{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:33.876971", "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-23_to_2018-Apr-26_5.5_23.0"}, "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": 2018040002473}, "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 23 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 2018"}, "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": 61815.28008582561}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 23.0}, "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": 5.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "5.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 4.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 8.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.5, 23.75], [5.75, 23.65], [6.0, 23.75], [6.53, 23.53], [6.75, 23.0], [6.53, 22.47], [6.0, 22.25], [5.75, 22.35], [5.68, 22.32], [5.53, 21.97], [5.0, 21.75], [4.47, 21.97], [4.25, 22.5], [4.47, 23.03], [4.82, 23.18], [4.97, 23.53], [5.5, 23.75]]]]}, "2018-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.75, 24.0], [4.97, 24.53], [5.32, 24.68], [5.35, 24.75], [5.25, 25.0], [5.47, 25.53], [5.82, 25.68], [5.97, 26.03], [6.32, 26.18], [6.47, 26.53], [7.0, 26.75], [7.25, 26.65], [7.5, 26.75], [7.75, 26.65], [8.0, 26.75], [8.53, 26.53], [8.75, 26.0], [8.65, 25.75], [8.75, 25.5], [8.53, 24.97], [8.18, 24.82], [8.03, 24.47], [7.68, 24.32], [7.65, 24.25], [7.75, 24.0], [7.53, 23.47], [7.0, 23.25], [6.75, 23.35], [6.68, 23.32], [6.65, 23.25], [6.75, 23.0], [6.53, 22.47], [6.0, 22.25], [5.75, 22.35], [5.68, 22.32], [5.53, 21.97], [5.0, 21.75], [4.47, 21.97], [4.25, 22.5], [4.47, 23.03], [4.82, 23.18], [4.96, 23.5], [4.75, 24.0]]]]}, "2018-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.75, 24.0], [4.97, 24.53], [5.32, 24.68], [5.35, 24.75], [5.25, 25.0], [5.47, 25.53], [5.82, 25.68], [5.97, 26.03], [6.32, 26.18], [6.47, 26.53], [7.0, 26.75], [7.25, 26.65], [7.5, 26.75], [7.75, 26.65], [8.0, 26.75], [8.53, 26.53], [8.75, 26.0], [8.65, 25.75], [8.75, 25.5], [8.53, 24.97], [8.18, 24.82], [8.03, 24.47], [7.68, 24.32], [7.65, 24.25], [7.75, 24.0], [7.53, 23.47], [7.0, 23.25], [6.75, 23.35], [6.68, 23.32], [6.65, 23.25], [6.75, 23.0], [6.53, 22.47], [6.0, 22.25], [5.75, 22.35], [5.68, 22.32], [5.53, 21.97], [5.0, 21.75], [4.47, 21.97], [4.25, 22.5], [4.47, 23.03], [4.82, 23.18], [4.96, 23.5], [4.75, 24.0]]]]}, "2018-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.97, 24.53], [5.32, 24.68], [5.35, 24.75], [5.25, 25.0], [5.47, 25.53], [5.82, 25.68], [5.97, 26.03], [6.32, 26.18], [6.47, 26.53], [7.0, 26.75], [7.25, 26.65], [7.5, 26.75], [7.75, 26.65], [8.0, 26.75], [8.53, 26.53], [8.75, 26.0], [8.65, 25.75], [8.75, 25.5], [8.53, 24.97], [8.18, 24.82], [8.03, 24.47], [7.68, 24.32], [7.65, 24.25], [7.75, 24.0], [7.53, 23.47], [7.0, 23.25], [6.75, 23.35], [6.68, 23.32], [6.65, 23.25], [6.75, 23.0], [6.53, 22.47], [6.0, 22.25], [5.75, 22.35], [5.5, 22.25], [4.97, 22.47], [4.75, 23.0], [4.96, 23.5], [4.75, 24.0], [4.97, 24.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.436076060389723}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.395688997094188}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.421874894127143, 28.848167068429063, 29.96949141581058, 29.437653281181724]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.642881936575748, 32.796610860589055, 32.18056954105066, 31.744151160265687]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.0976370242160365, 3.9283666112217657, 4.978973214879812, 4.45964116931057]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.252662502911278, 4.74272298237662, 6.436076060389723, 5.655206029120791]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3234876092271592, 1.3919126634511818, 1.7306490330759206, 1.5682994917906068]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3687932537557415, 1.756685616373432, 2.0813089270276937, 2.039348528175159]}}