{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:18.922589", "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-Jan-31_to_2022-Feb-02_19.5_-11.0"}, "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": 2022010002919}, "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": "January 31 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 02 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": 63553.60292747403}, "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"]}, "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": -11.0}, "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": 19.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[17.5, -10.25], [18.03, -10.47], [18.18, -10.82], [18.25, -10.85], [18.32, -10.82], [18.47, -10.47], [19.0, -10.25], [19.25, -10.35], [19.32, -10.32], [19.35, -10.25], [19.25, -10.0], [19.47, -9.47], [20.0, -9.25], [20.53, -9.47], [20.75, -10.0], [20.65, -10.25], [20.68, -10.32], [21.03, -10.47], [21.25, -11.0], [21.03, -11.53], [20.68, -11.68], [20.53, -12.03], [20.13, -12.2], [20.25, -12.5], [20.15, -12.75], [20.25, -13.0], [20.03, -13.53], [19.5, -13.75], [19.25, -13.65], [19.0, -13.75], [18.75, -13.65], [18.5, -13.75], [18.25, -13.65], [18.0, -13.75], [17.47, -13.53], [17.25, -13.0], [17.46, -12.5], [17.32, -12.18], [16.97, -12.03], [16.75, -11.5], [16.85, -11.25], [16.75, -11.0], [16.97, -10.47], [17.5, -10.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, -11.0], [16.97, -10.47], [17.5, -10.25], [18.03, -10.47], [18.18, -10.82], [18.25, -10.85], [18.32, -10.82], [18.47, -10.47], [19.0, -10.25], [19.25, -10.35], [19.32, -10.32], [19.35, -10.25], [19.25, -10.0], [19.47, -9.47], [20.0, -9.25], [20.53, -9.47], [20.75, -10.0], [20.65, -10.25], [20.68, -10.32], [21.03, -10.47], [21.25, -11.0], [21.03, -11.53], [20.68, -11.68], [20.53, -12.03], [20.13, -12.2], [20.25, -12.5], [20.15, -12.75], [20.25, -13.0], [20.03, -13.53], [19.5, -13.75], [19.25, -13.65], [19.0, -13.75], [18.75, -13.65], [18.5, -13.75], [18.25, -13.65], [18.0, -13.75], [17.47, -13.53], [17.25, -13.0], [17.46, -12.5], [17.32, -12.18], [16.97, -12.03], [16.75, -11.5], [16.85, -11.25], [16.75, -11.0]]]]}, "2022-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, -11.0], [16.97, -10.47], [17.5, -10.25], [18.03, -10.47], [18.18, -10.82], [18.25, -10.85], [18.32, -10.82], [18.47, -10.47], [19.0, -10.25], [19.25, -10.35], [19.32, -10.32], [19.35, -10.25], [19.25, -10.0], [19.47, -9.47], [20.0, -9.25], [20.53, -9.47], [20.75, -10.0], [20.65, -10.25], [20.68, -10.32], [21.03, -10.47], [21.25, -11.0], [21.03, -11.53], [20.68, -11.68], [20.53, -12.03], [20.13, -12.2], [20.25, -12.5], [20.15, -12.75], [20.25, -13.0], [20.03, -13.53], [19.5, -13.75], [19.25, -13.65], [19.0, -13.75], [18.75, -13.65], [18.5, -13.75], [18.25, -13.65], [18.0, -13.75], [17.47, -13.53], [17.25, -13.0], [17.46, -12.5], [17.32, -12.18], [16.97, -12.03], [16.75, -11.5], [16.85, -11.25], [16.75, -11.0]]]]}, "2022-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, -11.0], [16.97, -10.47], [17.5, -10.25], [18.03, -10.47], [18.18, -10.82], [18.25, -10.85], [18.32, -10.82], [18.47, -10.47], [19.0, -10.25], [19.25, -10.35], [19.32, -10.32], [19.35, -10.25], [19.25, -10.0], [19.47, -9.47], [20.0, -9.25], [20.53, -9.47], [20.75, -10.0], [20.65, -10.25], [20.68, -10.32], [21.03, -10.47], [21.25, -11.0], [21.03, -11.53], [20.68, -11.68], [20.53, -12.03], [20.13, -12.2], [20.25, -12.5], [20.15, -12.75], [20.25, -13.0], [20.03, -13.53], [19.5, -13.75], [19.25, -13.65], [19.0, -13.75], [18.75, -13.65], [18.5, -13.75], [18.25, -13.65], [18.0, -13.75], [17.47, -13.53], [17.25, -13.0], [17.46, -12.5], [17.32, -12.18], [16.97, -12.03], [16.75, -11.5], [16.85, -11.25], [16.75, -11.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.473852676614001}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.7179875755777407}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.640489532020865, 22.641663729660536, 22.5447502982762]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.66486792234997, 23.708847118226743, 23.667767404385927]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7678148332297172, 1.746563475525937, 1.6395844179775683]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.266442512657761, 2.473852676614001, 2.047739829869329]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7295608295846574, 1.6624514693401953, 1.5210773910001893]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.451896396971483, 2.08809194986831, 2.06561164117174]}}