{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:09.313432", "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-Sep-11_to_2022-Sep-13_33.5_-4.0"}, "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": 2022090001844}, "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": "September 11 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 13 2022"}, "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": 64778.74896233823}, "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": ["Kenya", "Tanzania, United Republic of"]}, "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": -4.0}, "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": 33.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[33.25, -3.35], [33.32, -3.32], [33.47, -2.97], [33.82, -2.82], [33.97, -2.47], [34.32, -2.32], [34.47, -1.97], [34.82, -1.82], [34.97, -1.47], [35.5, -1.25], [35.75, -1.35], [36.0, -1.25], [36.53, -1.47], [36.75, -2.0], [36.65, -2.25], [36.75, -2.5], [36.53, -3.03], [36.18, -3.18], [36.03, -3.53], [35.63, -3.7], [35.75, -4.0], [35.53, -4.53], [35.18, -4.68], [35.03, -5.03], [34.68, -5.18], [34.53, -5.53], [34.0, -5.75], [33.47, -5.53], [33.32, -5.18], [33.25, -5.15], [33.0, -5.25], [32.75, -5.15], [32.5, -5.25], [31.97, -5.03], [31.75, -4.5], [31.97, -3.97], [32.32, -3.82], [32.47, -3.47], [33.0, -3.25], [33.25, -3.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, -3.47], [33.0, -3.25], [33.25, -3.35], [33.32, -3.32], [33.47, -2.97], [33.82, -2.82], [33.97, -2.47], [34.32, -2.32], [34.47, -1.97], [34.82, -1.82], [34.97, -1.47], [35.5, -1.25], [35.75, -1.35], [36.0, -1.25], [36.53, -1.47], [36.75, -2.0], [36.65, -2.25], [36.75, -2.5], [36.53, -3.03], [36.18, -3.18], [36.03, -3.53], [35.63, -3.7], [35.75, -4.0], [35.53, -4.53], [35.18, -4.68], [35.03, -5.03], [34.68, -5.18], [34.53, -5.53], [34.0, -5.75], [33.47, -5.53], [33.32, -5.18], [33.25, -5.15], [33.0, -5.25], [32.75, -5.15], [32.5, -5.25], [31.97, -5.03], [31.75, -4.5], [31.97, -3.97], [32.32, -3.82], [32.47, -3.47]]]]}, "2022-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, -3.47], [33.0, -3.25], [33.25, -3.35], [33.32, -3.32], [33.47, -2.97], [33.82, -2.82], [33.97, -2.47], [34.32, -2.32], [34.47, -1.97], [34.82, -1.82], [34.97, -1.47], [35.5, -1.25], [35.75, -1.35], [36.0, -1.25], [36.53, -1.47], [36.75, -2.0], [36.65, -2.25], [36.75, -2.5], [36.53, -3.03], [36.18, -3.18], [36.03, -3.53], [35.63, -3.7], [35.75, -4.0], [35.53, -4.53], [35.18, -4.68], [35.03, -5.03], [34.68, -5.18], [34.53, -5.53], [34.0, -5.75], [33.47, -5.53], [33.32, -5.18], [33.25, -5.15], [33.0, -5.25], [32.75, -5.15], [32.5, -5.25], [31.97, -5.03], [31.75, -4.5], [31.97, -3.97], [32.32, -3.82], [32.47, -3.47]]]]}, "2022-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, -3.47], [33.0, -3.25], [33.25, -3.35], [33.32, -3.32], [33.47, -2.97], [33.82, -2.82], [33.97, -2.47], [34.32, -2.32], [34.47, -1.97], [34.82, -1.82], [34.97, -1.47], [35.5, -1.25], [35.75, -1.35], [36.0, -1.25], [36.53, -1.47], [36.75, -2.0], [36.65, -2.25], [36.75, -2.5], [36.53, -3.03], [36.18, -3.18], [36.03, -3.53], [35.63, -3.7], [35.75, -4.0], [35.53, -4.53], [35.18, -4.68], [35.03, -5.03], [34.68, -5.18], [34.53, -5.53], [34.0, -5.75], [33.47, -5.53], [33.32, -5.18], [33.25, -5.15], [33.0, -5.25], [32.75, -5.15], [32.5, -5.25], [31.97, -5.03], [31.75, -4.5], [31.97, -3.97], [32.32, -3.82], [32.47, -3.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.118006640165504}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.503765160037831}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.759355905519385, 25.070587636150208, 25.034540045736378]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.742480503024296, 28.93787469578325, 28.939181134180217]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.3615195561812168, 1.6231203475807878, 1.5266555763514886]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.7136577056763258, 2.118006640165504, 1.998116837587986]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.676945142614605, 2.001400625188273, 1.878755360704962]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0587495391730783, 2.4760394362857134, 2.528049303675624]}}