{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:04.999244", "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": "2021-Aug-13_to_2021-Aug-22_42.5_12.5"}, "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": 2021080002112}, "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": "August 13 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 22 2021"}, "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": 151140.94945748796}, "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": ["Djibouti", "Eritrea", "Ethiopia", "Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "N.Eastern-Africa", "Sahara"]}, "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": ["Red Sea"]}, "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": 12.5}, "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": 42.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 43.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, 12.5], [39.97, 13.03], [40.5, 13.25], [41.03, 13.03], [41.18, 12.68], [41.25, 12.65], [41.5, 12.75], [42.03, 12.53], [42.25, 12.0], [42.03, 11.47], [41.5, 11.25], [41.25, 11.35], [41.0, 11.25], [40.47, 11.47], [40.32, 11.82], [39.97, 11.97], [39.75, 12.5]]]]}, "2021-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, 12.5], [39.97, 13.03], [40.5, 13.25], [41.0, 13.04], [41.32, 13.18], [41.47, 13.53], [42.0, 13.75], [42.53, 13.53], [42.68, 13.18], [43.03, 13.03], [43.25, 12.5], [43.15, 12.25], [43.25, 12.0], [43.15, 11.75], [43.25, 11.5], [43.15, 11.25], [43.25, 11.0], [43.03, 10.47], [42.5, 10.25], [42.25, 10.35], [42.0, 10.25], [41.47, 10.47], [41.25, 11.0], [41.38, 11.3], [41.25, 11.35], [41.0, 11.25], [40.47, 11.47], [40.32, 11.82], [39.97, 11.97], [39.75, 12.5]]]]}, "2021-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 13.03], [40.5, 13.25], [41.0, 13.04], [41.32, 13.18], [41.47, 13.53], [42.0, 13.75], [42.25, 13.65], [42.5, 13.75], [43.03, 13.53], [43.25, 13.0], [43.15, 12.75], [43.25, 12.5], [43.15, 12.25], [43.25, 12.0], [43.15, 11.75], [43.18, 11.68], [43.53, 11.53], [43.75, 11.0], [43.53, 10.47], [43.0, 10.25], [42.75, 10.35], [42.5, 10.25], [42.25, 10.35], [42.0, 10.25], [41.47, 10.47], [41.25, 11.0], [41.38, 11.3], [41.25, 11.35], [41.0, 11.25], [40.47, 11.47], [40.32, 11.82], [39.97, 11.97], [39.75, 12.5], [39.97, 13.03]]], [[[40.97, 13.97], [40.75, 14.5], [40.97, 15.03], [41.5, 15.25], [42.03, 15.03], [42.25, 14.5], [42.03, 13.97], [41.5, 13.75], [40.97, 13.97]]]]}, "2021-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 13.5], [39.47, 14.03], [40.0, 14.25], [40.5, 14.04], [40.88, 14.2], [40.75, 14.5], [40.97, 15.03], [41.5, 15.25], [42.03, 15.03], [42.18, 14.68], [42.53, 14.53], [42.75, 14.0], [42.63, 13.7], [43.03, 13.53], [43.25, 13.0], [43.15, 12.75], [43.25, 12.5], [43.15, 12.25], [43.25, 12.0], [43.15, 11.75], [43.18, 11.68], [43.53, 11.53], [43.75, 11.0], [43.53, 10.47], [43.0, 10.25], [42.75, 10.35], [42.5, 10.25], [42.25, 10.35], [42.0, 10.25], [41.47, 10.47], [41.25, 11.0], [41.38, 11.3], [41.25, 11.35], [41.0, 11.25], [40.47, 11.47], [40.32, 11.82], [39.97, 11.97], [39.75, 12.5], [39.88, 12.8], [39.47, 12.97], [39.25, 13.5]]]]}, "2021-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.97, 7.97], [38.75, 8.5], [38.97, 9.03], [39.5, 9.25], [40.03, 9.03], [40.25, 8.5], [40.03, 7.97], [39.5, 7.75], [38.97, 7.97]]], [[[42.25, 11.0], [42.47, 11.53], [43.0, 11.75], [43.53, 11.53], [43.75, 11.0], [43.53, 10.47], [43.0, 10.25], [42.47, 10.47], [42.25, 11.0]]], [[[40.0, 14.25], [40.5, 14.04], [40.82, 