{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:36.036683", "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": "2023-Feb-27_to_2023-Mar-03_9.5_7.0"}, "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": 2023020002658}, "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 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 113447.10250223044}, "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", "Nigeria"]}, "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": 7.0}, "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": 9.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "9.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 6.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 11.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[8.47, 8.53], [9.0, 8.75], [9.25, 8.65], [9.5, 8.75], [9.75, 8.65], [10.0, 8.75], [10.53, 8.53], [10.68, 8.18], [10.75, 8.15], [10.82, 8.18], [10.97, 8.53], [11.5, 8.75], [12.03, 8.53], [12.25, 8.0], [12.15, 7.75], [12.25, 7.5], [12.15, 7.25], [12.25, 7.0], [12.03, 6.47], [11.68, 6.32], [11.53, 5.97], [11.0, 5.75], [10.75, 5.85], [10.5, 5.75], [10.25, 5.85], [10.0, 5.75], [9.75, 5.85], [9.68, 5.82], [9.53, 5.47], [9.0, 5.25], [8.75, 5.35], [8.5, 5.25], [7.97, 5.47], [7.82, 5.82], [7.47, 5.97], [7.32, 6.32], [6.97, 6.47], [6.82, 6.82], [6.75, 6.85], [6.5, 6.75], [5.97, 6.97], [5.82, 7.32], [5.47, 7.47], [5.25, 8.0], [5.47, 8.53], [6.0, 8.75], [6.25, 8.65], [6.32, 8.68], [6.47, 9.03], [7.0, 9.25], [7.53, 9.03], [7.68, 8.68], [8.03, 8.53], [8.18, 8.18], [8.25, 8.15], [8.32, 8.18], [8.47, 8.53]]]]}}, "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": {"2023-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 7.47], [6.25, 8.0], [6.47, 8.53], [7.0, 8.75], [7.53, 8.53], [7.68, 8.18], [8.0, 8.04], [8.5, 8.25], [8.75, 8.15], [9.0, 8.25], [9.53, 8.03], [9.68, 7.68], [10.03, 7.53], [10.18, 7.18], [10.53, 7.03], [10.75, 6.5], [10.53, 5.97], [10.0, 5.75], [9.75, 5.85], [9.68, 5.82], [9.53, 5.47], [9.0, 5.25], [8.75, 5.35], [8.5, 5.25], [7.97, 5.47], [7.82, 5.82], [7.47, 5.97], [7.32, 6.32], [6.97, 6.47], [6.75, 7.0], [6.85, 7.25], [6.82, 7.32], [6.47, 7.47]]]]}, "2023-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.47, 7.47], [5.25, 8.0], [5.47, 8.53], [6.0, 8.75], [6.25, 8.65], [6.32, 8.68], [6.47, 9.03], [7.0, 9.25], [7.53, 9.03], [7.68, 8.68], [8.03, 8.53], [8.18, 8.18], [8.25, 8.15], [8.32, 8.18], [8.47, 8.53], [9.0, 8.75], [9.25, 8.65], [9.5, 8.75], [10.03, 8.53], [10.25, 8.0], [10.15, 7.75], [10.18, 7.68], [10.53, 7.53], [10.75, 7.0], [10.65, 6.75], [10.75, 6.5], [10.53, 5.97], [10.0, 5.75], [9.75, 5.85], [9.68, 5.82], [9.53, 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"2023-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.75, 7.5], [8.85, 7.75], [8.75, 8.0], [8.97, 8.53], [9.5, 8.75], [9.75, 8.65], [10.0, 8.75], [10.53, 8.53], [10.68, 8.18], [10.75, 8.15], [10.82, 8.18], [10.97, 8.53], [11.5, 8.75], [12.03, 8.53], [12.25, 8.0], [12.15, 7.75], [12.25, 7.5], [12.15, 7.25], [12.25, 7.0], [12.03, 6.47], [11.68, 6.32], [11.53, 5.97], [11.0, 5.75], [10.75, 5.85], [10.5, 5.75], [10.25, 5.85], [10.0, 5.75], [9.47, 5.97], [9.32, 6.32], [8.97, 6.47], [8.75, 7.0], [8.85, 7.25], [8.75, 7.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.6583800741122445}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.175733764610178}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.508087003404455, 31.99682743819841, 31.393638534133515, 31.5700681275099, 29.960766114980515]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.91972091711517, 33.597651078431625, 33.666006973501965, 34.05300846109458, 33.44808652693081]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.0478262438014134, 2.1700567426838435, 2.20541008919161, 2.317150401227844, 1.909785564423665]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.3589530300108663, 2.742115468639838, 2.893438916847458, 3.6583800741122445, 2.4795002472661736]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.531252347793335, 1.6506417773819904, 1.6990991078276412, 1.8954613953660475, 1.6051404866724777]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7778116995255393, 2.1276040494026356, 2.205964625931401, 2.502133749768831, 2.381936756488274]}}