{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:53.296550", "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": "2015-Apr-20_to_2015-Apr-23_22.5_7.5"}, "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": 2015040002230}, "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 20 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 23 2015"}, "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": 58248.1270681914}, "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": ["Central African Republic"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": 7.5}, "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": 22.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, 8.03], [20.32, 8.18], [20.35, 8.25], [20.25, 8.5], [20.47, 9.03], [21.0, 9.25], [21.25, 9.15], [21.5, 9.25], [22.03, 9.03], [22.25, 8.5], [22.13, 8.2], [22.25, 8.15], [22.5, 8.25], [23.03, 8.03], [23.18, 7.68], [23.25, 7.65], [23.5, 7.75], [24.03, 7.53], [24.25, 7.0], [24.03, 6.47], [23.68, 6.32], [23.53, 5.97], [23.18, 5.82], [23.03, 5.47], [22.5, 5.25], [21.97, 5.47], [21.82, 5.82], [21.47, 5.97], [21.25, 6.5], [21.35, 6.75], [21.32, 6.82], [21.25, 6.85], [21.18, 6.82], [21.03, 6.47], [20.5, 6.25], [19.97, 6.47], [19.75, 7.0], [19.85, 7.25], [19.75, 7.5], [19.97, 8.03]]]]}, "2015-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, 8.03], [20.32, 8.18], [20.35, 8.25], [20.25, 8.5], [20.47, 9.03], [21.0, 9.25], [21.25, 9.15], [21.5, 9.25], [21.75, 9.15], [22.0, 9.25], [22.53, 9.03], [22.75, 8.5], [22.63, 8.2], [22.75, 8.15], [23.0, 8.25], [23.53, 8.03], [23.68, 7.68], [24.03, 7.53], [24.25, 7.0], [24.03, 6.47], [23.68, 6.32], [23.53, 5.97], [23.18, 5.82], [23.03, 5.47], [22.5, 5.25], [21.97, 5.47], [21.82, 5.82], [21.47, 5.97], [21.25, 6.5], [21.35, 6.75], [21.32, 6.82], [21.25, 6.85], [21.18, 6.82], [21.03, 6.47], [20.5, 6.25], [19.97, 6.47], [19.75, 7.0], [19.85, 7.25], [19.75, 7.5], [19.97, 8.03]]]]}, "2015-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, 8.03], [20.32, 8.18], [20.35, 8.25], [20.25, 8.5], [20.47, 9.03], [21.0, 9.25], [21.25, 9.15], [21.5, 9.25], [21.75, 9.15], [22.0, 9.25], [22.53, 9.03], [22.75, 8.5], [22.63, 8.2], [22.75, 8.15], [23.0, 8.25], [23.53, 8.03], [23.68, 7.68], [24.03, 7.53], [24.25, 7.0], [24.03, 6.47], [23.68, 6.32], [23.53, 5.97], [23.18, 5.82], [23.03, 5.47], [22.5, 5.25], [21.97, 5.47], [21.82, 5.82], [21.47, 5.97], [21.25, 6.5], [21.35, 6.75], [21.32, 6.82], [21.25, 6.85], [21.18, 6.82], [21.03, 6.47], [20.5, 6.25], [19.97, 6.47], [19.75, 7.0], [19.85, 7.25], [19.75, 7.5], [19.97, 8.03]]]]}, "2015-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.85, 7.25], [21.75, 7.5], [21.88, 7.8], [21.47, 7.97], [21.25, 8.5], [21.47, 9.03], [22.0, 9.25], [22.53, 9.03], [22.75, 8.5], [22.63, 8.2], [22.75, 8.15], [23.0, 8.25], [23.53, 8.03], [23.75, 7.5], [23.53, 6.97], [23.18, 6.82], [23.15, 6.75], [23.25, 6.5], [23.03, 5.97], [22.5, 5.75], [21.97, 5.97], [21.75, 6.5], [21.85, 6.75], [21.75, 7.0], [21.85, 7.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.6938198304623597}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.5604941583823755}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.838408509735643, 29.84776775055144, 30.287466986954428, 29.434337426717263]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.835288285217814, 32.23995686362946, 32.368048929453494, 30.685483658035366]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.325054334632378, 2.427254968061349, 2.943159638576919, 2.4131696576130026]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.6578422086643627, 3.289422998915086, 3.6938198304623597, 2.5991232674244316]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5495378062063037, 1.5456128381315222, 1.869021597576375, 1.4566831701360643]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9282975922499987, 1.8717864735511498, 2.2475210921635167, 1.6198899299575007]}}