{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:43.975379", "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-09_to_2022-Feb-15_25.0_5.0"}, "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": 2022020001723}, "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 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 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": 95455.61870150073}, "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", "Congo, The Democratic Republic of the", "South Sudan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": 5.0}, "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": 25.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.0\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": 27.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[23.47, 5.53], [23.82, 5.68], [23.97, 6.03], [24.32, 6.18], [24.35, 6.25], [24.25, 6.5], [24.47, 7.03], [25.0, 7.25], [25.53, 7.03], [25.68, 6.68], [26.03, 6.53], [26.18, 6.18], [26.25, 6.15], [26.5, 6.25], [27.03, 6.03], [27.18, 5.68], [27.25, 5.65], [27.5, 5.75], [28.03, 5.53], [28.25, 5.0], [28.15, 4.75], [28.25, 4.5], [28.03, 3.97], [27.68, 3.82], [27.53, 3.47], [27.0, 3.25], [26.5, 3.46], [26.0, 3.25], [25.75, 3.35], [25.5, 3.25], [24.97, 3.47], [24.82, 3.82], [24.75, 3.85], [24.5, 3.75], [24.25, 3.85], [24.0, 3.75], [23.75, 3.85], [23.5, 3.75], [23.25, 3.85], [23.0, 3.75], [22.47, 3.97], [22.32, 4.32], [22.25, 4.35], [22.0, 4.25], [21.47, 4.47], [21.25, 5.0], [21.46, 5.5], [21.25, 6.0], [21.47, 6.53], [22.0, 6.75], [22.53, 6.53], [22.68, 6.18], [23.03, 6.03], [23.25, 5.5], [23.15, 5.25], [23.18, 5.18], [23.25, 5.15], [23.32, 5.18], [23.47, 5.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.5, 3.75], [22.97, 3.97], [22.75, 4.5], [22.97, 5.03], [23.5, 5.25], [24.03, 5.03], [24.25, 4.5], [24.03, 3.97], [23.5, 3.75]]], [[[24.25, 5.0], [24.47, 5.53], [25.0, 5.75], [25.25, 5.65], [25.5, 5.75], [26.03, 5.53], [26.25, 5.0], [26.15, 4.75], [26.25, 4.5], [26.15, 4.25], [26.25, 4.0], [26.03, 3.47], [25.5, 3.25], [24.97, 3.47], [24.75, 4.0], [24.85, 4.25], [24.82, 4.32], [24.47, 4.47], [24.25, 5.0]]]]}, "2022-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, 6.03], [22.5, 6.25], [23.03, 6.03], [23.25, 5.5], [23.15, 5.25], [23.2, 5.13], [23.32, 5.18], [23.47, 5.53], [24.0, 5.75], [24.25, 5.65], [24.5, 5.75], [24.75, 5.65], [24.88, 5.7], [24.75, 6.0], [24.97, 6.53], [25.5, 6.75], [26.03, 6.53], [26.18, 6.18], [26.25, 6.15], [26.5, 6.25], [27.03, 6.03], [27.18, 5.68], [27.25, 5.65], [27.5, 5.75], [28.03, 5.53], [28.25, 5.0], [28.15, 4.75], [28.25, 4.5], [28.03, 3.97], [27.68, 3.82], [27.53, 3.47], [27.0, 3.25], [26.5, 3.46], [26.0, 3.25], [25.75, 3.35], [25.5, 3.25], [24.97, 3.47], [24.82, 3.82], [24.75, 3.85], [24.5, 3.75], [24.25, 3.85], [24.0, 3.75], [23.75, 3.85], [23.5, 3.75], [22.97, 3.97], [22.8, 4.38], [22.5, 4.25], [22.25, 4.35], [22.0, 4.25], [21.47, 4.47], [21.25, 5.0], [21.47, 5.53], [21.82, 5.68], [21.97, 6.03]]]]}, "2022-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, 6.03], [22.5, 6.25], [23.03, 6.03], [23.25, 5.5], [23.15, 5.25], [23.18, 5.18], [23.25, 5.15], [23.32, 5.18], [23.47, 5.53], [24.0, 5.75], [24.25, 5.65], [24.5, 5.75], [24.75, 5.65], [24.88, 5.7], [24.75, 6.0], [24.97, 6.53], [25.5, 6.75], [26.03, 6.53], [26.18, 6.18], [26.25, 6.15], [26.5, 6.25], [27.03, 6.03], [27.18, 5.68], [27.25, 5.65], [27.5, 5.75], [28.03, 5.53], [28.25, 5.0], [28.15, 4.75], [28.25, 4.5], [28.03, 3.97], [27.68, 3.82], [27.53, 3.47], [27.0, 3.25], [26.5, 3.46], [26.0, 3.25], [25.75, 3.35], [25.5, 3.25], [24.97, 3.47], [24.82, 3.82], [24.75, 3.85], [24.5, 3.75], [24.25, 3.85], [24.0, 3.75], [23.75, 3.85], [23.5, 3.75], [23.25, 3.85], [23.0, 3.75], [22.47, 3.97], [22.32, 4.32], [22.25, 4.35], [22.0, 4.25], [21.47, 4.47], [21.25, 5.0], [21.47, 5.53], [21.82, 5.68], [21.97, 6.03]]]]}, "2022-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, 6.03], [22.5, 6.25], [23.03, 6.03], [23.25, 5.5], [23.15, 5.25], [23.18, 5.18], [23.25, 5.15], [23.32, 5.18], [23.47, 5.53], [24.0, 5.75], [24.25, 5.65], [24.38, 