{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:07.102232", "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": "2025-Mar-14_to_2025-Mar-20_10.5_-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": 2025030001756}, "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": "March 14 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 20 2025"}, "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": 86275.8647817391}, "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": ["Congo", "Gabon"]}, "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": ["Atlantic Ocean"]}, "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": 10.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "10.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 8.5}, "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": -5.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[9.35, -3.75], [9.25, -3.5], [9.35, -3.25], [9.25, -3.0], [9.47, -2.47], [10.0, -2.25], [10.53, -2.47], [10.68, -2.82], [10.75, -2.85], [10.82, -2.82], [10.97, -2.47], [11.5, -2.25], [12.03, -2.47], [12.25, -3.0], [12.15, -3.25], [12.25, -3.5], [12.04, -4.0], [12.25, -4.5], [12.15, -4.75], [12.25, -5.0], [12.03, -5.53], [11.68, -5.68], [11.53, -6.03], [11.0, -6.25], [10.75, -6.15], [10.5, -6.25], [10.25, -6.15], [10.0, -6.25], [9.5, -6.04], [9.0, -6.25], [8.75, -6.15], [8.5, -6.25], [7.97, -6.03], [7.75, -5.5], [7.85, -5.25], [7.75, -5.0], [7.85, -4.75], [7.75, -4.5], [7.97, -3.97], [8.5, -3.75], [8.75, -3.85], [9.0, -3.75], [9.25, -3.85], [9.32, -3.82], [9.35, -3.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "Equatorial.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, -5.03], [8.75, -4.5], [8.97, -3.97], [9.5, -3.75], [9.75, -3.85], [10.0, 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over entire duration", "value": 1.6170566964764248}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.0579003623692564}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.546100616455078, 28.493982008391754, 28.55903693305123, 28.559535827636694, 28.43959354498452, 27.93710945977108, 26.830159759521507]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.587913767496786, 28.82949345906576, 28.77705790201827, 28.787472025553427, 29.011755879720056, 28.64188919067385, 27.247070566813193]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9199396213114255, 1.0256319578310007, 1.0237477948127751, 1.0629328989469673, 1.1722981116264573, 0.958828965466291, 1.106810386202805]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.9898819869229101, 1.3021815124144496, 1.345444626009055, 1.4416564304395934, 1.6170566964764248, 1.2221228380772118, 1.258284136981672]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4477040041641103, 1.692432121907041, 1.77851438563049, 1.8728041532342388, 2.0204339843552566, 1.6014966883324109, 1.4722464066259142]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.539768567847469, 2.1299966430278143, 2.1660931352828934, 2.5412383073153246, 2.8359208132091265, 2.2752380463795903, 1.6451666155968896]}}