{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:04.232963", "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": "2025-Sep-13_to_2025-Sep-22_20.0_-16.5"}, "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": 2025090001726}, "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": "September 13 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 233902.53847902338}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "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": -16.5}, "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": 20.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -15.97], [20.0, -15.75], [20.53, -15.97], [20.75, -16.5], [20.53, -17.03], [20.13, -17.2], [20.25, -17.5], [20.03, -18.03], [19.5, -18.25], [18.97, -18.03], [18.75, -17.5], [18.97, -16.97], [19.38, -16.8], [19.25, -16.5], [19.47, -15.97]]]]}, "2025-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, -18.03], [18.25, -17.5], [18.47, -16.97], [19.0, -16.75], [19.25, -16.85], [19.38, -16.8], [19.25, -16.5], [19.47, -15.97], [20.0, -15.75], [20.53, -15.97], [20.75, -16.5], [20.53, -17.03], [20.13, -17.2], [20.25, -17.5], [20.03, -18.03], [19.5, -18.25], [19.25, -18.15], [19.0, -18.25], [18.47, -18.03]]]]}, "2025-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.75, -17.0], [17.97, -16.47], [18.32, -16.32], [18.35, -16.25], [18.25, -16.0], [18.46, -15.5], [18.25, -15.0], [18.47, -14.47], [19.0, -14.25], [19.25, -14.35], [19.5, -14.25], [20.03, -14.47], [20.25, -15.0], [20.03, -15.53], [19.63, -15.7], [19.7, -15.87], [20.0, -15.75], [20.25, -15.85], [20.5, -15.75], [20.75, -15.85], [21.0, -15.75], [21.53, -15.97], [21.75, -16.5], [21.53, -17.03], [21.18, -17.18], [21.03, -17.53], [20.5, -17.75], [20.25, -17.65], [20.18, -17.68], [20.03, -18.03], [19.5, -18.25], [19.25, -18.15], [19.0, -18.25], [18.47, -18.03], [18.32, -17.68], [17.97, -17.53], [17.75, -17.0]]]]}, "2025-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.47, -14.97], [17.82, -14.82], [17.85, -14.75], [17.82, -14.68], [17.47, -14.53], [17.25, -14.0], [17.47, -13.47], [18.0, -13.25], [18.25, -13.35], [18.32, -13.32], [18.47, -12.97], [19.0, -12.75], [19.53, -12.97], [19.75, -13.5], [19.65, -13.75], [19.68, -13.82], [20.03, -13.97], [20.25, -14.5], [20.15, -14.75], [20.18, -14.82], [20.25, -14.85], [20.5, -14.75], [20.8, -14.87], [20.97, -14.47], [21.5, -14.25], [22.03, -14.47], [22.25, -15.0], [22.07, -15.43], [22.5, -15.25], [23.03, -15.47], [23.25, -16.0], [23.15, -16.25], [23.25, -16.5], [23.15, -16.75], [23.25, -17.0], [23.15, -17.25], [23.25, -17.5], [23.15, -17.75], [23.25, -18.0], [23.03, -18.53], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.75, -18.65], [21.68, -18.68], [21.53, -19.03], [21.0, -19.25], [20.47, -19.03], [20.25, -18.5], [20.35, -18.25], [20.32, -18.18], [20.25, -18.15], [20.0, -18.25], [19.5, -18.04], [19.0, -18.25], [18.75, -18.15], [18.5, -18.25], [17.97, -18.03], [17.75, -17.5], [17.85, -17.25], [17.82, -17.18], [17.47, -17.03], [17.25, -16.5], [17.46, -16.0], [17.25, -15.5], [17.47, -14.97]]]]}, "2025-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, -17.0], [16.97, -16.47], [17.32, -16.32], [17.46, -16.0], [17.25, -15.5], [17.46, -15.0], [17.25, -14.5], [17.35, -14.25], [17.25, -14.0], [17.47, -13.47], [18.0, -13.25], [18.25, -13.35], [18.32, -13.32], [18.47, -12.97], [19.0, -12.75], [19.53, -12.97], [19.75, -13.5], [19.65, -13.75], [19.68