{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:58.294116", "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-05_to_2022-Jan-08_9.5_0.0"}, "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": 2022010001623}, "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 05 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 08 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 58727.41945010657}, "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": ["Gabon"]}, "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": ["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": 0.0}, "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": 7.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 10.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 1.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[6.47, -1.03], [6.25, -0.5], [6.35, -0.25], [6.25, 0.0], [6.47, 0.53], [6.82, 0.68], [6.97, 1.03], [7.5, 1.25], [7.75, 1.15], [8.0, 1.25], [8.25, 1.15], [8.5, 1.25], [8.75, 1.15], [8.82, 1.18], [8.85, 1.25], [8.75, 1.5], [8.97, 2.03], [9.5, 2.25], [10.03, 2.03], [10.25, 1.5], [10.15, 1.25], [10.25, 1.0], [10.15, 0.75], [10.18, 0.68], [10.53, 0.53], [10.75, 0.0], [10.65, -0.25], [10.75, -0.5], [10.53, -1.03], [10.18, -1.18], [10.03, -1.53], [9.5, -1.75], [8.97, -1.53], [8.75, -1.0], [8.85, -0.75], [8.82, -0.68], [8.75, -0.65], [8.5, -0.75], [8.25, -0.65], [8.18, -0.68], [8.03, -1.03], [7.5, -1.25], [7.25, -1.15], [7.0, -1.25], [6.47, -1.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa", "Central-Africa", "Equatorial.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.25, 0.0], [6.47, 0.53], [6.82, 0.68], [6.97, 1.03], [7.5, 1.25], [7.75, 1.15], [8.0, 1.25], [8.25, 1.15], [8.5, 1.25], [8.75, 1.15], [8.82, 1.18], [8.85, 1.25], [8.75, 1.5], [8.97, 2.03], [9.5, 2.25], [10.03, 2.03], [10.25, 1.5], [10.15, 1.25], [10.25, 1.0], [10.15, 0.75], [10.18, 0.68], [10.53, 0.53], [10.75, 0.0], [10.65, -0.25], [10.75, -0.5], [10.53, -1.03], [10.18, -1.18], [10.03, -1.53], [9.5, -1.75], [8.97, -1.53], [8.75, -1.0], [8.85, -0.75], [8.82, -0.68], [8.75, -0.65], [8.5, -0.75], [8.25, -0.65], [8.18, -0.68], [8.03, -1.03], [7.5, -1.25], [7.25, -1.15], [7.0, -1.25], [6.47, -1.03], [6.25, -0.5], [6.35, -0.25], [6.25, 0.0]]]]}, "2022-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.25, 0.0], [6.47, 0.53], [6.82, 0.68], [6.97, 1.03], [7.5, 1.25], [7.75, 1.15], [8.0, 1.25], [8.25, 1.15], [8.5, 1.25], [8.75, 1.15], [8.82, 1.18], [8.85, 1.25], [8.75, 1.5], [8.97, 2.03], [9.5, 2.25], [10.03, 2.03], [10.25, 1.5], [10.15, 1.25], [10.25, 1.0], [10.15, 0.75], [10.18, 0.68], [10.53, 0.53], [10.75, 0.0], [10.65, -0.25], [10.75, -0.5], [10.53, -1.03], [10.18, -1.18], [10.03, -1.53], [9.5, -1.75], [8.97, -1.53], [8.75, -1.0], [8.85, -0.75], [8.82, -0.68], [8.75, -0.65], [8.5, -0.75], [8.25, -0.65], [8.18, -0.68], [8.03, -1.03], [7.5, -1.25], [7.25, -1.15], [7.0, -1.25], [6.47, -1.03], [6.25, -0.5], [6.35, -0.25], [6.25, 0.0]]]]}, "2022-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.25, 0.0], [6.47, 0.53], [6.82, 0.68], [6.97, 1.03], [7.5, 1.25], [7.75, 1.15], [8.0, 1.25], [8.25, 1.15], [8.5, 1.25], [8.75, 1.15], [8.82, 1.18], [8.85, 1.25], [8.75, 1.5], [8.97, 2.03], [9.5, 2.25], [10.03, 2.03], [10.25, 1.5], [10.15, 1.25], [10.25, 1.0], [10.15, 0.75], [10.18, 0.68], [10.53, 0.53], [10.75, 0.0], [10.65, -0.25], [10.75, -0.5], [10.53, -1.03], [10.18, -1.18], [10.03, -1.53], [9.5, -1.75], [8.97, -1.53], [8.75, -1.0], [8.85, -0.75], [8.82, -0.68], [8.75, -0.65], [8.5, -0.75], [8.25, -0.65], [8.18, -0.68], [8.03, -1.03], [7.5, -1.25], [7.25, -1.15], [7.0, -1.25], [6.47, -1.03], [6.25, -0.5], [6.35, -0.25], [6.25, 0.0]]]]}, "2022-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 0.53], [7.0, 0.75], [7.53, 0.53], [7.75, 0.0], [7.65, -0.25], [7.75, -0.5], [7.53, -1.03], [7.0, -1.25], [6.47, -1.03], [6.25, -0.5], [6.35, -0.25], [6.25, 0.0], [6.47, 0.53]]], [[[8.85, -0.25], [8.75, 0.0], [8.85, 0.25], [8.75, 0.5], [8.85, 0.75], [8.75, 1.0], [8.85, 1.25], [8.75, 1.5], [8.97, 2.03], [9.5, 2.25], [10.03, 2.03], [10.25, 1.5], [10.15, 1.25], [10.25, 1.0], [10.15, 0.75], [10.18, 0.68], [10.53, 0.53], [10.75, 0.0], [10.65, -0.25], [10.75, -0.5], [10.53, -1.03], [10.18, -1.18], [10.03, -1.53], [9.5, -1.75], [8.97, -1.53], [8.75, -1.0], [8.85, -0.75], [8.75, -0.5], [8.85, -0.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.4944945008635386}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 0.9506788452137475}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.099654709311267, 27.185689769298108, 27.17353915375446, 27.194199123183466]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.344696283537644, 27.352217753505897, 27.38697914173713, 27.563225478559104]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9005349642161521, 0.959219032369001, 0.9241522647773135, 1.0801263663434213]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.3695626119741746, 1.3717939362612128, 1.353013680625054, 1.4944945008635386]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7302180160903846, 1.8587527747525188, 1.7374376934494027, 1.822670007099879]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0342752391573233, 2.348655940589776, 2.009627583350467, 2.073644629333394]}}