{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:20.418124", "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-19_to_2022-Jun-25_22.0_-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": 2022060002457}, "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 19 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 25 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 133679.28896660556}, "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": 22.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.0}, "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": -14.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[22.75, -18.5], [22.53, -19.03], [22.0, -19.25], [21.47, -19.03], [21.32, -18.68], [20.97, -18.53], [20.82, -18.18], [20.5, -18.04], [20.0, -18.25], [19.47, -18.03], [19.25, -17.5], [19.35, -17.25], [19.25, -17.0], [19.35, -16.75], [19.25, -16.5], [19.35, -16.25], [19.25, -16.0], [19.35, -15.75], [19.32, -15.68], [18.97, -15.53], [18.75, -15.0], [18.85, -14.75], [18.82, -14.68], [18.47, -14.53], [18.25, -14.0], [18.47, -13.47], [19.0, -13.25], [19.25, -13.35], [19.5, -13.25], [19.75, -13.35], [20.0, -13.25], [20.25, -13.35], [20.5, -13.25], [20.75, -13.35], [21.0, -13.25], [21.53, -13.47], [21.75, -14.0], [21.65, -14.25], [21.68, -14.32], [22.03, -14.47], [22.25, -15.0], [22.15, -15.25], [22.18, -15.32], [22.25, -15.35], [22.5, -15.25], [22.75, -15.35], [23.0, -15.25], [23.53, -15.47], [23.75, -16.0], [23.65, -16.25], [23.75, -16.5], [23.53, -17.03], [23.18, -17.18], [23.15, -17.25], [23.25, -17.5], [23.03, -18.03], [22.68, -18.18], [22.65, -18.25], [22.75, -18.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, -14.53], [20.25, -14.0], [20.47, -13.47], [21.0, -13.25], [21.53, -13.47], [21.75, -14.0], [21.63, -14.3], [22.03, -14.47], [22.25, -15.0], [22.03, -15.53], [21.5, -15.75], [20.97, -15.53], [20.75, -15.0], [20.88, -14.7], [20.47, -14.53]]]]}, "2022-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, -15.53], [18.75, -15.0], [18.97, -14.47], [19.5, -14.25], [19.75, -14.35], [19.82, -14.32], [19.97, -13.97], [20.32, -13.82], [20.47, -13.47], [21.0, -13.25], [21.53, -13.47], [21.75, -14.0], [21.65, -14.25], [21.68, -14.32], [22.03, -14.47], [22.25, -15.0], [22.15, -15.25], [22.18, -15.32], [22.5, -15.46], [23.0, -15.25], [23.53, -15.47], [23.75, -16.0], [23.65, -16.25], [23.75, -16.5], [23.53, -17.03], [23.18, -17.18], [23.15, -17.25], [23.25, -17.5], [23.03, -18.03], [22.68, -18.18], [22.65, -18.25], [22.75, -18.5], [22.53, -19.03], [22.0, -19.25], [21.47, -19.03], [21.32, -18.68], [20.97, -18.53], [20.75, -18.0], [20.85, -17.75], [20.75, -17.5], [20.85, -17.25], [20.82, -17.18], [20.75, -17.15], [20.5, -17.25], [19.97, -17.03], [19.82, -16.68], [19.47, -16.53], [19.25, -16.0], [19.35, -15.75], [19.32, -15.68], [18.97, -15.53]]]]}, "2022-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, -14.53], [18.25, -14.0], [18.47, -13.47], [19.0, -13.25], [19.25, -13.35], [19.5, -13.25], [19.75, -13.35], [20.0, -13.25], [20.25, -13.35], [20.5, -13.25], [20.75, -13.35], [21.0, -13.25], [21.53, -13.47], [21.75, -14.0], [21.65, -14.25], [21.68, -14.32], [22.03, -14.47], [22.25, -15.0], [22.15, -15.25], [22.18, -15.32], [22.25, -15.35], [22.5, -15.25], [22.75, -15.35], [23.0, -15.25], [23.53, -15.47], [23.75, -16.0], [23.65, -16.25], [23.75, -16.5], [23.53, -17.03], [23.18, -17.18], [23.15, -17.25], [23.25, -17.5], [23.03, -18.03], [22.68, -18.18], [22.65, -18.25], [22.75, -18.5], [22.53, -19.03], [22.0, -19.25], [21.47, -19.03], [21.32, -18.68], [20.97, -18.53], [20.75, -18.0], [20.85, -17.75], [20.75, -17.5], [20.85, -17.25], [20.82, -17.18], [20.75, -17.15], [20.5, -17.25], [19.97, -17.03], [19.82, -16.68], [19.47, -16.53], [19.25, -16.0], [19.35, -15.75], [19.32, -15.68], [18.97, -15.53], [18.75, -15.0], [18.85, -14.75], [18.82, -14.68], [18.47, -14.53]]]]}, "2022-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, -14.53], [18.25, -14.0], [18.47, -13.47], [19.0, -13.25], [19.25, -13.35], [19.5, -13.25], [19.75, -13.35], [20.0, -13.25], [20.25, -13.35], [20.5, -13.25], [21.03, -13.47], [21.18, -13.82], [21.53, -13.97], [21.68, -14.32], [22.03, -14.47], [22.25, -15.0], [22.15, -15.25], [22.18, -15.32], [22.25, -15.35], [22.5, -15.25], [22.75, -