{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:20.963958", "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": "2021-Nov-18_to_2021-Nov-20_17.0_18.5"}, "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": 2021110001957}, "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": "November 18 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 20 2021"}, "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": 55991.767652724724}, "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"]}, "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": 18.5}, "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": 17.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 18.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.85, 17.25], [13.75, 17.5], [13.97, 18.03], [14.32, 18.18], [14.47, 18.53], [15.0, 18.75], [15.25, 18.65], [15.5, 18.75], [15.75, 18.65], [16.0, 18.75], [16.25, 18.65], [16.32, 18.68], [16.47, 19.03], [17.0, 19.25], [17.25, 19.15], [17.32, 19.18], [17.47, 19.53], [18.0, 19.75], [18.53, 19.53], [18.75, 19.0], [18.53, 18.47], [18.18, 18.32], [18.03, 17.97], [17.68, 17.82], [17.53, 17.47], [17.0, 17.25], [16.75, 17.35], [16.68, 17.32], [16.65, 17.25], [16.75, 17.0], [16.53, 16.47], [16.18, 16.32], [16.03, 15.97], [15.5, 15.75], [15.25, 15.85], [15.0, 15.75], [14.75, 15.85], [14.5, 15.75], [13.97, 15.97], [13.75, 16.5], [13.85, 16.75], [13.75, 17.0], [13.85, 17.25]]]]}, "2021-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.85, 17.25], [13.75, 17.5], [13.97, 18.03], [14.32, 18.18], [14.47, 18.53], [15.0, 18.75], [15.25, 18.65], [15.5, 18.75], [15.75, 18.65], [16.0, 18.75], [16.25, 18.65], [16.32, 18.68], [16.47, 19.03], [17.0, 19.25], [17.25, 19.15], [17.32, 19.18], [17.47, 19.53], [18.0, 19.75], [18.53, 19.53], [18.75, 19.0], [18.53, 18.47], [18.18, 18.32], [18.03, 17.97], [17.68, 17.82], [17.53, 17.47], [17.0, 17.25], [16.75, 17.35], [16.68, 17.32], [16.65, 17.25], [16.75, 17.0], [16.53, 16.47], [16.18, 16.32], [16.03, 15.97], [15.5, 15.75], [15.25, 15.85], [15.0, 15.75], [14.75, 15.85], [14.5, 15.75], [13.97, 15.97], [13.75, 16.5], [13.85, 16.75], [13.75, 17.0], [13.85, 17.25]]]]}, "2021-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.85, 17.25], [13.75, 17.5], [13.97, 18.03], [14.32, 18.18], [14.47, 18.53], [15.0, 18.75], [15.25, 18.65], [15.5, 18.75], [15.75, 18.65], [16.0, 18.75], [16.25, 18.65], [16.32, 18.68], [16.47, 19.03], [17.0, 19.25], [17.25, 19.15], [17.32, 19.18], [17.47, 19.53], [18.0, 19.75], [18.53, 19.53], [18.75, 19.0], [18.53, 18.47], [18.18, 18.32], [18.03, 17.97], [17.68, 17.82], [17.53, 17.47], [17.0, 17.25], [16.75, 17.35], [16.68, 17.32], [16.65, 17.25], [16.75, 17.0], [16.53, 16.47], [16.18, 16.32], [16.03, 15.97], [15.5, 15.75], [15.25, 15.85], [15.0, 15.75], [14.75, 15.85], [14.5, 15.75], [13.97, 15.97], [13.75, 16.5], [13.85, 16.75], [13.75, 17.0], [13.85, 17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.555316682078228}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.579002217766514}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.10430468160979, 26.578549688613293, 26.207593676911927]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.149357294230526, 28.130635088046517, 27.6959417020567]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.2548017660143986, 3.859753536079812, 3.6224513512053313]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.3942262892882127, 4.555316682078228, 3.9514458884955275]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5583799462825283, 1.8126318395129504, 1.6827177530046293]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6328092709156703, 2.098191445475214, 1.811767882675257]}}