14.18], [40.85, 14.25], [40.75, 14.5], [40.97, 15.03], [41.38, 15.2], [41.25, 15.5], [41.47, 16.03], [42.0, 16.25], [42.53, 16.03], [42.75, 15.5], [42.54, 15.0], [42.75, 14.5], [42.65, 14.25], [42.75, 14.0], [42.63, 13.7], [43.03, 13.53], [43.25, 13.0], [43.15, 12.75], [43.25, 12.5], [43.03, 11.97], [42.5, 11.75], [42.25, 11.85], [42.0, 11.75], [41.75, 11.85], [41.5, 11.75], [41.0, 11.96], [40.5, 11.75], [39.97, 11.97], [39.75, 12.5], [39.88, 12.8], [39.47, 12.97], [39.25, 13.5], [39.47, 14.03], [40.0, 14.25]]]]}, "2021-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 9.5], [39.47, 10.03], [39.82, 10.18], [39.85, 10.25], [39.75, 10.5], [39.85, 10.75], [39.75, 11.0], [39.85, 11.25], [39.82, 11.32], [39.47, 11.47], [39.25, 12.0], [39.47, 12.53], [39.82, 12.68], [39.85, 12.75], [39.82, 12.82], [39.47, 12.97], [39.25, 13.5], [39.47, 14.03], [40.0, 14.25], [40.5, 14.04], [40.82, 14.18], [40.97, 14.53], [41.32, 14.68], [41.46, 15.0], [41.25, 15.5], [41.47, 16.03], [42.0, 16.25], [42.53, 16.03], [42.75, 15.5], [42.54, 15.0], [42.75, 14.5], [42.65, 14.25], [42.75, 14.0], [42.54, 13.5], [42.68, 13.18], [43.03, 13.03], [43.25, 12.5], [43.04, 12.0], [43.18, 11.68], [43.53, 11.53], [43.75, 11.0], [43.53, 10.47], [43.18, 10.32], [43.03, 9.97], [42.68, 9.82], [42.53, 9.47], [42.0, 9.25], [41.75, 9.35], [41.5, 9.25], [41.25, 9.35], [41.0, 9.25], [40.75, 9.35], [40.68, 9.32], [40.65, 9.25], [40.75, 9.0], [40.53, 8.47], [40.18, 8.32], [40.03, 7.97], [39.5, 7.75], [38.97, 7.97], [38.75, 8.5], [38.97, 9.03], [39.32, 9.18], [39.35, 9.25], [39.25, 9.5]]]]}, "2021-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 9.5], [39.47, 10.03], [39.82, 10.18], [39.85, 10.25], [39.75, 10.5], [39.85, 10.75], [39.75, 11.0], [39.85, 11.25], [39.82, 11.32], [39.47, 11.47], [39.25, 12.0], [39.47, 12.53], [39.82, 12.68], [39.85, 12.75], [39.75, 13.0], [39.97, 13.53], [40.32, 13.68], [40.47, 14.03], [40.82, 14.18], [40.85, 14.25], [40.75, 14.5], [40.85, 14.75], [40.75, 15.0], [40.97, 15.53], [41.32, 15.68], [41.47, 16.03], [42.0, 16.25], [42.53, 16.03], [42.75, 15.5], [42.65, 15.25], [42.75, 15.0], [42.65, 14.75], [42.75, 14.5], [42.53, 13.97], [42.18, 13.82], [42.15, 13.75], [42.18, 13.68], [42.53, 13.53], [42.68, 13.18], [43.03, 13.03], [43.25, 12.5], [43.04, 12.0], [43.18, 11.68], [43.53, 11.53], [43.75, 11.0], [43.53, 10.47], [43.18, 10.32], [43.03, 9.97], [42.68, 9.82], [42.53, 9.47], [42.0, 9.25], [41.75, 9.35], [41.5, 9.25], [41.25, 9.35], [41.0, 9.25], [40.75, 9.35], [40.68, 9.32], [40.65, 9.25], [40.75, 9.0], [40.53, 8.47], [40.18, 8.32], [40.03, 7.97], [39.5, 7.75], [38.97, 7.97], [38.75, 8.5], [38.97, 9.03], [39.32, 9.18], [39.35, 9.25], [39.25, 9.5]]]]}, "2021-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 9.5], [39.47, 10.03], [39.82, 10.18], [39.85, 10.25], [39.75, 10.5], [39.85, 10.75], [39.75, 11.0], [39.85, 11.25], [39.82, 11.32], [39.47, 11.47], [39.25, 12.0], [39.47, 12.53], [39.82, 12.68], [39.85, 12.75], [39.75, 13.0], [39.97, 13.53], [40.32, 13.68], [40.47, 14.03], [40.82, 14.18], [40.85, 14.25], [40.75, 14.5], [40.85, 14.75], [40.75, 15.0], [40.97, 15.53], [41.5, 15.75], [41.75, 15.65], [42.0, 15.75], [42.53, 15.53], [42.75, 15.0], [42.65, 14.75], [42.75, 14.5], [42.53, 13.97], [42.18, 13.82], [42.15, 13.75], [42.18, 13.68], [42.53, 13.53], [42.68, 13.18], [42.75, 13.15], [43.0, 13.25], [43.53, 13.03], [43.75, 12.5], [43.53, 11.97], [43.13, 11.8], [43.18, 11.68], [43.53, 11.53], [43.75, 11.0], [43.53, 10.47], [43.18, 10.32], [43.03, 9.97], [42.68, 