15.35], [23.0, -15.25], [23.53, -15.47], [23.75, -16.0], [23.65, -16.25], [23.75, -16.5], [23.53, -17.03], [23.18, -17.18], [23.15, -17.25], [23.25, -17.5], [23.03, -18.03], [22.68, -18.18], [22.65, -18.25], [22.75, -18.5], [22.53, -19.03], [22.0, -19.25], [21.47, -19.03], [21.32, -18.68], [20.97, -18.53], [20.82, -18.18], [20.47, -18.03], [20.32, -17.68], [19.97, -17.53], [19.82, -17.18], [19.47, -17.03], [19.25, -16.5], [19.35, -16.25], [19.25, -16.0], [19.35, -15.75], [19.32, -15.68], [18.97, -15.53], [18.75, -15.0], [18.85, -14.75], [18.82, -14.68], [18.47, -14.53]]]]}, "2022-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, -14.53], [18.25, -14.0], [18.47, -13.47], [19.0, -13.25], [19.25, -13.35], [19.5, -13.25], [19.75, -13.35], [20.0, -13.25], [20.25, -13.35], [20.5, -13.25], [21.03, -13.47], [21.18, -13.82], [21.53, -13.97], [21.68, -14.32], [22.03, -14.47], [22.25, -15.0], [22.15, -15.25], [22.18, -15.32], [22.25, -15.35], [22.5, -15.25], [22.75, -15.35], [23.0, -15.25], [23.53, -15.47], [23.75, -16.0], [23.53, -16.53], [23.18, -16.68], [23.15, -16.75], [23.25, -17.0], [23.15, -17.25], [23.25, -17.5], [23.03, -18.03], [22.68, -18.18], [22.65, -18.25], [22.75, -18.5], [22.53, -19.03], [22.0, -19.25], [21.47, -19.03], [21.32, -18.68], [20.97, -18.53], [20.82, -18.18], [20.5, -18.04], [20.0, -18.25], [19.47, -18.03], [19.25, -17.5], [19.35, -17.25], [19.25, -17.0], [19.35, -16.75], [19.25, -16.5], [19.35, -16.25], [19.25, -16.0], [19.35, -15.75], [19.32, -15.68], [18.97, -15.53], [18.75, -15.0], [18.85, -14.75], [18.82, -14.68], [18.47, -14.53]]]]}, "2022-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, -14.0], [18.97, -13.47], [19.5, -13.25], [19.75, -13.35], [20.0, -13.25], [20.53, -13.47], [20.75, -14.0], [20.65, -14.25], [20.68, -14.32], [20.75, -14.35], [21.0, -14.25], [21.53, -14.47], [21.75, -15.0], [21.65, -15.25], [21.75, -15.5], [21.65, -15.75], [21.7, -15.87], [22.0, -15.75], [22.53, -15.97], [22.68, -16.32], [23.03, -16.47], [23.25, -17.0], [23.15, -17.25], [23.25, -17.5], [23.03, -18.03], [22.68, -18.18], [22.65, -18.25], [22.75, -18.5], [22.53, -19.03], [22.0, -19.25], [21.47, -19.03], [21.32, -18.68], [20.97, -18.53], [20.82, -18.18], [20.5, -18.04], [20.0, -18.25], [19.47, -18.03], [19.25, -17.5], [19.35, -17.25], [19.25, -17.0], [19.35, -16.75], [19.25, -16.5], [19.35, -16.25], [19.25, -16.0], [19.47, -15.47], [19.82, -15.32], [19.85, -15.25], [19.82, -15.18], [19.75, -15.15], [19.5, -15.25], [18.97, -15.03], [18.75, -14.5], [18.85, -14.25], [18.75, -14.0]]]]}, "2022-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.0, -18.75], [21.47, -18.53], [21.25, -18.0], [21.47, -17.47], [22.0, -17.25], [22.53, -17.47], [22.75, -18.0], [22.53, -18.53], [22.0, -18.75]]], [[[19.47, -16.47], [20.0, -16.25], [20.25, -16.35], [20.5, -16.25], [21.03, -16.47], [21.25, -17.0], [21.03, -17.53], [20.68, -17.68], [20.53, -18.03], [20.0, -18.25], [19.47, -18.03], [19.25, -17.5], [19.35, -17.25], [19.25, -17.0], [19.47, -16.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.6012280627390396}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.531813365737351}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.498489755845924, 20.438526265359997, 20.155643409592926, 19.926902711404523, 20.1284716707043, 19.890511556200522, 19.23907847902842]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.59168123624164, 20.970532495179953, 21.19444170299556, 20.92528255074336, 21.136709015266035, 20.590745030494645, 19.347151729943505]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.1330804590384673, 2.758637464340893, 2.5121443330237194, 2.3476085683478476, 2.601349681448259, 2.540637285998816, 2.231021656018285]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2108673805914805, 3.6012280627390396, 3.0767005587412655, 2.8181301755460026, 3.1777128820502867, 3.331595011624472, 2.4019301941216327]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4741095789539556, 1.8040229001858201, 1.6768895890292623, 1.5668603747792584, 1.672460079719892, 1.562451126855772, 1.301997066179359]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5058796553019622, 2.29902167371643, 2.0554928729289363, 1.8934343978326287, 2.0947721010729596, 2.057486105356956, 1.39614584873854]}}