{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:30.231598", "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": "2018-Apr-05_to_2018-Apr-07_346.0_14.5"}, "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": 2018040001607}, "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": "April 05 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 07 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 65313.90351603046}, "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": ["Mauritania", "Senegal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa"]}, "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": 14.5}, "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": 346.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "346.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 345.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 348.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.25, 15.0], [-15.03, 15.53], [-14.68, 15.68], [-14.53, 16.03], [-14.18, 16.18], [-14.15, 16.25], [-14.25, 16.5], [-14.03, 17.03], [-13.68, 17.18], [-13.65, 17.25], [-13.75, 17.5], [-13.53, 18.03], [-13.18, 18.18], [-13.03, 18.53], [-12.5, 18.75], [-12.25, 18.65], [-12.0, 18.75], [-11.47, 18.53], [-11.25, 18.0], [-11.35, 17.75], [-11.25, 17.5], [-11.46, 17.0], [-11.25, 16.5], [-11.47, 15.97], [-11.82, 15.82], [-11.85, 15.75], [-11.75, 15.5], [-11.97, 14.97], [-12.32, 14.82], [-12.47, 14.47], [-12.82, 14.32], [-12.97, 13.97], [-13.5, 13.75], [-13.75, 13.85], [-14.0, 13.75], [-14.53, 13.97], [-14.68, 14.32], [-15.03, 14.47], [-15.25, 15.0]]]]}, "2018-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.25, 15.0], [-15.03, 15.53], [-14.68, 15.68], [-14.53, 16.03], [-14.18, 16.18], [-14.15, 16.25], [-14.25, 16.5], [-14.03, 17.03], [-13.68, 17.18], [-13.65, 17.25], [-13.75, 17.5], [-13.53, 18.03], [-13.18, 18.18], [-13.03, 18.53], [-12.5, 18.75], [-12.25, 18.65], [-12.0, 18.75], [-11.47, 18.53], [-11.25, 18.0], [-11.35, 17.75], [-11.25, 17.5], [-11.46, 17.0], [-11.25, 16.5], [-11.47, 15.97], [-11.82, 15.82], [-11.85, 15.75], [-11.75, 15.5], [-11.97, 14.97], [-12.32, 14.82], [-12.47, 14.47], [-12.82, 14.32], [-12.97, 13.97], [-13.5, 13.75], [-13.75, 13.85], [-14.0, 13.75], [-14.53, 13.97], [-14.68, 14.32], [-15.03, 14.47], [-15.25, 15.0]]]]}, "2018-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.25, 15.0], [-15.03, 15.53], [-14.68, 15.68], [-14.53, 16.03], [-14.18, 16.18], [-14.15, 16.25], [-14.25, 16.5], [-14.03, 17.03], [-13.68, 17.18], [-13.65, 17.25], [-13.75, 17.5], [-13.53, 18.03], [-13.18, 18.18], [-13.03, 18.53], [-12.5, 18.75], [-12.25, 18.65], [-12.0, 18.75], [-11.47, 18.53], [-11.25, 18.0], [-11.35, 17.75], [-11.25, 17.5], [-11.46, 17.0], [-11.25, 16.5], [-11.47, 15.97], [-11.82, 15.82], [-11.85, 15.75], [-11.75, 15.5], [-11.97, 14.97], [-12.32, 14.82], [-12.47, 14.47], [-12.82, 14.32], [-12.97, 13.97], [-13.5, 13.75], [-13.75, 13.85], [-14.0, 13.75], [-14.53, 13.97], [-14.68, 14.32], [-15.03, 14.47], [-15.25, 15.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.501471907600717}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.2858474327866887}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.52290135152458, 36.095767590610876, 35.824926466628085]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [36.85304962475328, 36.99676372524647, 37.128271970629214]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.991161180827398, 3.5836526843917382, 3.282728433140929]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.68590123568174, 4.501471907600717, 3.9833096347637706]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4233577310087404, 1.6618225286239678, 1.47968397541163]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8192317692097664, 2.2167532307031244, 1.685933932313167]}}