{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:25.463253", "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": "2023-May-07_to_2023-May-10_13.5_9.0"}, "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": 2023050001588}, "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 07 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 10 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 79152.40805615592}, "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", "Chad", "Nigeria"]}, "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": 9.0}, "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": 13.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[12.85, 9.25], [12.75, 9.5], [12.97, 10.03], [13.32, 10.18], [13.38, 10.3], [12.97, 10.47], [12.75, 11.0], [12.97, 11.53], [13.5, 11.75], [13.75, 11.65], [14.0, 11.75], [14.25, 11.65], [14.5, 11.75], [14.75, 11.65], [15.0, 11.75], [15.25, 11.65], [15.5, 11.75], [16.0, 11.54], [16.5, 11.75], [17.03, 11.53], [17.25, 11.0], [17.15, 10.75], [17.18, 10.68], [17.53, 10.53], [17.75, 10.0], [17.53, 9.47], [17.0, 9.25], [16.7, 9.38], [16.53, 8.97], [16.18, 8.82], [16.03, 8.47], [15.5, 8.25], [15.2, 8.38], [15.03, 7.97], [14.68, 7.82], [14.53, 7.47], [14.0, 7.25], [13.47, 7.47], [13.25, 8.0], [13.35, 8.25], [13.32, 8.32], [12.97, 8.47], [12.75, 9.0], [12.85, 9.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa", "Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.5, 8.25], [12.97, 8.47], [12.75, 9.0], [12.97, 9.53], [13.5, 9.75], [14.03, 9.53], [14.25, 9.0], [14.03, 8.47], [13.5, 8.25]]], [[[15.5, 9.75], [14.97, 9.97], [14.75, 10.5], [14.97, 11.03], [15.5, 11.25], [16.03, 11.03], [16.25, 10.5], [16.03, 9.97], [15.5, 9.75]]]]}, "2023-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.75, 9.5], [12.97, 10.03], [13.32, 10.18], [13.38, 10.3], [12.97, 10.47], [12.75, 11.0], [12.97, 11.53], [13.5, 11.75], [13.75, 11.65], [14.0, 11.75], [14.25, 11.65], [14.5, 11.75], [14.75, 11.65], [15.0, 11.75], [15.25, 11.65], [15.5, 11.75], [16.0, 11.54], [16.5, 11.75], [17.03, 11.53], [17.25, 11.0], [17.15, 10.75], [17.18, 10.68], [17.53, 10.53], [17.75, 10.0], [17.53, 9.47], [17.0, 9.25], [16.7, 9.38], [16.53, 8.97], [16.18, 8.82], [16.03, 8.47], [15.5, 8.25], [15.2, 8.38], [15.03, 7.97], [14.68, 7.82], [14.53, 7.47], [14.0, 7.25], [13.47, 7.47], [13.25, 8.0], [13.35, 8.25], [13.32, 8.32], [12.97, 8.47], [12.75, 9.0], [12.85, 9.25], [12.75, 9.5]]]]}, "2023-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.75, 9.5], [12.97, 10.03], [13.32, 10.18], [13.38, 10.3], [12.97, 10.47], [12.75, 11.0], [12.97, 11.53], [13.5, 11.75], [13.75, 11.65], [14.0, 11.75], [14.25, 11.65], [14.5, 11.75], [14.75, 11.65], [15.0, 11.75], [15.25, 11.65], [15.5, 11.75], [16.0, 11.54], [16.5, 11.75], [17.03, 11.53], [17.25, 11.0], [17.15, 10.75], [17.18, 10.68], [17.53, 10.53], [17.75, 10.0], [17.53, 9.47], [17.0, 9.25], [16.7, 9.38], [16.53, 8.97], [16.18, 8.82], [16.03, 8.47], [15.5, 8.25], [15.2, 8.38], [15.03, 7.97], [14.68, 7.82], [14.53, 7.47], [14.0, 7.25], [13.47, 7.47], [13.25, 8.0], [13.35, 8.25], [13.32, 8.32], [12.97, 8.47], [12.75, 9.0], [12.85, 9.25], [12.75, 9.5]]]]}, "2023-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.75, 9.5], [12.97, 10.03], [13.32, 10.18], [13.38, 10.3], [12.97, 10.47], [12.75, 11.0], [12.97, 11.53], [13.5, 11.75], [13.75, 11.65], [14.0, 11.75], [14.25, 11.65], [14.5, 11.75], [14.75, 11.65], [15.0, 11.75], [15.25, 11.65], [15.5, 11.75], [16.0, 11.54], [16.5, 11.75], [17.03, 11.53], [17.25, 11.0], [17.15, 10.75], [17.18, 10.68], [17.53, 10.53], [17.75, 10.0], [17.53, 9.47], [17.0, 9.25], [16.7, 9.38], [16.53, 8.97], [16.18, 8.82], [16.03, 8.47], [15.5, 8.25], [15.2, 8.38], [15.03, 7.97], [14.68, 7.82], [14.53, 7.47], [14.0, 7.25], [13.47, 7.47], [13.25, 8.0], [13.35, 8.25], [13.32, 8.32], [12.97, 8.47], [12.75, 9.0], [12.85, 9.25], [12.75, 9.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.8082397089993947}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.550928196373756}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.473672264152356, 34.17205576755231, 34.63120674462351, 34.25938160018768]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.10703841373521, 35.82091019659123, 36.134184687301286, 36.060969089346656]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.046130265559242, 2.2816774435374065, 2.831321996456869, 2.5786157591896464]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.1169890103971056, 2.596348590787102, 3.8082397089993947, 3.4062776753724506]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.0612861791465975, 1.2729580731120858, 1.5801921056694392, 1.4408264761376965]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1079947976962383, 1.4586482748797456, 2.0047193329058985, 1.8776868206826998]}}