.0, -17.75], [26.5, -17.54], [26.0, -17.75], [25.47, -17.53], [25.32, -17.18], [25.25, -17.15], [25.0, -17.25], [24.47, -17.03], [24.25, -16.5], [24.47, -15.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa", "E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.0, -17.25], [24.47, -17.03], [24.25, -16.5], [24.47, -15.97], [25.0, -15.75], [25.25, -15.85], [25.32, -15.82], [25.47, -15.47], [25.82, -15.32], [25.97, -14.97], [26.32, -14.82], [26.47, -14.47], [27.0, -14.25], [27.53, -14.47], [27.75, -15.0], [27.53, -15.53], [27.18, -15.68], [27.15, -15.75], [27.25, -16.0], [27.15, -16.25], [27.18, -16.32], [27.25, -16.35], [27.5, -16.25], [28.03, -16.47], [28.25, -17.0], [28.03, -17.53], [27.5, -17.75], [27.25, -17.65], [27.0, -17.75], [26.5, -17.54], [26.0, -17.75], [25.47, -17.53], [25.32, -17.18], [25.25, -17.15], [25.0, -17.25]]]]}, "2026-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.0, -17.25], [24.47, -17.03], [24.25, -16.5], [24.47, -15.97], [25.0, -15.75], [25.25, -15.85], [25.32, -15.82], [25.35, -15.75], [25.25, -15.5], [25.35, -15.25], [25.25, -15.0], [25.35, -14.75], [25.25, -14.5], [25.47, -13.97], [26.0, -13.75], [26.25, -13.85], [26.32, -13.82], [26.47, -13.47], [27.0, -13.25], [27.53, -13.47], [27.68, -13.82], [28.03, -13.97], [28.25, -14.5], [28.15, -14.75], [28.25, -15.0], [28.03, -15.53], [27.5, -15.75], [27.25, -15.65], [27.18, -15.68], [27.15, -15.75], [27.25, -16.0], [27.15, -16.25], [27.18, -16.32], [27.25, -16.35], [27.5, -16.25], [28.03, -16.47], [28.25, -17.0], [28.03, -17.53], [27.5, -17.75], [27.25, -17.65], [27.0, -17.75], [26.5, -17.54], [26.0, -17.75], [25.47, -17.53], [25.32, -17.18], [25.25, -17.15], [25.0, -17.25]]]]}, "2026-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.0, -17.25], [24.47, -17.03], [24.25, -16.5], [24.47, -15.97], [25.0, -15.75], [25.25, -15.85], [25.32, -15.82], [25.35, -15.75], [25.25, -15.5], [25.35, -15.25], [25.25, -15.0], [25.35, -14.75], [25.25, -14.5], [25.47, -13.97], [26.0, -13.75], [26.25, -13.85], [26.32, -13.82], [26.47, -13.47], [27.0, -13.25], [27.53, -13.47], [27.68, -13.82], [28.03, -13.97], [28.25, -14.5], [28.15, -14.75], [28.25, -15.0], [28.03, -15.53], [27.5, 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"Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.136320386121838}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5771509186554244}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.16368484497076, 23.872840533340252, 24.14931868168344, 23.821661191998146]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.50717442830404, 26.026177978515648, 25.769136047363304, 24.78998209635421]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5104889951390248, 1.4754169479336143, 1.7242695092276197, 1.5593610512014855]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9042207236773265, 1.9806857345309368, 2.136320386121838, 1.9228669081093699]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3471604164064406, 1.423127476739599, 1.712332370334828, 1.6840182090462152]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5524793643740802, 1.8072275629130434, 2.2377487715613604, 2.1072356114188517]}}