{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:21:08.461537", "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": "2019-Dec-20_to_2019-Dec-23_41.0_15.0"}, "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": 2019120002065}, "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": "December 20 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 23 2019"}, "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": 50737.96520973068}, "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": ["Eritrea", "Ethiopia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "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": ["Red Sea"]}, "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": 15.0}, "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": 41.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.85, 17.25], [38.75, 17.5], [38.97, 18.03], [39.5, 18.25], [40.03, 18.03], [40.25, 17.5], [40.15, 17.25], [40.18, 17.18], [40.53, 17.03], [40.75, 16.5], [40.65, 16.25], [40.68, 16.18], [41.03, 16.03], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.65, 14.75], [41.75, 14.5], [41.65, 14.25], [41.75, 14.0], [41.53, 13.47], [41.18, 13.32], [41.03, 12.97], [40.5, 12.75], [40.25, 12.85], [40.0, 12.75], [39.47, 12.97], [39.25, 13.5], [39.35, 13.75], [39.25, 14.0], [39.47, 14.53], [39.82, 14.68], [39.85, 14.75], [39.82, 14.82], [39.47, 14.97], [39.25, 15.5], [39.35, 15.75], [39.32, 15.82], [38.97, 15.97], [38.75, 16.5], [38.85, 16.75], [38.75, 17.0], [38.85, 17.25]]]]}, "2019-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.85, 17.25], [38.75, 17.5], [38.97, 18.03], [39.5, 18.25], [40.03, 18.03], [40.25, 17.5], [40.15, 17.25], [40.18, 17.18], [40.53, 17.03], [40.75, 16.5], [40.65, 16.25], [40.68, 16.18], [41.03, 16.03], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.65, 14.75], [41.75, 14.5], [41.65, 14.25], [41.75, 14.0], [41.53, 13.47], [41.18, 13.32], [41.15, 13.25], [41.25, 13.0], [41.03, 12.47], [40.5, 12.25], [39.97, 12.47], [39.82, 12.82], [39.47, 12.97], [39.25, 13.5], [39.35, 13.75], [39.25, 14.0], [39.47, 14.53], [39.82, 14.68], [39.85, 14.75], [39.82, 14.82], [39.47, 14.97], [39.25, 15.5], [39.35, 15.75], [39.32, 15.82], [38.97, 15.97], [38.75, 16.5], [38.85, 16.75], [38.75, 17.0], [38.85, 17.25]]]]}, "2019-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.85, 17.25], [38.75, 17.5], [38.97, 18.03], [39.5, 18.25], [40.03, 18.03], [40.25, 17.5], [40.15, 17.25], [40.18, 17.18], [40.53, 17.03], [40.75, 16.5], [40.65, 16.25], [40.68, 16.18], [41.03, 16.03], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.65, 14.75], [41.75, 14.5], [41.65, 14.25], [41.75, 14.0], [41.53, 13.47], [41.18, 13.32], [41.15, 13.25], [41.25, 13.0], [41.03, 12.47], [40.5, 12.25], [39.97, 12.47], [39.82, 12.82], [39.47, 12.97], [39.25, 13.5], [39.35, 13.75], [39.25, 14.0], [39.47, 14.53], [39.82, 14.68], [39.85, 14.75], [39.82, 14.82], [39.47, 14.97], [39.25, 15.5], [39.35, 15.75], [39.32, 15.82], [38.97, 15.97], [38.75, 16.5], [38.85, 16.75], [38.75, 17.0], [38.85, 17.25]]]]}, "2019-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 14.03], [40.0, 14.25], [40.53, 14.03], [40.68, 13.68], [41.03, 13.53], [41.25, 13.0], [41.03, 12.47], [40.5, 12.25], [39.97, 12.47], [39.82, 12.82], [39.47, 12.97], [39.25, 13.5], [39.47, 14.03]]], [[[39.97, 16.03], [40.5, 16.25], [41.03, 16.03], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.47, 14.47], [40.32, 14.82], [39.97, 14.97], [39.75, 15.5], [39.97, 16.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.4792163250486396}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5265934677078532}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.837585819183744, 28.207834507288794, 27.80226952145, 26.900716188149374]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.550259038273396, 32.09452647986569, 31.702196787473724, 29.56238479960416]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4917995650030633, 1.769417184630617, 1.3754900091847362, 1.2759579803285135]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.03540541756621, 2.4792163250486396, 2.005835724345957, 1.7978701801926604]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7132555056029848, 1.9365808507014535, 1.4149482754983165, 1.303681314685848]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5151834583337473, 2.4947564259026014, 1.9212854607282093, 1.427445592117098]}}