{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:38.314729", "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": "2020-May-22_to_2020-May-28_10.5_16.0"}, "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": 2020050002492}, "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": "May 22 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 28 2020"}, "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": 174820.89439230383}, "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": ["Chad", "Niger"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 16.0}, "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": 10.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "10.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 8.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[9.0, 13.75], [8.47, 13.97], [8.25, 14.5], [8.375, 14.802], [8.25, 14.854], [8.0, 14.75], [7.47, 14.97], [7.25, 15.5], [7.47, 16.03], [7.823, 16.177], [7.97, 16.53], [8.5, 16.75], [9.0, 16.543], [9.323, 16.677], [9.47, 17.03], [9.823, 17.177], [9.854, 17.25], [9.75, 17.5], [9.97, 18.03], [10.323, 18.177], [10.47, 18.53], [11.0, 18.75], [11.53, 18.53], [11.75, 18.0], [11.646, 17.75], [11.677, 17.677], [11.75, 17.646], [11.823, 17.677], [11.97, 18.03], [12.5, 18.25], [12.802, 18.125], [12.97, 18.53], [13.5, 18.75], [14.03, 18.53], [14.177, 18.177], [14.25, 18.146], [14.5, 18.25], [14.75, 18.146], [14.823, 18.177], [14.97, 18.53], [15.5, 18.75], [15.75, 18.646], [16.0, 18.75], [16.25, 18.646], [16.5, 18.75], [17.03, 18.53], [17.25, 18.0], [17.03, 17.47], [16.677, 17.323], [16.646, 17.25], [16.75, 17.0], [16.646, 16.75], [16.75, 16.5], [16.646, 16.25], [16.677, 16.177], [17.03, 16.03], [17.25, 15.5], [17.03, 14.97], [16.677, 14.823], [16.53, 14.47], [16.0, 14.25], [15.47, 14.47], [15.323, 14.823], [15.25, 14.854], [15.0, 14.75], [14.75, 14.854], [14.5, 14.75], [13.97, 14.97], [13.823, 15.323], [13.47, 15.47], [13.323, 15.823], [12.97, 15.97], [12.823, 16.323], [12.774, 16.344], [12.751, 16.354], [12.75, 16.354], [12.677, 16.323], [12.53, 15.97], [12.0, 15.75], [11.75, 15.854], [11.677, 15.823], [11.53, 15.47], [11.0, 15.25], [10.75, 15.354], [10.677, 15.323], [10.53, 14.97], [10.177, 14.823], [10.03, 14.47], [9.677, 14.323], [9.53, 13.97], [9.0, 13.75]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa", "Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-22T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[12.25, 17.0], [12.469669914110089, 17.53033008588991], [13.0, 17.75], [13.530330085889911, 17.53033008588991], [13.75, 17.0], [13.530330085889911, 16.46966991411009], [13.0, 16.25], [12.469669914110089, 16.46966991411009], [12.25, 17.0]]]}, "2020-05-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[9.323223304703363, 15.323223304703363], [8.969669914110089, 15.469669914110089], [8.75, 16.0], [8.969669914110089, 16.53033008588991], [9.323223304703363, 16.67677669529664], [9.469669914110089, 17.03033008588991], [9.823223304703363, 17.17677669529664], [9.853553390593273, 17.25], [9.75, 17.5], [9.969669914110089, 18.03033008588991], [10.323223304703363, 18.17677669529664], [10.469669914110089, 18.53033008588991], [11.0, 18.75], [11.530330085889911, 18.53033008588991], [11.75, 18.0], [11.646446609406727, 17.75], [11.676776695296637, 17.67677669529664], [11.75, 17.646446609406727], [11.823223304703363, 17.67677669529664], [11.969669914110089, 18.03033008588991], [12.5, 18.25], [12.801776695296637, 18.125], [12.969669914110089, 