{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:13:15.019600", "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-Jul-04_to_2018-Jul-07_23.0_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": 2018070001759}, "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": "July 04 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 07 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": 58307.13960416892}, "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", "Libya", "Sudan"]}, "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": 23.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 20.03], [21.82, 20.18], [21.97, 20.53], [22.5, 20.75], [22.75, 20.65], [23.0, 20.75], [23.25, 20.65], [23.32, 20.68], [23.47, 21.03], [24.0, 21.25], [24.25, 21.15], [24.5, 21.25], [25.03, 21.03], [25.25, 20.5], [25.15, 20.25], [25.25, 20.0], [25.03, 19.47], [24.68, 19.32], [24.65, 19.25], [24.75, 19.0], [24.53, 18.47], [24.13, 18.3], [24.25, 18.0], [24.03, 17.47], [23.5, 17.25], [23.25, 17.35], [23.0, 17.25], [22.47, 17.47], [22.25, 18.0], [22.35, 18.25], [22.32, 18.32], [22.25, 18.35], [22.0, 18.25], [21.47, 18.47], [21.25, 19.0], [21.35, 19.25], [21.25, 19.5], [21.47, 20.03]]]]}, "2018-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 20.03], [21.82, 20.18], [21.97, 20.53], [22.5, 20.75], [22.75, 20.65], [23.0, 20.75], [23.25, 20.65], [23.32, 20.68], [23.47, 21.03], [24.0, 21.25], [24.25, 21.15], [24.5, 21.25], [25.03, 21.03], [25.25, 20.5], [25.15, 20.25], [25.25, 20.0], [25.03, 19.47], [24.68, 19.32], [24.65, 19.25], [24.75, 19.0], [24.53, 18.47], [24.13, 18.3], [24.25, 18.0], [24.03, 17.47], [23.5, 17.25], [23.25, 17.35], [23.0, 17.25], [22.47, 17.47], [22.25, 18.0], [22.35, 18.25], [22.32, 18.32], [22.25, 18.35], [22.0, 18.25], [21.47, 18.47], [21.25, 19.0], [21.35, 19.25], [21.25, 19.5], [21.47, 20.03]]]]}, "2018-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 20.03], [21.82, 20.18], [21.97, 20.53], [22.5, 20.75], [22.75, 20.65], [23.0, 20.75], [23.25, 20.65], [23.32, 20.68], [23.47, 21.03], [24.0, 21.25], [24.25, 21.15], [24.5, 21.25], [25.03, 21.03], [25.25, 20.5], [25.15, 20.25], [25.25, 20.0], [25.03, 19.47], [24.68, 19.32], [24.65, 19.25], [24.75, 19.0], [24.53, 18.47], [24.13, 18.3], [24.25, 18.0], [24.03, 17.47], [23.5, 17.25], [23.25, 17.35], [23.0, 17.25], [22.47, 17.47], [22.25, 18.0], [22.35, 18.25], [22.32, 18.32], [22.25, 18.35], [22.0, 18.25], [21.47, 18.47], [21.25, 19.0], [21.35, 19.25], [21.25, 19.5], [21.47, 20.03]]]]}, "2018-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.0, 19.25], [23.53, 19.03], [23.75, 18.5], [23.53, 17.97], [23.0, 17.75], [22.47, 17.97], [22.25, 18.5], [22.47, 19.03], [23.0, 19.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.9166866407175576}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.1605188326457174}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.98347384458384, 32.885118332414834, 32.71851121526049, 32.824927154636214]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [34.42894385047083, 34.04538729887139, 34.44117174313732, 32.824927154636214]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.290780898903222, 2.2060012707611434, 2.0272796416565884, 1.3104125649696812]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.888094816976661, 2.9166866407175576, 2.530179233062313, 1.3104125649696812]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.651160636048698, 1.679298163360743, 1.674252770415054, 1.3391601688448567]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.973542767664193, 2.1196449865553495, 2.126441282704288, 1.3391601688448567]}}