, -13.82], [20.03, -13.97], [20.18, -14.32], [20.53, -14.47], [20.68, -14.82], [20.75, -14.85], [20.82, -14.82], [20.97, -14.47], [21.5, -14.25], [22.03, -14.47], [22.25, -15.0], [22.07, -15.43], [22.5, -15.25], [23.03, -15.47], [23.25, -16.0], [23.15, -16.25], [23.25, -16.5], [23.15, -16.75], [23.25, -17.0], [23.15, -17.25], [23.25, -17.5], [23.15, -17.75], [23.25, -18.0], [23.03, -18.53], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.75, -18.65], [21.68, -18.68], [21.53, -19.03], [21.0, -19.25], [20.47, -19.03], [20.25, -18.5], [20.35, -18.25], [20.32, -18.18], [20.25, -18.15], [20.0, -18.25], [19.75, -18.15], [19.5, -18.25], [19.25, -18.15], [19.0, -18.25], [18.75, -18.15], [18.5, -18.25], [18.25, -18.15], [18.0, -18.25], [17.47, -18.03], [17.32, -17.68], [16.97, -17.53], [16.75, -17.0]]]]}, "2025-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, -17.5], [16.47, -16.97], [16.82, -16.82], [16.97, -16.47], [17.32, -16.32], [17.46, -16.0], [17.25, -15.5], [17.46, -15.0], [17.25, -14.5], [17.35, -14.25], [17.25, -14.0], [17.47, -13.47], [18.0, -13.25], [18.25, -13.35], [18.32, -13.32], [18.47, -12.97], [19.0, -12.75], [19.53, -12.97], [19.75, -13.5], [19.65, -13.75], [19.68, -13.82], [20.03, -13.97], [20.18, -14.32], [20.53, -14.47], [20.68, -14.82], [20.75, -14.85], [20.82, -14.82], [20.97, -14.47], [21.5, -14.25], [22.03, -14.47], [22.25, -15.0], [22.07, -15.43], [22.5, -15.25], [23.03, -15.47], [23.25, -16.0], [23.15, -16.25], [23.25, -16.5], [23.15, -16.75], [23.25, -17.0], [23.15, -17.25], [23.25, -17.5], [23.15, -17.75], [23.25, -18.0], [23.03, -18.53], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.75, -18.65], [21.68, -18.68], [21.53, -19.03], [21.0, -19.25], [20.5, -19.04], [20.0, -19.25], [19.75, -19.15], [19.5, -19.25], [19.25, -19.15], [19.0, -19.25], [18.75, -19.15], [18.5, -19.25], [18.25, -19.15], [18.0, -19.25], [17.47, -19.03], [17.32, -18.68], [16.97, -18.53], [16.82, -18.18], [16.47, -18.03], [16.25, -17.5]]]]}, "2025-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, -16.97], [16.82, -16.82], [16.97, -16.47], [17.32, -16.32], [17.46, -16.0], [17.25, -15.5], [17.46, -15.0], [17.25, -14.5], [17.35, -14.25], [17.25, -14.0], [17.47, -13.47], [18.0, -13.25], [18.25, -13.35], [18.5, -13.25], [19.03, -13.47], [19.25, -14.0], [19.13, -14.3], [19.5, -14.46], [20.0, -14.25], [20.53, -14.47], [20.68, -14.82], [20.75, -14.85], [20.82, -14.82], [20.97, -14.47], [21.5, -14.25], [22.03, -14.47], [22.25, -15.0], [22.07, -15.43], [22.5, -15.25], [23.03, -15.47], [23.25, -16.0], [23.15, -16.25], [23.25, -16.5], [23.15, -16.75], [23.25, -17.0], [23.15, -17.25], [23.25, -17.5], [23.15, -17.75], [23.25, -18.0], [23.03, -18.53], [22.5, -18.75], [22.25, -18.65], [22.0, -18.75], [21.75, -18.65], [21.68, -18.68], [21.53, -19.03], [21.0, -19.25], [20.5, -19.04], [20.0, -19.25], [19.75, -19.15], [19.5, -19.25], [19.25, -19.15], [19.0, -19.25], [18.75, -19.15], [18.68, -19.18], [18.53, -19.53], [18.0, -19.75], [17.47, -19.53], [17.25, -19.0], [17.35, -18.75], [17.32, -18.68], [17.25, -18.65], [17.0, -18.75], [16.47, -18.53], [16.25, -18.0], [16.35, -17.75], [16.25, -17.5], [16.47, -16.97]]]]}, "2025-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, -16.97], [16.82, -16.82], [16.97, -16.47], [17.32, -16.32], [17.46, -16.0], [17.25, -15.5], [17.46, -15.0], [17.25, -14.5], [17.47, -13.97], [18.0, -13.75], [18.53, -13.97], [18.68, -14.