{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:27.362345", "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": "2023-May-12_to_2023-May-14_36.5_-17.5"}, "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": 2023050001828}, "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": "May 12 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 14 2023"}, "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": 59027.092432549216}, "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": ["Malawi", "Mozambique"]}, "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": -17.5}, "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": 36.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[34.75, -17.5], [34.97, -16.97], [35.32, -16.82], [35.38, -16.7], [34.97, -16.53], [34.75, -16.0], [34.97, -15.47], [35.5, -15.25], [35.75, -15.35], [36.0, -15.25], [36.53, -15.47], [36.68, -15.82], [36.75, -15.85], [37.0, -15.75], [37.53, -15.97], [37.68, -16.32], [37.75, -16.35], [37.82, -16.32], [37.97, -15.97], [38.5, -15.75], [39.03, -15.97], [39.25, -16.5], [39.15, -16.75], [39.25, -17.0], [39.03, -17.53], [38.5, -17.75], [38.25, -17.65], [38.0, -17.75], [37.75, -17.65], [37.68, -17.68], [37.53, -18.03], [37.18, -18.18], [37.03, -18.53], [36.68, -18.68], [36.53, -19.03], [36.18, -19.18], [36.03, -19.53], [35.5, -19.75], [34.97, -19.53], [34.75, -19.0], [34.85, -18.75], [34.75, -18.5], [34.96, -18.0], [34.75, -17.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -18.5], [34.96, -18.0], [34.75, -17.5], [34.97, -16.97], [35.32, -16.82], [35.38, -16.7], [34.97, -16.53], [34.75, -16.0], [34.97, -15.47], [35.5, -15.25], [35.75, -15.35], [36.0, -15.25], [36.53, -15.47], [36.68, -15.82], [36.75, -15.85], [37.0, -15.75], [37.53, -15.97], [37.68, -16.32], [37.75, -16.35], [37.82, -16.32], [37.97, -15.97], [38.5, -15.75], [39.03, -15.97], [39.25, -16.5], [39.15, -16.75], [39.25, -17.0], [39.03, -17.53], [38.5, -17.75], [38.25, -17.65], [38.0, -17.75], [37.75, -17.65], [37.68, -17.68], [37.53, -18.03], [37.18, -18.18], [37.03, -18.53], [36.68, -18.68], [36.53, -19.03], [36.18, -19.18], [36.03, -19.53], [35.5, -19.75], [34.97, -19.53], [34.75, -19.0], [34.85, -18.75], [34.75, -18.5]]]]}, "2023-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -18.5], [34.96, -18.0], [34.75, -17.5], [34.97, -16.97], [35.32, -16.82], [35.38, -16.7], [34.97, -16.53], [34.75, -16.0], [34.97, -15.47], [35.5, -15.25], [35.75, -15.35], [36.0, -15.25], [36.53, -15.47], [36.68, -15.82], [36.75, -15.85], [37.0, -15.75], [37.53, -15.97], [37.68, -16.32], [37.75, -16.35], [37.82, -16.32], [37.97, -15.97], [38.5, -15.75], [39.03, -15.97], [39.25, -16.5], [39.15, -16.75], [39.25, -17.0], [39.03, -17.53], [38.5, -17.75], [38.25, -17.65], [38.0, -17.75], [37.75, -17.65], [37.68, -17.68], [37.53, -18.03], [37.18, -18.18], [37.03, -18.53], [36.68, -18.68], [36.53, -19.03], [36.18, -19.18], [36.03, -19.53], [35.5, -19.75], [34.97, -19.53], [34.75, -19.0], [34.85, -18.75], [34.75, -18.5]]]]}, "2023-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -18.5], [34.96, -18.0], [34.75, -17.5], [34.97, -16.97], [35.32, -16.82], [35.38, -16.7], [34.97, -16.53], [34.75, -16.0], [34.97, -15.47], [35.5, -15.25], [35.75, -15.35], [36.0, -15.25], [36.53, -15.47], [36.68, -15.82], [36.75, -15.85], [37.0, -15.75], [37.53, -15.97], [37.68, -16.32], [37.75, -16.35], [37.82, -16.32], [37.97, -15.97], [38.5, -15.75], [39.03, -15.97], [39.25, -16.5], [39.15, -16.75], [39.25, -17.0], [39.03, -17.53], [38.5, -17.75], [38.25, -17.65], [38.0, -17.75], [37.75, -17.65], [37.68, -17.68], [37.53, -18.03], [37.18, -18.18], [37.03, -18.53], [36.68, -18.68], [36.53, -19.03], [36.18, -19.18], [36.03, -19.53], [35.5, -19.75], [34.97, -19.53], [34.75, -19.0], [34.85, -18.75], [34.75, -18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.082753764307597}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.2332120650334986}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.741762774925633, 24.8862394532577, 24.20808490290233]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.667033760336665, 25.729294602515495, 25.260840873513985]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.3024127098800333, 2.5124141419593142, 1.8848093432611477]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.9656153589014593, 3.082753764307597, 2.3633980858658106]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7404285833761481, 1.9010545401860477, 1.4420431028250964]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2758383651274334, 2.3706016356639266, 1.839127480763283]}}