{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:57.245200", "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-Jul-20_to_2022-Jul-25_23.5_-18.0"}, "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": 2022070002558}, "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": "July 20 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 25 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": "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": 50065.98823291945}, "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": ["Angola", "Botswana", "Namibia", "Zambia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -18.0}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[20.75, -17.0], [20.97, -16.47], [21.5, -16.25], [21.75, -16.35], [22.0, -16.25], [22.25, -16.35], [22.5, -16.25], [23.03, -16.47], [23.18, -16.82], [23.25, -16.85], [23.5, -16.75], [24.0, -16.96], [24.5, -16.75], [25.03, -16.97], [25.18, -17.32], [25.53, -17.47], [25.75, -18.0], [25.53, -18.53], [25.18, -18.68], [25.03, -19.03], [24.5, -19.25], [23.97, -19.03], [23.82, -18.68], [23.75, -18.65], [23.5, -18.75], [23.25, -18.65], [23.0, -18.75], [22.75, -18.65], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.47, -18.53], [21.32, -18.18], [20.97, -18.03], [20.75, -17.5], [20.85, -17.25], [20.75, -17.0]]]]}}, "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": {"2022-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.5, -18.75], [22.97, -18.53], [22.75, -18.0], [22.97, -17.47], [23.5, -17.25], [23.75, -17.35], [23.82, -17.32], [23.97, -16.97], [24.5, -16.75], [25.03, -16.97], [25.25, -17.5], [25.15, -17.75], [25.25, -18.0], [25.03, -18.53], [24.5, -18.75], [24.25, -18.65], [24.0, -18.75], [23.75, -18.65], [23.5, -18.75]]]]}, "2022-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -18.03], [20.75, -17.5], [20.97, -16.97], [21.32, -16.82], [21.47, -16.47], [22.0, -16.25], [22.25, -16.35], [22.5, -16.25], [23.03, -16.47], [23.18, -16.82], [23.25, -16.85], [23.5, -16.75], [24.0, -16.96], [24.5, -16.75], [25.03, -16.97], [25.18, -17.32], [25.53, -17.47], [25.75, -18.0], [25.53, -18.53], [25.18, -18.68], [25.03, -19.03], [24.5, -19.25], [23.97, -19.03], [23.82, -18.68], [23.75, -18.65], [23.5, -18.75], [23.25, -18.65], [23.0, -18.75], [22.75, -18.65], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.47, -18.53], [21.32, -18.18], [20.97, -18.03]]]]}, "2022-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.75, -17.0], [20.97, -16.47], [21.5, -16.25], [21.75, -16.35], [22.0, -16.25], [22.25, -16.35], [22.5, -16.25], [23.03, -16.47], [23.18, -16.82], [23.25, -16.85], [23.5, -16.75], [24.0, -16.96], [24.5, -16.75], [25.03, -16.97], [25.18, -17.32], [25.53, -17.47], [25.75, -18.0], [25.53, -18.53], [25.18, -18.68], [25.03, -19.03], [24.5, -19.25], [23.97, -19.03], [23.82, -18.68], [23.75, -18.65], [23.5, -18.75], [23.25, -18.65], [23.0, -18.75], [22.75, -18.65], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.47, -18.53], [21.32, -18.18], [20.97, -18.03], [20.75, -17.5], [20.85, -17.25], [20.75, -17.0]]]]}, "2022-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.75, -17.0], [20.97, -16.47], [21.5, -16.25], [21.75, -16.35], [22.0, -16.25], [22.25, -16.35], [22.5, -16.25], [23.03, -16.47], [23.18, -16.82], [23.25, -16.85], [23.5, -16.75], [24.0, -16.96], [24.5, -16.75], [25.03, -16.97], [25.18, -17.32], [25.53, -17.47], [25.75, -18.0], [25.53, -18.53], [25.18, -18.68], [25.03, -19.03], [24.5, -19.25], [23.97, -19.03], [23.82, -18.68], [23.75, -18.65], [23.5, -18.75], [23.25, -18.65], [23.0, -18.75], [22.75, -18.65], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.47, -18.53], [21.32, -18.18], [20.97, -18.03], [20.75, -17.5], [20.85, -17.25], [20.75, -17.0]]]]}, "2022-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.75, -17.0], [20.97, -16.47], [21.5, -16.25], [21.75, -16.35], [22.0, -16.25], [22.25, -16.35], [22.5, -16.25], [23.03, -16.47], [23.18, -16.82], [23.25, -16.85], [23.5, -16.75], [24.03, -16.97], [24.18, -17.32], [24.53, -17.47], [24.75, -18.0], [24.53, -18.53], [24.0, -18.75], [23.75, -18.65], [23.5, -18.75], [23.25, -18.65], [23.0, -18.75], [22.75, -18.65], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.47, -18.53], [21.32, -18.18], [20.97, -18.03], [20.75, -17.5], [20.85, -17.25], [20.75, -17.0]]]]}, "2022-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, -17.5], [21.47, -16.97], [21.82, -16.82], [21.97, -16.47], [22.5, -16.25], [23.03, -16.47], [23.18, -16.82], [23.25, -16.85], [23.5, -16.75], [24.03, -16.97], [24.18, -17.32], [24.53, -17.47], [24.75, -18.0], [24.53, -18.53], [24.0, -18.75], [23.75, -18.65], [23.5, -18.75], [22.97, -18.53], [22.82, -18.18], [22.75, -18.15], [22.68, -18.18], [22.53, -18.53], [22.0, -18.75], [21.47, -18.53], [21.25, -18.0], [21.35, -17.75], [21.25, -17.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.1590680283239294}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.6011623056996163}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.72564706682317, 20.357151352751032, 20.45219066177924, 20.32316255473853, 20.35214974123909, 20.280789010866897]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.099569331828036, 20.93078623537133, 21.091304335724885, 21.008498020983325, 21.02701623004174, 20.651638385285594]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.3081001300034814, 2.8249206752203726, 2.756802263008517, 2.5319008586711256, 2.488219239341482, 2.3001548029922674]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.4431572246026576, 3.1590680283239294, 3.0353237804258697, 2.904544771708288, 2.955590083574691, 2.5299874916390763]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4834216071138806, 1.7601286948008787, 1.683988635474173, 1.5028789795345359, 1.453101326466427, 1.3488206223145895]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5164347402467548, 1.9971034249722768, 1.849042649821504, 1.7089753211928425, 1.7672506287358063, 1.4383858520559611]}}