{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:08.320447", "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": "2023-Jun-28_to_2023-Jul-06_26.0_-20.5"}, "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": 2023060002885}, "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 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 125885.32515166605}, "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", "Zambia", "Zimbabwe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -20.5}, "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": 26.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "26.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[25.35, -19.75], [25.25, -19.5], [25.35, -19.25], [25.32, -19.18], [24.97, -19.03], [24.82, -18.68], [24.47, -18.53], [24.25, -18.0], [24.47, -17.47], [25.0, -17.25], [25.25, -17.35], [25.32, -17.32], [25.35, -17.25], [25.25, -17.0], [25.47, -16.47], [25.82, -16.32], [25.97, -15.97], [26.5, -15.75], [27.0, -15.96], [27.5, -15.75], [28.03, -15.97], [28.2, -16.37], [28.32, -16.32], [28.47, -15.97], [29.0, -15.75], [29.53, -15.97], [29.75, -16.5], [29.65, -16.75], [29.75, -17.0], [29.53, -17.53], [29.0, -17.75], [28.75, -17.65], [28.68, -17.68], [28.54, -18.0], [28.75, -18.5], [28.53, -19.03], [28.18, -19.18], [28.15, -19.25], [28.18, -19.32], [28.25, -19.35], [28.5, -19.25], [29.03, -19.47], [29.25, -20.0], [29.03, -20.53], [28.5, -20.75], [28.25, -20.65], [28.0, -20.75], [27.75, -20.65], [27.68, -20.68], [27.53, -21.03], [27.18, -21.18], [27.03, -21.53], [26.5, -21.75], [26.25, -21.65], [26.0, -21.75], [25.47, -21.53], [25.32, -21.18], [24.97, -21.03], [24.75, -20.5], [24.97, -19.97], [25.32, -19.82], [25.35, -19.75]]]]}}, "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": {"2023-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, -19.03], [24.75, -18.5], [24.97, -17.97], [25.38, -17.8], [25.25, -17.5], [25.47, -16.97], [26.0, -16.75], [26.25, -16.85], [26.5, -16.75], [27.03, -16.97], [27.25, -17.5], [27.03, -18.03], [26.5, -18.25], [26.75, -18.35], [27.0, -18.25], [27.53, -18.47], [27.75, -19.0], [27.65, -19.25], [27.75, -19.5], [27.53, -20.03], [27.0, -20.25], [26.47, -20.03], [26.32, -19.68], [26.25, -19.65], [26.0, -19.75], [25.47, -19.53], [25.32, -19.18], [24.97, -19.03]], [[26.25, -18.15], [26.13, -18.2], [26.18, -18.32], [26.25, -18.35], [26.5, -18.25], [26.25, -18.15]]]]}, "2023-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, -18.53], [24.25, -18.0], [24.47, -17.47], [25.0, -17.25], [25.25, -17.35], [25.32, -17.32], [25.35, -17.25], [25.25, -17.0], [25.47, -16.47], [25.82, -16.32], [25.97, -15.97], [26.5, -15.75], [27.0, -15.96], [27.5, -15.75], [28.03, -15.97], [28.2, -16.37], [28.32, -16.32], [28.47, -15.97], [29.0, -15.75], [29.53, -15.97], [29.75, -16.5], [29.65, -16.75], [29.75, -17.0], [29.53, -17.53], [29.0, -17.75], [28.75, -17.65], [28.68, -17.68], [28.54, -18.0], [28.75, -18.5], [28.53, -19.03], [28.18, -19.18], [28.15, -19.25], [28.18, -19.32], [28.25, -19.35], [28.5, -19.25], [29.03, -19.47], [29.25, -20.0], [29.03, -20.53], [28.5, -20.75], [28.25, -20.65], [28.0, -20.75], [27.75, -20.65], [27.5, -20.75], [26.97, -20.53], [26.82, -20.18], [26.47, -20.03], [26.32, -19.68], [26.25, -19.65], [26.0, -19.75], [25.47, -19.53], [25.32, -19.18], [24.97, -19.03], [24.82, -18.68], [24.47, -18.53]]]]}, "2023-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, -18.53], [24.25, -18.0], [24.47, -17.47], [25.0, -17.25], [25.25, -17.35], [25.32, -17.32], [25.35, -17.25], [25.25, -17.0], [25.47, -16.47], [25.82, -16.32], [25.97, -15.97], [26.5, -15.75], [27.0, -15.96], [27.5, -15.75], [28.03, -15.97], [28.2, -16.37], [28.32, -16.32], [28.47, -15.97], [29.0, -15.75], [29.53, -15.97], [29.75, -16.5], [29.65, -16.75], [29.75, -17.0], [29.53, -17.53], [29.0, -17.75], [28.75, -17.65], [28.68, -17.68], [28.54, -18.0], [28.75, -18.5], [28.53, -19.03], [28.18, -19.18], [28.15, -19.25], [28.18, -19.32], [28.25, -19.35], [28.5, -19.25], [29.03, -19.47], [29.25, -20.0], [29.03, -20.53], [28.5, -20.75], [28.25, -20.65], [28.0, -20.75], [27.75, -20.65], [27.5, -20.75], [26.97, -20.53], [26.82, -20.18], [26.47, -20.03], [26.32, -19.68], [26.25, -19.65], [26.0, -19.75], [25.47, -19.53], [25.32, -19.18], [24.97, -19.03], [24.82, -18.68], [24.47, -18.53]]]]}, "2023-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, -18.53], [24.25, -18.0], [24.47, -17.47], [25.0, -17.25], [25.25, -17.35], [25.32, -17.32], [25.35, -17.25], [25