18.53033008588991], [13.5, 18.75], [14.030330085889911, 18.53033008588991], [14.176776695296637, 18.17677669529664], [14.25, 18.146446609406727], [14.5, 18.25], [14.75, 18.146446609406727], [14.823223304703363, 18.17677669529664], [14.969669914110089, 18.53033008588991], [15.5, 18.75], [15.75, 18.646446609406727], [16.0, 18.75], [16.25, 18.646446609406727], [16.5, 18.75], [17.03033008588991, 18.53033008588991], [17.25, 18.0], [17.03033008588991, 17.46966991411009], [16.67677669529664, 17.32322330470336], [16.646446609406727, 17.25], [16.75, 17.0], [16.646446609406727, 16.75], [16.75, 16.5], [16.646446609406727, 16.25], [16.67677669529664, 16.17677669529664], [17.03033008588991, 16.03033008588991], [17.25, 15.5], [17.03033008588991, 14.969669914110089], [16.67677669529664, 14.823223304703363], [16.53033008588991, 14.469669914110089], [16.0, 14.25], [15.469669914110089, 14.469669914110089], [15.323223304703363, 14.823223304703363], [15.25, 14.853553390593273], [15.0, 14.75], [14.75, 14.853553390593273], [14.5, 14.75], [13.969669914110089, 14.969669914110089], [13.823223304703363, 15.323223304703363], [13.469669914110089, 15.469669914110089], [13.323223304703363, 15.823223304703363], [12.969669914110089, 15.969669914110089], [12.823223304703363, 16.32322330470336], [12.75, 16.353553390593273], [12.676776695296637, 16.32322330470336], [12.530330085889911, 15.969669914110089], [12.0, 15.75], [11.75, 15.853553390593273], [11.676776695296637, 15.823223304703363], [11.530330085889911, 15.469669914110089], [11.0, 15.25], [10.75, 15.353553390593273], [10.676776695296637, 15.323223304703363], [10.530330085889911, 14.969669914110089], [10.0, 14.75], [9.469669914110089, 14.969669914110089], [9.323223304703363, 15.323223304703363]]]}, "2020-05-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[8.957106781186546, 15.5], [8.75, 16.0], [8.969669914110089, 16.53033008588991], [9.323223304703363, 16.67677669529664], [9.469669914110089, 17.03033008588991], [9.823223304703363, 17.17677669529664], [9.853553390593273, 17.25], [9.75, 17.5], [9.969669914110089, 18.03033008588991], [10.323223304703363, 18.17677669529664], [10.469669914110089, 18.53033008588991], [11.0, 18.75], [11.530330085889911, 18.53033008588991], [11.75, 18.0], [11.646446609406727, 17.75], [11.676776695296637, 17.67677669529664], [11.75, 17.646446609406727], [11.823223304703363, 17.67677669529664], [11.969669914110089, 18.03033008588991], [12.5, 18.25], [12.801776695296637, 18.125], [12.969669914110089, 18.53033008588991], [13.5, 18.75], [14.030330085889911, 18.53033008588991], [14.176776695296637, 18.17677669529664], [14.25, 18.146446609406727], [14.5, 18.25], [14.75, 18.146446609406727], [14.823223304703363, 18.17677669529664], [14.969669914110089, 18.53033008588991], [15.5, 18.75], [15.75, 18.646446609406727], [16.0, 18.75], [16.25, 18.646446609406727], [16.5, 18.75], [17.03033008588991, 18.53033008588991], [17.25, 18.0], [17.03033008588991, 17.46966991411009], [16.67677669529664, 17.32322330470336], [16.646446609406727, 17.25], [16.75, 17.0], [16.646446609406727, 16.75], [16.75, 16.5], [16.646446609406727, 16.25], [16.67677669529664, 16.17677669529664], [17.03033008588991, 16.03033008588991], [17.25, 15.5], [17.03033008588991, 14.969669914110089], [16.67677669529664, 14.823223304703363], [16.53033008588991, 14.469669914110089], [16.0, 14.25], [15.469669914110089, 14.469669914110089], [15.323223304703363, 14.823223304703363], [15.25, 14.853553390593273], [15.0, 14.75], [14.75, 