9.82], [42.53, 9.47], [42.0, 9.25], [41.75, 9.35], [41.5, 9.25], [41.25, 9.35], [41.0, 9.25], [40.75, 9.35], [40.68, 9.32], [40.65, 9.25], [40.75, 9.0], [40.53, 8.47], [40.18, 8.32], [40.03, 7.97], [39.5, 7.75], [38.97, 7.97], [38.75, 8.5], [38.97, 9.03], [39.32, 9.18], [39.35, 9.25], [39.25, 9.5]]]]}, "2021-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 9.5], [39.47, 10.03], [39.82, 10.18], [39.97, 10.53], [40.5, 10.75], [41.0, 10.54], [41.38, 10.7], [41.25, 11.0], [41.46, 11.5], [41.25, 12.0], [41.35, 12.25], [41.3, 12.38], [41.0, 12.25], [40.57, 12.43], [40.75, 12.0], [40.53, 11.47], [40.0, 11.25], [39.47, 11.47], [39.25, 12.0], [39.47, 12.53], [40.0, 12.75], [40.43, 12.57], [40.25, 13.0], [40.47, 13.53], [40.82, 13.68], [40.85, 13.75], [40.75, 14.0], [40.85, 14.25], [40.75, 14.5], [40.85, 14.75], [40.75, 15.0], [40.97, 15.53], [41.5, 15.75], [41.75, 15.65], [42.0, 15.75], [42.53, 15.53], [42.75, 15.0], [42.65, 14.75], [42.75, 14.5], [42.53, 13.97], [42.18, 13.82], [42.15, 13.75], [42.18, 13.68], [42.53, 13.53], [42.68, 13.18], [42.75, 13.15], [43.0, 13.25], [43.53, 13.03], [43.75, 12.5], [43.53, 11.97], [43.0, 11.75], [43.53, 11.53], [43.75, 11.0], [43.53, 10.47], [43.0, 10.25], [42.57, 10.43], [42.75, 10.0], [42.53, 9.47], [42.0, 9.25], [41.75, 9.35], [41.5, 9.25], [41.0, 9.46], [40.68, 9.32], [40.65, 9.25], [40.75, 9.0], [40.53, 8.47], [40.18, 8.32], [40.03, 7.97], [39.5, 7.75], [38.97, 7.97], [38.75, 8.5], [38.97, 9.03], [39.32, 9.18], [39.35, 9.25], [39.25, 9.5]], [[42.75, 11.85], [42.68, 11.82], [42.57, 11.57], [43.0, 11.75], [42.75, 11.85]]]]}, "2021-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.25, 13.0], [41.47, 13.53], [42.0, 13.75], [42.53, 13.53], [42.68, 13.18], [42.75, 13.15], [43.0, 13.25], [43.53, 13.03], [43.75, 12.5], [43.53, 11.97], [43.0, 11.75], [42.75, 11.85], [42.5, 11.75], [41.97, 11.97], [41.82, 12.32], [41.47, 12.47], [41.25, 13.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.191185951418163}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.3986338080452967}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.35201240521201, 34.92565766996671, 34.518592777380036, 34.32117010985178, 33.22977804345686, 33.56664558768813, 33.70995733673351, 34.00115420269839, 32.630311849251996, 33.92954832855327]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.923803390396586, 36.74132956485806, 35.766522202512135, 36.96637126451168, 37.33565405356285, 38.1709403621598, 38.22334075791997, 38.346221685992475, 38.08957974767435, 34.48859255079975]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.998943022455402, 3.054994901513112, 2.447931341897166, 2.2099988210427086, 1.6861218379743725, 2.4750475880221035, 2.4754333103780053, 2.7149851427414093, 1.7407494452052918, 1.617800071125335]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.271600035453048, 4.191185951418163, 3.3136243100494767, 2.9239221804433555, 2.5741707362590773, 3.894805563685509, 4.1884695848989395, 4.166907312489229, 2.4818830728292482, 1.966723276577909]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2990035288892319, 1.4555861515123019, 1.3176230674997396, 1.2922426463026804, 1.4314259655842307, 1.4471580482655546, 1.4664187360032948, 1.6048697343816731, 1.4136423332497645, 1.0712991927818472]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3746726090397623, 1.767281797225666, 1.4896189872121355, 1.578414570821615, 2.5306776493003373, 2.2167443826578084, 2.2835692756290014, 2.2723065231562005, 1.814991488338608, 1.1569767664450854]}}