.25, -17.0], [25.47, -16.47], [25.82, -16.32], [25.97, -15.97], [26.5, -15.75], [27.0, -15.96], [27.5, -15.75], [28.03, -15.97], [28.2, -16.37], [28.32, -16.32], [28.47, -15.97], [29.0, -15.75], [29.53, -15.97], [29.75, -16.5], [29.65, -16.75], [29.75, -17.0], [29.53, -17.53], [29.0, -17.75], [28.75, -17.65], [28.68, -17.68], [28.54, -18.0], [28.75, -18.5], [28.53, -19.03], [28.18, -19.18], [28.15, -19.25], [28.18, -19.32], [28.25, -19.35], [28.5, -19.25], [29.03, -19.47], [29.25, -20.0], [29.03, -20.53], [28.5, -20.75], [28.25, -20.65], [28.0, -20.75], [27.75, -20.65], [27.68, -20.68], [27.53, -21.03], [27.18, -21.18], [27.03, -21.53], [26.5, -21.75], [26.25, -21.65], [26.0, -21.75], [25.47, -21.53], [25.32, -21.18], [24.97, -21.03], [24.75, -20.5], [24.97, -19.97], [25.32, -19.82], [25.35, -19.75], [25.25, -19.5], [25.35, -19.25], [25.32, -19.18], [24.97, -19.03], [24.82, -18.68], [24.47, -18.53]]]]}, "2023-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, -21.03], [24.75, -20.5], [24.97, -19.97], [25.32, -19.82], [25.35, -19.75], [25.25, -19.5], [25.35, -19.25], [25.25, -19.0], [25.47, -18.47], [26.0, -18.25], [26.25, -18.35], [26.5, -18.25], [26.75, -18.35], [26.82, -18.32], [26.97, -17.97], [27.5, -17.75], [28.03, -17.97], [28.25, -18.5], [28.15, -18.75], [28.25, -19.0], [28.15, -19.25], [28.25, -19.5], [28.15, -19.75], [28.25, -20.0], [28.03, -20.53], [27.68, -20.68], [27.53, -21.03], [27.18, -21.18], [27.03, -21.53], [26.5, -21.75], [26.25, -21.65], [26.0, -21.75], [25.47, -21.53], [25.32, -21.18], [24.97, -21.03]]]]}, "2023-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, -21.03], [24.75, -20.5], [24.97, -19.97], [25.32, -19.82], [25.35, -19.75], [25.25, -19.5], [25.47, -18.97], [26.0, -18.75], [26.25, -18.85], [26.5, -18.75], [26.75, -18.85], [27.0, -18.75], [27.25, -18.85], [27.5, -18.75], [28.03, -18.97], [28.25, -19.5], [28.15, -19.75], [28.25, -20.0], [28.03, -20.53], [27.68, -20.68], [27.53, -21.03], [27.18, -21.18], [27.03, -21.53], [26.5, -21.75], [26.25, -21.65], [26.0, -21.75], [25.47, -21.53], [25.32, -21.18], [24.97, -21.03]]]]}, "2023-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.25, -19.5], [25.47, -18.97], [26.0, -18.75], [26.25, -18.85], [26.5, -18.75], [26.75, -18.85], [27.0, -18.75], [27.25, -18.85], [27.5, -18.75], [28.03, -18.97], [28.25, -19.5], [28.03, -20.03], [27.68, -20.18], [27.53, -20.53], [27.18, -20.68], [27.15, -20.75], [27.25, -21.0], [27.03, -21.53], [26.5, -21.75], [25.97, -21.53], [25.82, -21.18], [25.47, -21.03], [25.25, -20.5], [25.46, -20.0], [25.25, -19.5]]]]}, "2023-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.47, -19.97], [26.0, -19.75], [26.53, -19.97], [26.75, -20.5], [26.53, -21.03], [26.0, -21.25], [25.47, -21.03], [25.25, -20.5], [25.47, -19.97]]]]}, "2023-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.47, -19.97], [26.0, -19.75], [26.53, -19.97], [26.75, -20.5], [26.53, -21.03], [26.0, -21.25], [25.47, -21.03], [25.25, -20.5], [25.47, -19.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.9250844431283554}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.5591238876955402}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.715654383172023, 18.947351424157375, 19.20242303663224, 18.92584323175788, 18.88429336130241, 19.015987423392403, 18.721026235888985, 18.70403304354494, 18.496039695815966]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.105463084633527, 21.79715271352927, 22.410498893014505, 21.404869493302215, 20.463452181710522, 19.92721023602644, 19.406270479859415, 18.70403304354494, 18.496039695815966]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.5206348665335065, 2.4071457324150387, 2.743295235802414, 2.5314951652983093, 2.659591063969141, 2.679029851979103, 2.3314237261875457, 2.078522240971722, 1.928743179594278]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.841421606547044, 3.2775400958283853, 3.883123608670644, 3.109549178552868, 3.9250844431283554, 3.5182361349595794, 2.8462197247198446, 2.078522240971722, 1.928743179594278]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.35662244525053, 1.3662315452582976, 1.579558844304515, 1.4444993778996118, 1.4985461065923245, 1.5479507056732549, 1.4109603248857965, 1.6083737546573014, 1.482520133830536]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5145383153539025, 1.81218241835135, 2.317716477927889, 1.787339889234607, 2.0892353880862475, 1.8995868736866972, 1.7268198947630826, 1.6083737546573014, 1.482520133830536]}}