14.853553390593273], [14.5, 14.75], [13.969669914110089, 14.969669914110089], [13.823223304703363, 15.323223304703363], [13.469669914110089, 15.469669914110089], [13.323223304703363, 15.823223304703363], [12.969669914110089, 15.969669914110089], [12.823223304703363, 16.32322330470336], [12.75, 16.353553390593273], [12.676776695296637, 16.32322330470336], [12.530330085889911, 15.969669914110089], [12.0, 15.75], [11.75, 15.853553390593273], [11.676776695296637, 15.823223304703363], [11.530330085889911, 15.469669914110089], [11.0, 15.25], [10.75, 15.353553390593273], [10.676776695296637, 15.323223304703363], [10.530330085889911, 14.969669914110089], [10.176776695296637, 14.823223304703363], [10.030330085889911, 14.469669914110089], [9.5, 14.25], [8.969669914110089, 14.469669914110089], [8.75, 15.0], [8.957106781186546, 15.5]]]}, "2020-05-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[7.8232233047033635, 16.17677669529664], [7.9696699141100895, 16.53033008588991], [8.5, 16.75], [9.0, 16.542893218813454], [9.323223304703363, 16.67677669529664], [9.469669914110089, 17.03033008588991], [9.823223304703363, 17.17677669529664], [9.853553390593273, 17.25], [9.75, 17.5], [9.969669914110089, 18.03033008588991], [10.323223304703363, 18.17677669529664], [10.469669914110089, 18.53033008588991], [11.0, 18.75], [11.530330085889911, 18.53033008588991], [11.75, 18.0], [11.646446609406727, 17.75], [11.676776695296637, 17.67677669529664], [11.75, 17.646446609406727], [11.823223304703363, 17.67677669529664], [11.969669914110089, 18.03033008588991], [12.5, 18.25], [12.801776695296637, 18.125], [12.969669914110089, 18.53033008588991], [13.5, 18.75], [14.030330085889911, 18.53033008588991], [14.176776695296637, 18.17677669529664], [14.25, 18.146446609406727], [14.5, 18.25], [14.75, 18.146446609406727], [14.823223304703363, 18.17677669529664], [14.969669914110089, 18.53033008588991], [15.5, 18.75], [15.75, 18.646446609406727], [16.0, 18.75], [16.25, 18.646446609406727], [16.5, 18.75], [17.03033008588991, 18.53033008588991], [17.25, 18.0], [17.03033008588991, 17.46966991411009], [16.67677669529664, 17.32322330470336], [16.646446609406727, 17.25], [16.75, 17.0], [16.646446609406727, 16.75], [16.75, 16.5], [16.646446609406727, 16.25], [16.67677669529664, 16.17677669529664], [17.03033008588991, 16.03033008588991], [17.25, 15.5], [17.03033008588991, 14.969669914110089], [16.67677669529664, 14.823223304703363], [16.53033008588991, 14.469669914110089], [16.0, 14.25], [15.469669914110089, 14.469669914110089], [15.323223304703363, 14.823223304703363], [15.25, 14.853553390593273], [15.0, 14.75], [14.75, 14.853553390593273], [14.5, 14.75], [13.969669914110089, 14.969669914110089], [13.823223304703363, 15.323223304703363], [13.469669914110089, 15.469669914110089], [13.323223304703363, 15.823223304703363], [12.969669914110089, 15.969669914110089], [12.801776695296637, 16.375], [12.676776695296637, 16.32322330470336], [12.530330085889911, 15.969669914110089], [12.0, 15.75], [11.75, 15.853553390593273], [11.676776695296637, 15.823223304703363], [11.530330085889911, 15.469669914110089], [11.0, 15.25], [10.75, 15.353553390593273], [10.676776695296637, 15.323223304703363], [10.530330085889911, 14.969669914110089], [10.176776695296637, 14.823223304703363], [10.030330085889911, 14.469669914110089], [9.676776695296637, 14.323223304703363], [9.530330085889911, 13.969669914110089], [9.0, 13.75], [8.469669914110089, 13.969669914110089], [8.25, 14.5], [8.375, 