{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:18.522463", "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-Oct-31_to_2022-Nov-03_28.5_-12.5"}, "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": 2022100002965}, "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": "October 31 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 03 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": 51430.20942516075}, "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", "Zambia"]}, "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": -12.5}, "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": 28.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 28.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 31.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[28.25, -10.85], [28.32, -10.82], [28.47, -10.47], [28.82, -10.32], [28.97, -9.97], [29.5, -9.75], [29.75, -9.85], [30.0, -9.75], [30.53, -9.97], [30.75, -10.5], [30.53, -11.03], [30.13, -11.2], [30.18, -11.32], [30.25, -11.35], [30.5, -11.25], [31.03, -11.47], [31.18, -11.82], [31.53, -11.97], [31.75, -12.5], [31.53, -13.03], [31.0, -13.25], [30.75, -13.15], [30.5, -13.25], [30.25, -13.15], [30.0, -13.25], [29.5, -13.04], [29.0, -13.25], [28.75, -13.15], [28.5, -13.25], [27.97, -13.03], [27.82, -12.68], [27.47, -12.53], [27.25, -12.0], [27.35, -11.75], [27.25, -11.5], [27.47, -10.97], [28.0, -10.75], [28.25, -10.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa", "E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.75, -12.0], [27.85, -11.75], [27.75, -11.5], [27.97, -10.97], [28.32, -10.82], [28.47, -10.47], [28.82, -10.32], [28.97, -9.97], [29.5, -9.75], [29.75, -9.85], [30.0, -9.75], [30.53, -9.97], [30.75, -10.5], [30.53, -11.03], [30.13, -11.2], [30.18, -11.32], [30.25, -11.35], [30.5, -11.25], [31.03, -11.47], [31.18, -11.82], [31.53, -11.97], [31.75, -12.5], [31.53, -13.03], [31.0, -13.25], [30.75, -13.15], [30.5, -13.25], [30.25, -13.15], [30.0, -13.25], [29.5, -13.04], [29.0, -13.25], [28.75, -13.15], [28.5, -13.25], [27.97, -13.03], [27.75, -12.5], [27.85, -12.25], [27.75, -12.0]]]]}, "2022-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.25, -11.5], [27.47, -10.97], [28.0, -10.75], [28.25, -10.85], [28.32, -10.82], [28.47, -10.47], [28.82, -10.32], [28.97, -9.97], [29.5, -9.75], [29.75, -9.85], [30.0, -9.75], [30.53, -9.97], [30.75, -10.5], [30.53, -11.03], [30.13, -11.2], [30.18, -11.32], [30.25, -11.35], [30.5, -11.25], [31.03, -11.47], [31.18, -11.82], [31.53, -11.97], [31.75, -12.5], [31.53, -13.03], [31.0, -13.25], [30.75, -13.15], [30.5, -13.25], [30.25, -13.15], [30.0, -13.25], [29.5, -13.04], [29.0, -13.25], [28.75, -13.15], [28.5, -13.25], [27.97, -13.03], [27.82, -12.68], [27.47, -12.53], [27.25, -12.0], [27.35, -11.75], [27.25, -11.5]]]]}, "2022-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.25, -11.5], [27.47, -10.97], [28.0, -10.75], [28.25, -10.85], [28.32, -10.82], [28.47, -10.47], [28.82, -10.32], [28.97, -9.97], [29.5, -9.75], [29.75, -9.85], [30.0, -9.75], [30.53, -9.97], [30.75, -10.5], [30.53, -11.03], [30.13, -11.2], [30.18, -11.32], [30.25, -11.35], [30.5, -11.25], [31.03, -11.47], [31.18, -11.82], [31.53, -11.97], [31.75, -12.5], [31.53, -13.03], [31.0, -13.25], [30.75, -13.15], [30.5, -13.25], [30.25, -13.15], [30.0, -13.25], [29.5, -13.04], [29.0, -13.25], [28.75, -13.15], [28.5, -13.25], [27.97, -13.03], [27.82, -12.68], [27.47, -12.53], [27.25, -12.0], [27.35, -11.75], [27.25, -11.5]]]]}, "2022-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.25, -11.5], [27.47, -10.97], [28.0, -10.75], [28.53, -10.97], [28.75, -11.5], [28.65, -11.75], [28.75, -12.0], [28.53, -12.53], [28.0, -12.75], [27.47, -12.53], [27.25, -12.0], [27.35, -11.75], [27.25, -11.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.220804380618574}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.4084647954200102}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.587255695846636, 28.107325658888954, 27.84420466507487, 27.23353658723329]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.787877630901164, 29.4375436348501, 29.237278588485253, 27.638368622286123]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9625086862680292, 2.650268238569946, 2.555729298765407, 2.4460580688495384]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.521209023344454, 3.175981103491722, 3.220804380618574, 2.640428383326878]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2207648950902026, 1.5589606187078524, 1.412625177508, 1.317859608919199]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4296926415094295, 1.793710779952379, 1.746750685008649, 1.3990476682040054]}}