{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:27.469368", "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": "2022-Feb-27_to_2022-Mar-01_23.0_-14.5"}, "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": 2022020002571}, "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": "February 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 01 2022"}, "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": 92706.72723095407}, "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": ["Angola", "Zambia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -14.5}, "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": 22.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[21.82, -13.82], [21.97, -13.47], [22.32, -13.32], [22.35, -13.25], [22.25, -13.0], [22.47, -12.47], [22.82, -12.32], [22.97, -11.97], [23.5, -11.75], [23.75, -11.85], [24.0, -11.75], [24.53, -11.97], [24.75, -12.5], [24.65, -12.75], [24.75, -13.0], [24.65, -13.25], [24.75, -13.5], [24.54, -14.0], [24.7, -14.37], [25.0, -14.25], [25.53, -14.47], [25.75, -15.0], [25.65, -15.25], [25.75, -15.5], [25.65, -15.75], [25.75, -16.0], [25.53, -16.53], [25.18, -16.68], [25.03, -17.03], [24.5, -17.25], [23.97, -17.03], [23.82, -16.68], [23.75, -16.65], [23.5, -16.75], [22.97, -16.53], [22.82, -16.18], [22.47, -16.03], [22.32, -15.68], [22.25, -15.65], [22.0, -15.75], [21.47, -15.53], [21.25, -15.0], [21.35, -14.75], [21.25, -14.5], [21.47, -13.97], [21.82, -13.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa", "E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, -14.5], [21.47, -13.97], [21.82, -13.82], [21.97, -13.47], [22.32, -13.32], [22.35, -13.25], [22.25, -13.0], [22.47, -12.47], [22.82, -12.32], [22.97, -11.97], [23.5, -11.75], [23.75, -11.85], [24.0, -11.75], [24.53, -11.97], [24.75, -12.5], [24.65, -12.75], [24.75, -13.0], [24.65, -13.25], [24.75, -13.5], [24.54, -14.0], [24.7, -14.37], [25.0, -14.25], [25.53, -14.47], [25.75, -15.0], [25.65, -15.25], [25.75, -15.5], [25.65, -15.75], [25.75, -16.0], [25.53, -16.53], [25.18, -16.68], [25.03, -17.03], [24.5, -17.25], [23.97, -17.03], [23.82, -16.68], [23.75, -16.65], [23.5, -16.75], [22.97, -16.53], [22.82, -16.18], [22.47, -16.03], [22.32, -15.68], [22.25, -15.65], [22.0, -15.75], [21.47, -15.53], [21.25, -15.0], [21.35, -14.75], [21.25, -14.5]]]]}, "2022-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, -14.5], [21.47, -13.97], [21.82, -13.82], [21.97, -13.47], [22.32, -13.32], [22.35, -13.25], [22.25, -13.0], [22.47, -12.47], [22.82, -12.32], [22.97, -11.97], [23.5, -11.75], [23.75, -11.85], [24.0, -11.75], [24.53, -11.97], [24.75, -12.5], [24.65, -12.75], [24.75, -13.0], [24.65, -13.25], [24.75, -13.5], [24.54, -14.0], [24.7, -14.37], [25.0, -14.25], [25.53, -14.47], [25.75, -15.0], [25.65, -15.25], [25.75, -15.5], [25.65, -15.75], [25.75, -16.0], [25.53, -16.53], [25.18, -16.68], [25.03, -17.03], [24.5, -17.25], [23.97, -17.03], [23.82, -16.68], [23.75, -16.65], [23.5, -16.75], [22.97, -16.53], [22.82, -16.18], [22.47, -16.03], [22.32, -15.68], [22.25, -15.65], [22.0, -15.75], [21.47, -15.53], [21.25, -15.0], [21.35, -14.75], [21.25, -14.5]]]]}, "2022-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, -14.5], [21.47, -13.97], [21.82, -13.82], [21.97, -13.47], [22.32, -13.32], [22.35, -13.25], [22.25, -13.0], [22.47, -12.47], [22.82, -12.32], [22.97, -11.97], [23.5, -11.75], [23.75, -11.85], [24.0, -11.75], [24.53, -11.97], [24.75, -12.5], [24.65, -12.75], [24.75, -13.0], [24.65, -13.25], [24.75, -13.5], [24.54, -14.0], [24.7, -14.37], [25.0, -14.25], [25.53, -14.47], [25.75, -15.0], [25.65, -15.25], [25.75, -15.5], [25.65, -15.75], [25.75, -16.0], [25.53, -16.53], [25.18, -16.68], [25.03, -17.03], [24.5, -17.25], [23.97, -17.03], [23.82, -16.68], [23.75, -16.65], [23.5, -16.75], [22.97, -16.53], [22.82, -16.18], [22.47, -16.03], [22.32, -15.68], [22.25, -15.65], [22.0, -15.75], [21.47, -15.53], [21.25, -15.0], [21.35, -14.75], [21.25, -14.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.7267949595535015}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9881870530425323}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.285070575601253, 24.47846457750512, 24.78155083731474]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.666849108869485, 25.69541490669178, 25.655119422517203]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.78467696016835, 1.9436275026956855, 2.236256696263561]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2842327871155703, 2.4190594195687822, 2.7267949595535015]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.637663827291062, 1.7674925858087802, 2.035489215178885]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.964872301118107, 2.130717012191096, 2.7738851351137748]}}