{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:49.544061", "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-Apr-20_to_2025-Apr-22_25.5_-1.5"}, "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": 2025040002179}, "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": "April 20 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 22 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 74127.26578642573}, "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, The Democratic Republic of the"]}, "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": -1.5}, "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": 25.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[22.5, -0.25], [23.0, -0.46], [23.5, -0.25], [24.03, -0.47], [24.18, -0.82], [24.25, -0.85], [24.5, -0.75], [24.75, -0.85], [25.0, -0.75], [25.25, -0.85], [25.5, -0.75], [26.03, -0.97], [26.25, -1.5], [26.15, -1.75], [26.25, -2.0], [26.15, -2.25], [26.25, -2.5], [26.15, -2.75], [26.25, -3.0], [26.15, -3.25], [26.25, -3.5], [26.03, -4.03], [25.5, -4.25], [25.25, -4.15], [25.0, -4.25], [24.47, -4.03], [24.3, -3.62], [24.0, -3.75], [23.47, -3.53], [23.32, -3.18], [23.25, -3.15], [23.0, -3.25], [22.47, -3.03], [22.25, -2.5], [22.35, -2.25], [22.32, -2.18], [21.97, -2.03], [21.75, -1.5], [21.85, -1.25], [21.75, -1.0], [21.97, -0.47], [22.5, -0.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.75, -1.0], [21.97, -0.47], [22.5, -0.25], [23.0, -0.46], [23.5, -0.25], [24.03, -0.47], [24.18, -0.82], [24.25, -0.85], [24.5, -0.75], [24.75, -0.85], [25.0, -0.75], [25.25, -0.85], [25.5, -0.75], [26.03, -0.97], [26.25, -1.5], [26.15, -1.75], [26.25, -2.0], [26.15, -2.25], [26.25, -2.5], [26.15, -2.75], [26.25, -3.0], [26.15, -3.25], [26.25, -3.5], [26.03, -4.03], [25.5, -4.25], [25.25, -4.15], [25.0, -4.25], [24.47, -4.03], [24.3, -3.62], [24.0, -3.75], [23.47, -3.53], [23.32, -3.18], [23.25, -3.15], [23.0, -3.25], [22.47, -3.03], [22.25, -2.5], [22.35, -2.25], [22.32, -2.18], [21.97, -2.03], [21.75, -1.5], [21.85, -1.25], [21.75, -1.0]]]]}, "2025-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.75, -1.0], [21.97, -0.47], [22.5, -0.25], [23.0, -0.46], [23.5, -0.25], [24.03, -0.47], [24.18, -0.82], [24.25, -0.85], [24.5, -0.75], [24.75, -0.85], [25.0, -0.75], [25.25, -0.85], [25.5, -0.75], [26.03, -0.97], [26.25, -1.5], [26.15, -1.75], [26.25, -2.0], [26.15, -2.25], [26.25, -2.5], [26.15, -2.75], [26.25, -3.0], [26.15, -3.25], [26.25, -3.5], [26.03, -4.03], [25.5, -4.25], [25.25, -4.15], [25.0, -4.25], [24.47, -4.03], [24.3, -3.62], [24.0, -3.75], [23.47, -3.53], [23.32, -3.18], [23.25, -3.15], [23.0, -3.25], [22.47, -3.03], [22.25, -2.5], [22.35, -2.25], [22.32, -2.18], [21.97, -2.03], [21.75, -1.5], [21.85, -1.25], [21.75, -1.0]]]]}, "2025-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.75, -1.0], [21.97, -0.47], [22.5, -0.25], [23.0, -0.46], [23.5, -0.25], [24.03, -0.47], [24.18, -0.82], [24.25, -0.85], [24.5, -0.75], [24.75, -0.85], [25.0, -0.75], [25.25, -0.85], [25.5, -0.75], [26.03, -0.97], [26.25, -1.5], [26.15, -1.75], [26.25, -2.0], [26.15, -2.25], [26.25, -2.5], [26.15, -2.75], [26.25, -3.0], [26.15, -3.25], [26.25, -3.5], [26.03, -4.03], [25.5, -4.25], [25.25, -4.15], [25.0, -4.25], [24.47, -4.03], [24.3, -3.62], [24.0, -3.75], [23.47, -3.53], [23.32, -3.18], [23.25, -3.15], [23.0, -3.25], [22.47, -3.03], [22.25, -2.5], [22.35, -2.25], [22.32, -2.18], [21.97, -2.03], [21.75, -1.5], [21.85, -1.25], [21.75, -1.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.0926981688353408}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9859913470868575}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.327241516113304, 27.24580366346578, 26.780369906955286]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.706880187988304, 27.82545115152999, 27.49114125569662]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5392146681080163, 2.4412633077889745, 1.9774960653635816]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8531269001859414, 3.0926981688353408, 2.410750061105034]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5183852587721487, 2.3942666517931794, 1.887114353330398]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7647476525620844, 3.048087178840072, 2.3735000264109876]}}