{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:56.053106", "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": "2017-Sep-09_to_2017-Sep-13_12.0_14.0"}, "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": 2017090001562}, "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": "September 09 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 13 2017"}, "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": 71805.49324709196}, "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"]}, "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": 14.0}, "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": 12.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "12.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 9.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 14.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.25, 14.0], [10.47, 14.53], [11.0, 14.75], [11.25, 14.65], [11.5, 14.75], [11.75, 14.65], [12.0, 14.75], [12.53, 14.53], [12.75, 14.0], [12.53, 13.47], [12.18, 13.32], [12.03, 12.97], [11.5, 12.75], [10.97, 12.97], [10.82, 13.32], [10.47, 13.47], [10.25, 14.0]]]]}, "2017-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.85, 15.75], [8.75, 16.0], [8.97, 16.53], [9.5, 16.75], [10.03, 16.53], [10.25, 16.0], [10.15, 15.75], [10.18, 15.68], [10.25, 15.65], [10.5, 15.75], [10.75, 15.65], [11.0, 15.75], [11.53, 15.53], [11.68, 15.18], [11.75, 15.15], [12.0, 15.25], [12.25, 15.15], [12.5, 15.25], [12.75, 15.15], [12.82, 15.18], [12.97, 15.53], [13.5, 15.75], [13.75, 15.65], [14.0, 15.75], [14.25, 15.65], [14.5, 15.75], [15.03, 15.53], [15.25, 15.0], [15.15, 14.75], [15.25, 14.5], [15.03, 13.97], [14.68, 13.82], [14.53, 13.47], [14.0, 13.25], [13.5, 13.46], [13.0, 13.25], [12.75, 13.35], [12.5, 13.25], [12.25, 13.35], [12.18, 13.32], [12.03, 12.97], [11.5, 12.75], [11.25, 12.85], [11.0, 12.75], [10.47, 12.97], [10.25, 13.5], [10.35, 13.75], [10.25, 14.0], [10.38, 14.3], [10.25, 14.35], [10.0, 14.25], [9.75, 14.35], [9.5, 14.25], [8.97, 14.47], [8.75, 15.0], [8.85, 15.25], [8.75, 15.5], [8.85, 15.75]]]]}, "2017-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.85, 15.75], [8.75, 16.0], [8.97, 16.53], [9.5, 16.75], [10.03, 16.53], [10.25, 16.0], [10.15, 15.75], [10.18, 15.68], [10.25, 15.65], [10.5, 15.75], [10.75, 15.65], [11.0, 15.75], [11.53, 15.53], [11.68, 15.18], [11.75, 15.15], [12.0, 15.25], [12.25, 15.15], [12.5, 15.25], [12.75, 15.15], [12.82, 15.18], [12.97, 15.53], [13.5, 15.75], [13.75, 15.65], [14.0, 15.75], [14.25, 15.65], [14.5, 15.75], [15.03, 15.53], [15.25, 15.0], [15.15, 14.75], [15.25, 14.5], [15.03, 13.97], [14.68, 13.82], [14.53, 13.47], [14.0, 13.25], [13.5, 13.46], [13.0, 13.25], [12.75, 13.35], [12.5, 13.25], [12.25, 13.35], [12.18, 13.32], [12.03, 12.97], [11.5, 12.75], [11.25, 12.85], [11.0, 12.75], [10.47, 12.97], [10.25, 13.5], [10.35, 13.75], [10.25, 14.0], [10.38, 14.3], [10.25, 14.35], [10.0, 14.25], [9.75, 14.35], [9.5, 14.25], [8.97, 14.47], [8.75, 15.0], [8.85, 15.25], [8.75, 15.5], [8.85, 15.75]]]]}, "2017-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.85, 15.75], [8.75, 16.0], [8.97, 16.53], [9.5, 16.75], [10.03, 16.53], [10.25, 16.0], [10.15, 15.75], [10.18, 15.68], [10.25, 15.65], [10.5, 15.75], [10.75, 15.65], [11.0, 15.75], [11.53, 15.53], [11.68, 15.18], [11.75, 15.15], [12.0, 15.25], [12.25, 15.15], [12.5, 15.25], [12.75, 15.15], [12.82, 15.18], [12.97, 15.53], [13.5, 15.75], [13.75, 15.65], [14.0, 15.75], [14.25, 15.65], [14.5, 15.75], [15.03, 15.53], [15.25, 15.0], [15.15, 14.75], [15.25, 14.5], [15.03, 13.97], [14.68, 13.82], [14.53, 13.47], [14.0, 13.25], [13.5, 13.46], [13.0, 13.25], [12.75, 13.35], [12.5, 13.25], [12.25, 13.35], [12.18, 13.32], [12.03, 12.97], [11.5, 12.75], [11.25, 12.85], [11.0, 12.75], [10.47, 12.97], [10.25, 13.5], [10.35, 13.75], [10.25, 14.0], [10.38, 14.3], [10.25, 14.35], [10.0, 14.25], [9.75, 14.35], [9.5, 14.25], [8.97, 14.47], [8.75, 15.0], [8.85, 15.25], [8.75, 15.5], [8.85, 15.75]]]]}, "2017-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.97, 15.03], [11.5, 15.25], [11.75, 15.15], [12.0, 15.25], [12.53, 15.03], [12.75, 14.5], [12.65, 14.25], [12.75, 14.0], [12.53, 13.47], [12.18, 13.32], [12.03, 12.97], [11.5, 12.75], [11.25, 12.85], [11.0, 12.75], [10.47, 12.97], [10.25, 13.5], [10.47, 14.03], [10.88, 14.2], [10.75, 14.5], [10.97, 15.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.5342354233273454}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.3361466200768253}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.693484540600025, 32.803141094699015, 32.683224015224766, 33.11394658639762, 32.09906190672501]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.00942664637796, 33.68450070157735, 33.82609375460095, 34.62482379729789, 33.171054439787156]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.1164645721002984, 2.333275041481386, 2.20403852248045, 2.5849193090536033, 1.965685797090225]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.207598157578275, 3.2405502908439985, 2.890970844016408, 3.5342354233273454, 2.028738780964545]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.40185758095107, 1.4682272100982983, 1.390871771493087, 1.7005600733324553, 1.3178940114796833]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4605653526633697, 1.9120386157843468, 1.6666795862475499, 2.218773233078374, 1.4791616448206195]}}