32], [18.75, -14.35], [19.0, -14.25], [19.5, -14.46], [20.0, -14.25], [20.53, -14.47], [20.68, -14.82], [21.03, -14.97], [21.18, -15.32], [21.53, -15.47], [21.75, -16.0], [21.65, -16.25], [21.75, -16.5], [21.53, -17.03], [21.0, -17.25], [20.75, -17.15], [20.68, -17.18], [20.65, -17.25], [20.75, -17.5], [20.65, -17.75], [20.75, -18.0], [20.65, -18.25], [20.75, -18.5], [20.53, -19.03], [20.0, -19.25], [19.75, -19.15], [19.5, -19.25], [19.25, -19.15], [19.0, -19.25], [18.75, -19.15], [18.68, -19.18], [18.53, -19.53], [18.0, -19.75], [17.47, -19.53], [17.25, -19.0], [17.35, -18.75], [17.32, -18.68], [17.25, -18.65], [17.0, -18.75], [16.47, -18.53], [16.25, -18.0], [16.35, -17.75], [16.25, -17.5], [16.47, -16.97]]]]}, "2025-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, -16.97], [17.0, -16.75], [17.25, -16.85], [17.32, -16.82], [17.47, -16.47], [17.82, -16.32], [17.96, -16.0], [17.75, -15.5], [17.97, -14.97], [18.32, -14.82], [18.47, -14.47], [19.0, -14.25], [19.5, -14.46], [20.0, -14.25], [20.53, -14.47], [20.75, -15.0], [20.65, -15.25], [20.68, -15.32], [20.75, -15.35], [21.0, -15.25], [21.53, -15.47], [21.75, -16.0], [21.53, -16.53], [21.18, -16.68], [21.03, -17.03], [20.68, -17.18], [20.65, -17.25], [20.75, -17.5], [20.65, -17.75], [20.75, -18.0], [20.53, -18.53], [20.0, -18.75], [19.75, -18.65], [19.68, -18.68], [19.53, -19.03], [19.0, -19.25], [18.7, -19.12], [18.53, -19.53], [18.0, -19.75], [17.47, -19.53], [17.25, -19.0], [17.35, -18.75], [17.3, -18.62], [17.0, -18.75], [16.47, -18.53], [16.25, -18.0], [16.35, -17.75], [16.25, -17.5], [16.47, -16.97]]]]}, "2025-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.5, -15.25], [21.03, -15.47], [21.25, -16.0], [21.03, -16.53], [20.5, -16.75], [19.97, -16.53], [19.75, -16.0], [19.97, -15.47], [20.5, -15.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.194934152563121}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.7544137621725846}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.26161346435549, 27.245590888129357, 27.335100966233483, 27.688306608654273, 27.96355209350594, 28.071623969800612, 28.388599214597377, 28.28199663746119, 28.028786259071524, 27.696956888834677]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.320736185709677, 27.52901102701827, 27.79277699788412, 29.12883656819662, 29.161879475911462, 29.625830586751306, 29.822578684488974, 29.057935333251976, 28.723533884684286, 27.696956888834677]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.663121055150526, 2.440671130710617, 2.5362678650172064, 2.7978475484592207, 2.873455585020535, 2.8014123382257714, 2.890644600338981, 2.6958425731984623, 2.2822669455056643, 2.0223935234662918]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.002203987900657, 2.552172860263113, 2.9158395064200135, 4.126275241780377, 3.674029684923994, 3.7927759739992553, 4.194934152563121, 3.307369913224761, 2.731385576907485, 2.0223935234662918]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4718866279563763, 1.327219754906598, 1.427307538699586, 1.6002564945724171, 1.6707194454839032, 1.6151022904079158, 1.68201555231883, 1.589739082889214, 1.3550751137749462, 1.3361290807098654]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7153294954901288, 1.3635867922823677, 1.689902146739012, 2.350165357920483, 2.2154732670304726, 2.148204721223677, 2.3854004703469727, 2.06100139643924, 1.6661095562165877, 1.3361290807098654]}}