5.7], [24.25, 6.0], [24.35, 6.25], [24.25, 6.5], [24.47, 7.03], [25.0, 7.25], [25.53, 7.03], [25.68, 6.68], [26.03, 6.53], [26.18, 6.18], [26.25, 6.15], [26.5, 6.25], [27.03, 6.03], [27.18, 5.68], [27.25, 5.65], [27.5, 5.75], [28.03, 5.53], [28.25, 5.0], [28.15, 4.75], [28.25, 4.5], [28.03, 3.97], [27.68, 3.82], [27.53, 3.47], [27.0, 3.25], [26.5, 3.46], [26.0, 3.25], [25.75, 3.35], [25.5, 3.25], [24.97, 3.47], [24.82, 3.82], [24.75, 3.85], [24.5, 3.75], [24.25, 3.85], [24.0, 3.75], [23.75, 3.85], [23.5, 3.75], [23.25, 3.85], [23.0, 3.75], [22.47, 3.97], [22.32, 4.32], [22.25, 4.35], [22.0, 4.25], [21.47, 4.47], [21.25, 5.0], [21.47, 5.53], [21.82, 5.68], [21.97, 6.03]]]]}, "2022-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, 6.0], [21.47, 6.53], [22.0, 6.75], [22.53, 6.53], [22.68, 6.18], [23.03, 6.03], [23.25, 5.5], [23.15, 5.25], [23.18, 5.18], [23.25, 5.15], [23.32, 5.18], [23.47, 5.53], [23.82, 5.68], [23.97, 6.03], [24.32, 6.18], [24.35, 6.25], [24.25, 6.5], [24.47, 7.03], [25.0, 7.25], [25.53, 7.03], [25.68, 6.68], [26.03, 6.53], [26.18, 6.18], [26.25, 6.15], [26.5, 6.25], [27.03, 6.03], [27.18, 5.68], [27.25, 5.65], [27.5, 5.75], [28.03, 5.53], [28.25, 5.0], [28.15, 4.75], [28.25, 4.5], [28.03, 3.97], [27.68, 3.82], [27.53, 3.47], [27.0, 3.25], [26.5, 3.46], [26.0, 3.25], [25.75, 3.35], [25.5, 3.25], [24.97, 3.47], [24.82, 3.82], [24.75, 3.85], [24.5, 3.75], [24.25, 3.85], [24.0, 3.75], [23.75, 3.85], [23.5, 3.75], [23.25, 3.85], [23.0, 3.75], [22.47, 3.97], [22.32, 4.32], [22.25, 4.35], [22.0, 4.25], [21.47, 4.47], [21.25, 5.0], [21.46, 5.5], [21.25, 6.0]]]]}, "2022-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 5.47], [21.25, 6.0], [21.47, 6.53], [22.0, 6.75], [22.53, 6.53], [22.68, 6.18], [23.03, 6.03], [23.25, 5.5], [23.07, 5.07], [23.32, 5.18], [23.47, 5.53], [23.82, 5.68], [23.97, 6.03], [24.32, 6.18], [24.35, 6.25], [24.25, 6.5], [24.47, 7.03], [25.0, 7.25], [25.53, 7.03], [25.68, 6.68], [26.03, 6.53], [26.18, 6.18], [26.25, 6.15], [26.5, 6.25], [27.03, 6.03], [27.18, 5.68], [27.25, 5.65], [27.5, 5.75], [28.03, 5.53], [28.25, 5.0], [28.15, 4.75], [28.25, 4.5], [28.03, 3.97], [27.68, 3.82], [27.53, 3.47], [27.0, 3.25], [26.5, 3.46], [26.0, 3.25], [25.47, 3.47], [25.32, 3.82], [25.0, 3.96], [24.5, 3.75], [24.0, 3.96], [23.5, 3.75], [22.97, 3.97], [22.75, 4.5], [22.93, 4.93], [22.5, 4.75], [21.97, 4.97], [21.82, 5.32], [21.47, 5.47]]]]}, "2022-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.97, 6.03], [24.5, 6.25], [25.03, 6.03], [25.18, 5.68], [25.53, 5.53], [25.75, 5.0], [25.53, 4.47], [25.18, 4.32], [25.03, 3.97], [24.5, 3.75], [23.97, 3.97], [23.75, 4.5], [23.96, 5.0], [23.75, 5.5], [23.97, 6.03]]], [[[22.0, 5.25], [21.47, 5.47], [21.25, 6.0], [21.47, 6.53], [22.0, 6.75], [22.53, 6.53], [22.75, 6.0], [22.53, 5.47], [22.0, 5.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.192850148271532}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.9718308133948086}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.353526866816765, 30.80027069059139, 30.409486546902542, 30.451482430627266, 30.778446702340204, 30.852644734803903, 30.126209289214785]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.720112536485317, 31.850230533359934, 32.132022956373305, 31.37581552870057, 31.84132010101166, 31.72889141049984, 30.648763559814313]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.7704523355778408, 3.1770995246305245, 2.876706016787827, 2.845727516182733, 3.1264110513865297, 2.966220566629486, 2.3928596819947074]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.954142137242343, 3.9482708362745598, 4.192850148271532, 3.694722382559803, 3.8614625417044977, 3.850111512980277, 2.7440388184564313]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.431248877264476, 1.6998344694907024, 1.601510483824448, 1.6282675936717608, 1.8251468450768078, 1.7031226312572298, 1.4542933672964449]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.530391201422264, 2.137183789187895, 2.281146120300197, 2.0220042998723406, 2.2472623541807857, 2.2069062490597635, 1.6126584946896507]}}