{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:25:30.752026", "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-Dec-09_to_2022-Dec-15_11.5_4.5"}, "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": 2022120002010}, "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 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 15 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 61641.46064336992}, "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": ["Cameroon"]}, "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": 4.5}, "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": 11.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 10.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 13.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[9.97, 2.47], [9.75, 3.0], [9.97, 3.53], [10.32, 3.68], [10.35, 3.75], [10.25, 4.0], [10.35, 4.25], [10.25, 4.5], [10.35, 4.75], [10.25, 5.0], [10.47, 5.53], [10.82, 5.68], [10.97, 6.03], [11.5, 6.25], [11.75, 6.15], [12.0, 6.25], [12.25, 6.15], [12.5, 6.25], [13.03, 6.03], [13.25, 5.5], [13.15, 5.25], [13.18, 5.18], [13.53, 5.03], [13.75, 4.5], [13.53, 3.97], [13.0, 3.75], [12.75, 3.85], [12.68, 3.82], [12.53, 3.47], [12.0, 3.25], [11.75, 3.35], [11.68, 3.32], [11.65, 3.25], [11.68, 3.18], [12.03, 3.03], [12.25, 2.5], [12.03, 1.97], [11.5, 1.75], [11.25, 1.85], [11.0, 1.75], [10.47, 1.97], [10.32, 2.32], [9.97, 2.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa", "Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.0, 1.75], [10.47, 1.97], [10.25, 2.5], [10.47, 3.03], [11.0, 3.25], [11.25, 3.15], [11.5, 3.25], [12.03, 3.03], [12.25, 2.5], [12.03, 1.97], [11.5, 1.75], [11.25, 1.85], [11.0, 1.75]]]]}, "2022-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 2.47], [9.75, 3.0], [9.97, 3.53], [10.32, 3.68], [10.35, 3.75], [10.25, 4.0], [10.35, 4.25], [10.25, 4.5], [10.35, 4.75], [10.25, 5.0], [10.47, 5.53], [11.0, 5.75], [11.53, 5.53], [11.68, 5.18], [11.75, 5.15], [12.0, 5.25], [12.25, 5.15], [12.5, 5.25], [13.03, 5.03], [13.25, 4.5], [13.03, 3.97], [12.5, 3.75], [12.25, 3.85], [12.18, 3.82], [12.03, 3.47], [11.68, 3.32], [11.65, 3.25], [11.68, 3.18], [12.03, 3.03], [12.25, 2.5], [12.03, 1.97], [11.5, 1.75], [11.25, 1.85], [11.0, 1.75], [10.47, 1.97], [10.32, 2.32], [9.97, 2.47]]]]}, "2022-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 2.47], [9.75, 3.0], [9.97, 3.53], [10.32, 3.68], [10.35, 3.75], [10.25, 4.0], [10.35, 4.25], [10.25, 4.5], [10.35, 4.75], [10.25, 5.0], [10.47, 5.53], [10.82, 5.68], [10.97, 6.03], [11.5, 6.25], [11.75, 6.15], [12.0, 6.25], [12.25, 6.15], [12.5, 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"2022-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, 4.47], [10.25, 5.0], [10.47, 5.53], [10.82, 5.68], [10.97, 6.03], [11.5, 6.25], [11.75, 6.15], [12.0, 6.25], [12.25, 6.15], [12.5, 6.25], [13.03, 6.03], [13.25, 5.5], [13.15, 5.25], [13.18, 5.18], [13.53, 5.03], [13.75, 4.5], [13.53, 3.97], [13.0, 3.75], [12.75, 3.85], [12.68, 3.82], [12.53, 3.47], [12.0, 3.25], [11.75, 3.35], [11.5, 3.25], [10.97, 3.47], [10.75, 4.0], [10.85, 4.25], [10.82, 4.32], [10.47, 4.47]]]]}, "2022-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, 4.47], [10.25, 5.0], [10.47, 5.53], [10.82, 5.68], [10.97, 6.03], [11.5, 6.25], [11.75, 6.15], [12.0, 6.25], [12.25, 6.15], [12.5, 6.25], [13.03, 6.03], [13.25, 5.5], [13.15, 5.25], [13.18, 5.18], [13.53, 5.03], [13.75, 4.5], [13.53, 3.97], [13.0, 3.75], [12.75, 3.85], [12.68, 3.82], [12.53, 3.47], [12.0, 3.25], [11.75, 3.35], [11.5, 3.25], [10.97, 3.47], [10.75, 4.0], [10.85, 4.25], [10.82, 4.32], [10.47, 4.47]]]]}, "2022-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.47, 5.03], [13.0, 5.25], [13.53, 5.03], [13.75, 4.5], [13.53, 3.97], [13.0, 3.75], [12.47, 3.97], [12.25, 4.5], [12.47, 5.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.9694562065709533}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.2567357622238045}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.855153216382064, 25.193993710224333, 25.720913776765542, 25.365528165493515, 25.40000861644404, 25.73626039833823, 24.861015722399088]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.92900731517085, 26.358380621290678, 26.76235445545018, 26.54510480718824, 26.401439717208575, 26.760198131397885, 24.861015722399088]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.1538989850113524, 1.0737645488701257, 1.54174208216361, 1.1383115210306807, 1.0714133404028023, 1.376218247732652, 1.2304993115707816]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.2624459109214285, 1.3780856918416475, 1.9694562065709533, 1.5840766380366063, 1.2612852986117673, 1.6159468067507987, 1.2304993115707816]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.427807920614503, 1.6076882226099816, 2.189753562289048, 1.5710294571938908, 1.366270231026241, 1.6924305955337784, 1.4849370425310675]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5673477687456552, 2.011737314007549, 2.788683170933104, 1.9754362035242183, 1.5416867515694435, 1.934995364477346, 1.4849370425310675]}}