14.801776695296637], [8.25, 14.853553390593273], [8.0, 14.75], [7.4696699141100895, 14.969669914110089], [7.25, 15.5], [7.4696699141100895, 16.03033008588991], [7.8232233047033635, 16.17677669529664]]]}, "2020-05-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[7.8232233047033635, 16.17677669529664], [7.9696699141100895, 16.53033008588991], [8.5, 16.75], [9.0, 16.542893218813454], [9.5, 16.75], [9.75, 16.646446609406727], [10.0, 16.75], [10.25, 16.646446609406727], [10.5, 16.75], [10.75, 16.646446609406727], [11.0, 16.75], [11.530330085889911, 16.53033008588991], [11.75, 16.0], [11.530330085889911, 15.469669914110089], [11.0, 15.25], [10.75, 15.353553390593273], [10.676776695296637, 15.323223304703363], [10.530330085889911, 14.969669914110089], [10.176776695296637, 14.823223304703363], [10.030330085889911, 14.469669914110089], [9.676776695296637, 14.323223304703363], [9.530330085889911, 13.969669914110089], [9.0, 13.75], [8.469669914110089, 13.969669914110089], [8.25, 14.5], [8.375, 14.801776695296637], [8.25, 14.853553390593273], [8.0, 14.75], [7.4696699141100895, 14.969669914110089], [7.25, 15.5], [7.4696699141100895, 16.03033008588991], [7.8232233047033635, 16.17677669529664]]]}, "2020-05-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[7.8232233047033635, 16.17677669529664], [7.9696699141100895, 16.53033008588991], [8.5, 16.75], [9.030330085889911, 16.53033008588991], [9.176776695296637, 16.17677669529664], [9.25, 16.146446609406727], [9.5, 16.25], [10.030330085889911, 16.03033008588991], [10.25, 15.5], [10.030330085889911, 14.969669914110089], [9.625, 14.801776695296637], [9.75, 14.5], [9.530330085889911, 13.969669914110089], [9.0, 13.75], [8.469669914110089, 13.969669914110089], [8.25, 14.5], [8.375, 14.801776695296637], [8.25, 14.853553390593273], [8.0, 14.75], [7.4696699141100895, 14.969669914110089], [7.25, 15.5], [7.4696699141100895, 16.03033008588991], [7.8232233047033635, 16.17677669529664]]]}, "2020-05-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[8.25, 14.5], [8.469669914110089, 15.030330085889911], [9.0, 15.25], [9.530330085889911, 15.030330085889911], [9.75, 14.5], [9.530330085889911, 13.969669914110089], [9.0, 13.75], [8.469669914110089, 13.969669914110089], [8.25, 14.5]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.8639744342098084}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.157205756992174}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.85928691044245, 35.32718232807781, 35.42316046488793, 35.30399353952134, 35.058967812946435, 34.78191064199365, 34.51891702193251]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.85928691044245, 36.73365232209892, 37.14491334093941, 36.85451014720161, 35.397484527731194, 34.97573455256696, 34.51891702193251]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6416857381383352, 2.282343846953441, 2.2667370421673416, 2.0404698425083585, 1.9844546301017136, 1.7131581780087874, 1.8683690202233834]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.6416857381383352, 2.8639744342098084, 2.739442619903457, 2.6064612790128763, 2.215627979892986, 1.8891179853753783, 1.8683690202233834]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1894320709358064, 1.7564534914431245, 1.798437673103663, 1.6294216171660252, 1.4870950839204948, 1.27196737954856, 1.40036086306146]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1894320709358064, 2.1089774448879317, 2.3495614364878166, 2.040226437709318, 1.7121839213901215, 1.3602760346127414, 1.40036086306146]}}