{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:21.323832", "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-Jan-30_to_2025-Feb-03_15.5_-16.0"}, "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": 2025010002593}, "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 30 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 03 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 85824.86137696105}, "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": ["Angola", "Namibia"]}, "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": -16.0}, "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": 15.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "15.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[14.32, -16.68], [13.97, -16.53], [13.75, -16.0], [13.97, -15.47], [14.32, -15.32], [14.47, -14.97], [15.0, -14.75], [15.25, -14.85], [15.5, -14.75], [15.75, -14.85], [16.0, -14.75], [16.53, -14.97], [16.68, -15.32], [16.75, -15.35], [17.0, -15.25], [17.25, -15.35], [17.5, -15.25], [18.03, -15.47], [18.25, -16.0], [18.15, -16.25], [18.25, -16.5], [18.03, -17.03], [17.68, -17.18], [17.65, -17.25], [17.75, -17.5], [17.53, -18.03], [17.0, -18.25], [16.75, -18.15], [16.5, -18.25], [16.25, -18.15], [16.18, -18.18], [16.03, -18.53], [15.68, -18.68], [15.53, -19.03], [15.0, -19.25], [14.47, -19.03], [14.32, -18.68], [13.97, -18.53], [13.75, -18.0], [13.85, -17.75], [13.75, -17.5], [13.97, -16.97], [14.38, -16.8], [14.32, -16.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.25, -15.5], [14.47, -14.97], [15.0, -14.75], [15.25, -14.85], [15.5, -14.75], [15.75, -14.85], [16.0, -14.75], [16.53, -14.97], [16.68, -15.32], [17.03, -15.47], [17.25, -16.0], [17.03, -16.53], [16.68, -16.68], [16.53, -17.03], [16.0, -17.25], [15.75, -17.15], [15.5, -17.25], [14.97, -17.03], [14.82, -16.68], [14.47, -16.53], [14.25, -16.0], [14.35, -15.75], [14.25, -15.5]]]]}, "2025-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.75, -17.5], [13.97, -16.97], [14.38, -16.8], [14.32, -16.68], [13.97, -16.53], [13.75, -16.0], [13.97, -15.47], [14.32, -15.32], [14.47, -14.97], [15.0, -14.75], [15.25, -14.85], [15.5, -14.75], [15.75, -14.85], [16.0, -14.75], [16.53, -14.97], [16.68, -15.32], [16.75, -15.35], [17.0, -15.25], [17.25, -15.35], [17.5, -15.25], [18.03, -15.47], [18.25, -16.0], [18.03, -16.53], [17.5, -16.75], [17.25, -16.65], [17.18, -16.68], [17.15, -16.75], [17.25, -17.0], [17.15, -17.25], [17.25, -17.5], [17.03, -18.03], [16.5, -18.25], [16.25, -18.15], [16.18, -18.18], [16.03, -18.53], [15.68, -18.68], [15.53, -19.03], [15.0, -19.25], [14.47, -19.03], [14.32, -18.68], [13.97, -18.53], [13.75, -18.0], [13.85, -17.75], [13.75, -17.5]]]]}, "2025-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.75, -17.5], [13.97, -16.97], [14.38, -16.8], [14.32, -16.68], [13.97, -16.53], [13.75, -16.0], [13.97, -15.47], [14.32, -15.32], [14.47, -14.97], [15.0, -14.75], [15.25, -14.85], [15.5, -14.75], [15.75, -14.85], [16.0, -14.75], [16.53, -14.97], [16.68, -15.32], [16.75, -15.35], [17.0, -15.25], [17.25, -15.35], [17.5, -15.25], [18.03, -15.47], [18.25, -16.0], [18.15, -16.25], [18.25, -16.5], [18.03, -17.03], [17.68, -17.18], [17.65, -17.25], [17.75, -17.5], [17.53, -18.03], [17.0, -18.25], [16.75, -18.15], [16.5, -18.25], [16.25, -18.15], [16.18, -18.18], [16.03, -18.53], [15.68, -18.68], [15.53, -19.03], [15.0, -19.25], [14.47, -19.03], [14.32, -18.68], [13.97, -18.53], [13.75, -18.0], [13.85, -17.75], [13.75, -17.5]]]]}, "2025-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.75, -17.5], [13.97, -16.97], [14.38, -16.8], [14.32, -16.68], [13.97, -16.53], [13.75, -16.0], [13.97, -15.47], [14.32, -15.32], [14.47, -14.97], [15.0, -14.75], [15.25, -14.85], [15.5, -14.75], [15.75, -14.85], [16.0, -14.75], [16.53, -14.97], [16.68, -15.32], [16.75, -15.35], [17.0, -15.25], [17.25, -15.35], [17.5, -15.25], [18.03, -15.47], [18.25, -16.0], [18.15, -16.25], [18.25, -16.5], [18.03, -17.03], [17.68, -17.18], [17.65, -17.25], [17.75, -17.5], [17.53, -18.03], [17.0, -18.25], [16.75, -18.15], [16.5, -18.25], [16.25, -18.15], [16.18, -18.18], [16.03, -18.53], [15.68, -18.68], [15.53, -19.03], [15.0, -19.25], [14.47, -19.03], [14.32, -18.68], [13.97, -18.53], [13.75, -18.0], [13.85, -17.75], [13.75, -17.5]]]]}, "2025-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.75, -17.5], [13.97, -16.97], [14.38, -16.8], [14.32, -16.68], [13.97, -16.53], [13.75, -16.0], [13.97, -15.47], [14.32, -15.32], [14.47, -14.97], [15.0, -14.75], [15.25, -14.85], [15.5, -14.75], [15.75, -14.85], [16.0, -14.75], [16.53, -14.97], [16.68, -15.32], [16.75, -15.35], [17.0, -15.25], [17.25, -15.35], [17.5, -15.25], [18.03, -15.47], [18.25, -16.0], [18.15, -16.25], [18.25, -16.5], [18.03, -17.03], [17.68, -17.18], [17.65, -17.25], [17.75, -17.5], [17.53, -18.03], [17.0, -18.25], [16.75, -18.15], [16.5, -18.25], [16.25, -18.15], [16.18, -18.18], [16.03, -18.53], [15.68, -18.68], [15.53, -19.03], [15.0, -19.25], [14.47, -19.03], [14.32, -18.68], [13.97, -18.53], [13.75, -18.0], [13.85, -17.75], [13.75, -17.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.333909084695108}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.209244362055485}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.21053678724502, 26.56525466918947, 26.725202748967376, 27.36564236344958, 26.742564864385713]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.08450597127279, 29.11648839314779, 28.40137125651046, 28.94879048665365, 30.234136199951195]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.350660156203383, 2.929785395227666, 3.151469510437047, 3.7858816773180983, 3.197341525544175]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.7403339950664076, 3.857232404374713, 4.238231500707286, 5.333909084695108, 4.742946435821693]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5285130625900958, 1.6923015342898284, 1.8638588310428816, 2.2042575713347277, 1.7832563156875127]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8388891793103417, 2.4183456576875666, 2.938210929389595, 3.598933003019313, 2.4734498323368954]}}