{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:04.886239", "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-Mar-20_to_2022-Mar-25_11.0_-2.0"}, "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": 2022030002283}, "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": "March 20 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 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": 160663.08766323724}, "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": ["Cameroon", "Equatorial Guinea", "Gabon"]}, "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": -2.0}, "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": 11.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 9.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 12.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[11.68, -1.82], [12.03, -1.97], [12.25, -2.5], [12.03, -3.03], [11.68, -3.18], [11.53, -3.53], [11.0, -3.75], [10.47, -3.53], 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"Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, -1.47], [11.0, -1.25], [11.53, -1.47], [11.75, -2.0], [11.53, -2.53], [11.0, -2.75], [10.47, -2.53], [10.25, -2.0], [10.47, -1.47]]]]}, "2022-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, -2.53], [9.25, -2.0], [9.47, -1.47], [10.0, -1.25], [10.25, -1.35], [10.5, -1.25], [10.75, -1.35], [11.0, -1.25], [11.53, -1.47], [11.75, -2.0], [11.53, -2.53], [11.0, -2.75], [10.75, -2.65], [10.5, -2.75], [10.25, -2.65], [10.0, -2.75], [9.47, -2.53]]], [[[9.0, -1.25], [8.47, -1.03], [8.25, -0.5], [8.47, 0.03], [9.0, 0.25], [9.53, 0.03], [9.75, -0.5], [9.53, -1.03], [9.0, -1.25]]]]}, "2022-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.25, 1.0], [8.35, 1.25], [8.25, 1.5], [8.47, 2.03], [9.0, 2.25], [9.25, 2.15], [9.38, 2.2], [9.25, 2.5], [9.47, 3.03], [10.0, 3.25], [10.3, 3.13], 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[10.03, -0.03], [9.5, -0.25], [9.25, -0.15], [9.0, -0.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.8878073950689327}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5526105552836016}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.087235702287956, 27.119719671691712, 26.77382495012938, 27.026870540904156, 27.365993360050084, 27.81055952914096]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.087235702287956, 27.715964517261625, 28.364233092332768, 28.526053343824913, 28.908524749051765, 28.000384418751025]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.055289406708937, 0.9696841087544925, 1.3053988656602786, 1.544801148136476, 1.8913504043464202, 0.7904364630275325]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.055289406708937, 1.1095854982808078, 1.8464655759127027, 2.2680811248002897, 2.8878073950689327, 0.8160526887024275]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3102558788172656, 1.306833365764565, 1.658990078393084, 1.9605459684312292, 2.280024689018169, 1.439909875260355]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3102558788172656, 1.409261960600396, 2.225292940378982, 2.539481957483447, 3.19789845596901, 1.5961900361286274]}}