{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:09.262668", "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-Jun-30_to_2023-Jul-04_9.5_11.5"}, "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": 2023060003058}, "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": "June 30 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 04 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 63595.27952458294}, "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": ["Nigeria"]}, "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": 11.5}, "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": 9.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "9.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 7.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 11.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[12.03, 12.03], [12.25, 11.5], [12.15, 11.25], [12.25, 11.0], [12.15, 10.75], [12.25, 10.5], [12.03, 9.97], [11.5, 9.75], [11.0, 9.96], [10.5, 9.75], [9.97, 9.97], [9.82, 10.32], [9.75, 10.35], [9.5, 10.25], [8.97, 10.47], [8.75, 11.0], [8.85, 11.25], [8.8, 11.38], [8.5, 11.25], [8.25, 11.35], [8.18, 11.32], [8.03, 10.97], [7.5, 10.75], [6.97, 10.97], [6.75, 11.5], [6.85, 11.75], [6.75, 12.0], [6.97, 12.53], [7.32, 12.68], [7.47, 13.03], [8.0, 13.25], [8.25, 13.15], [8.5, 13.25], [8.75, 13.15], [9.0, 13.25], [9.53, 13.03], [9.68, 12.68], [9.75, 12.65], [10.0, 12.75], [10.53, 12.53], [10.68, 12.18], [10.75, 12.15], [11.0, 12.25], [11.25, 12.15], [11.5, 12.25], [12.03, 12.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.47, 12.53], [7.82, 12.68], [7.97, 13.03], [8.5, 13.25], [8.75, 13.15], [9.0, 13.25], [9.53, 13.03], [9.68, 12.68], [9.75, 12.65], [10.0, 12.75], [10.53, 12.53], [10.68, 12.18], [10.75, 12.15], [11.0, 12.25], [11.25, 12.15], [11.5, 12.25], [12.03, 12.03], [12.25, 11.5], [12.15, 11.25], [12.25, 11.0], [12.15, 10.75], [12.25, 10.5], [12.03, 9.97], [11.5, 9.75], [11.0, 9.96], [10.5, 9.75], [9.97, 9.97], [9.82, 10.32], [9.75, 10.35], [9.5, 10.25], [8.97, 10.47], [8.75, 11.0], [8.85, 11.25], [8.8, 11.38], [8.5, 11.25], [8.25, 11.35], [8.18, 11.32], [8.03, 10.97], [7.5, 10.75], [6.97, 10.97], [6.75, 11.5], [6.97, 12.03], [7.32, 12.18], [7.47, 12.53]]]]}, "2023-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.75, 12.0], [6.97, 12.53], [7.32, 12.68], [7.47, 13.03], [8.0, 13.25], [8.25, 13.15], [8.5, 13.25], [8.75, 13.15], [9.0, 13.25], [9.53, 13.03], [9.68, 12.68], [9.75, 12.65], [10.0, 12.75], [10.53, 12.53], [10.68, 12.18], [10.75, 12.15], [11.0, 12.25], [11.25, 12.15], [11.5, 12.25], [12.03, 12.03], [12.25, 11.5], [12.15, 11.25], [12.25, 11.0], [12.15, 10.75], [12.25, 10.5], [12.03, 9.97], [11.5, 9.75], [11.0, 9.96], [10.5, 9.75], [9.97, 9.97], [9.82, 10.32], [9.75, 10.35], [9.5, 10.25], [8.97, 10.47], [8.75, 11.0], [8.85, 11.25], [8.8, 11.38], [8.5, 11.25], [8.25, 11.35], [8.18, 11.32], [8.03, 10.97], [7.5, 10.75], [6.97, 10.97], [6.75, 11.5], [6.85, 11.75], [6.75, 12.0]]]]}, "2023-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.75, 12.0], [6.97, 12.53], [7.32, 12.68], [7.47, 13.03], [8.0, 13.25], [8.25, 13.15], [8.5, 13.25], [8.75, 13.15], [9.0, 13.25], [9.53, 13.03], [9.68, 12.68], [9.75, 12.65], [10.0, 12.75], [10.53, 12.53], [10.68, 12.18], [10.75, 12.15], [11.0, 12.25], [11.25, 12.15], [11.5, 12.25], [12.03, 12.03], [12.25, 11.5], [12.15, 11.25], [12.25, 11.0], [12.15, 10.75], [12.25, 10.5], [12.03, 9.97], [11.5, 9.75], [11.0, 9.96], [10.5, 9.75], [9.97, 9.97], [9.82, 10.32], [9.75, 10.35], [9.5, 10.25], [8.97, 10.47], [8.75, 11.0], [8.85, 11.25], [8.8, 11.38], [8.5, 11.25], [8.25, 11.35], [8.18, 11.32], [8.03, 10.97], [7.5, 10.75], [6.97, 10.97], [6.75, 11.5], [6.85, 11.75], [6.75, 12.0]]]]}, "2023-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.75, 12.0], [6.97, 12.53], [7.32, 12.68], [7.47, 13.03], [8.0, 13.25], [8.25, 13.15], [8.5, 13.25], [8.75, 13.15], [9.0, 13.25], [9.53, 13.03], [9.68, 12.68], [9.75, 12.65], [10.0, 12.75], [10.53, 12.53], [10.68, 12.18], [10.75, 12.15], [11.0, 12.25], [11.25, 12.15], [11.5, 12.25], [12.03, 12.03], [12.25, 11.5], [12.15, 11.25], [12.25, 11.0], [12.15, 10.75], [12.25, 10.5], [12.03, 9.97], [11.5, 9.75], [11.0, 9.96], [10.5, 9.75], [9.97, 9.97], [9.82, 10.32], [9.75, 10.35], [9.5, 10.25], [8.97, 10.47], [8.75, 11.0], [8.85, 11.25], [8.8, 11.38], [8.5, 11.25], [8.25, 11.35], [8.18, 11.32], [8.03, 10.97], [7.5, 10.75], [6.97, 10.97], [6.75, 11.5], [6.85, 11.75], [6.75, 12.0]]]]}, "2023-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 11.0], [10.85, 11.25], [10.75, 11.5], [10.97, 12.03], [11.5, 12.25], [12.03, 12.03], [12.25, 11.5], [12.15, 11.25], [12.25, 11.0], [12.15, 10.75], [12.25, 10.5], [12.03, 9.97], [11.5, 9.75], [10.97, 9.97], [10.75, 10.5], [10.85, 10.75], [10.75, 11.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.5835817065349715}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.356688872488056}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.90789420543024, 30.337490942322006, 29.444039500147994, 29.620419609427813, 30.28748557300736]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.631185643682727, 32.128377781808126, 31.37940213620783, 32.07739820477576, 30.687477045002595]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.342916714406209, 2.837023307954285, 2.005413998574922, 2.27673619767522, 2.0735134415536627]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.90427877662097, 3.5835817065349715, 2.513567622361336, 3.09776500769334, 2.2418196145980005]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7912662115233142, 2.1918179079231885, 1.5762825837240189, 1.829079436047125, 1.449624040171576]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.259716530803953, 2.7362184718488427, 1.9366538842346905, 2.2595907701453983, 1.536421516031232]}}