{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:06.664105", "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": "2011-Dec-19_to_2011-Dec-23_38.5_-10.5"}, "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": 2011120001018}, "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": "December 19 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 23 2011"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 115566.20689295564}, "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": ["Mozambique", "Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "S.Eastern-Africa"]}, "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": ["Indian Ocean", "Mozambique Channel"]}, "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": -10.5}, "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": 38.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "38.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 37.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.25, -10.5], [37.47, -9.97], [38.0, -9.75], [38.25, -9.85], [38.5, -9.75], [38.75, -9.85], [39.0, -9.75], [39.53, -9.97], [39.68, -10.32], [39.75, -10.35], [40.0, -10.25], [40.53, -10.47], [40.7, -10.87], [41.0, -10.75], [41.53, -10.97], [41.75, -11.5], [41.65, -11.75], [41.75, -12.0], [41.53, -12.53], [41.0, -12.75], [40.75, -12.65], [40.68, -12.68], [40.53, -13.03], [40.0, -13.25], [39.47, -13.03], [39.32, -12.68], [38.97, -12.53], [38.75, -12.0], [38.85, -11.75], [38.82, -11.68], [38.75, -11.65], [38.5, -11.75], [37.97, -11.53], [37.82, -11.18], [37.47, -11.03], [37.25, -10.5]]]]}, "2011-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, -8.5], [36.97, -7.97], [37.32, -7.82], [37.47, -7.47], [38.0, -7.25], [38.53, -7.47], [38.68, -7.82], [38.75, -7.85], [39.0, -7.75], [39.53, -7.97], [39.68, -8.32], [40.03, -8.47], [40.18, -8.82], [40.25, -8.85], [40.5, -8.75], [41.03, -8.97], [41.25, -9.5], [41.15, -9.75], [41.25, -10.0], [41.04, -10.5], [41.18, -10.82], [41.53, -10.97], [41.75, -11.5], [41.65, -11.75], [41.75, -12.0], [41.53, -12.53], [41.0, -12.75], [40.75, -12.65], [40.68, -12.68], [40.53, -13.03], [40.0, -13.25], [39.47, -13.03], [39.32, -12.68], [38.97, -12.53], [38.75, -12.0], [38.85, -11.75], [38.82, -11.68], [38.75, -11.65], [38.5, -11.75], [37.97, -11.53], [37.82, -11.18], [37.47, -11.03], [37.25, -10.5], [37.46, -10.0], [37.25, -9.5], [37.35, -9.25], [37.32, -9.18], [36.97, -9.03], [36.75, -8.5]]]]}, "2011-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, -8.5], [36.97, -7.97], [37.32, -7.82], [37.47, -7.47], [38.0, -7.25], [38.53, -7.47], [38.68, -7.82], [38.75, -7.85], [39.0, -7.75], [39.53, -7.97], [39.68, -8.32], [40.03, -8.47], [40.18, -8.82], [40.25, -8.85], [40.5, -8.75], [41.03, -8.97], [41.25, -9.5], [41.15, -9.75], [41.25, -10.0], [41.15, -10.25], [41.25, -10.5], [41.15, -10.75], [41.18, -10.82], [41.53, -10.97], [41.75, -11.5], [41.65, -11.75], [41.75, -12.0], [41.53, -12.53], [41.0, -12.75], [40.75, -12.65], [40.68, -12.68], [40.53, -13.03], [40.0, -13.25], [39.47, -13.03], [39.32, -12.68], [38.97, -12.53], [38.75, -12.0], [38.85, -11.75], [38.82, -11.68], [38.75, -11.65], [38.5, -11.75], [37.97, -11.53], [37.82, -11.18], [37.47, -11.03], [37.25, -10.5], [37.46, -10.0], [37.25, -9.5], [37.35, -9.25], [37.32, -9.18], [36.97, -9.03], [36.75, -8.5]]]]}, "2011-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, -8.5], [36.97, -7.97], [37.32, -7.82], [37.47, -7.47], [38.0, -7.25], [38.53, -7.47], [38.68, -7.82], [38.75, -7.85], [39.0, -7.75], [39.53, -7.97], [39.68, -8.32], [40.03, -8.47], [40.18, -8.82], [40.25, -8.85], [40.5, -8.75], [41.03, -8.97], [41.25, -9.5], [41.15, -9.75], [41.25, -10.0], [41.15, -10.25], [41.25, -10.5], [41.15, -10.75], [41.25, -11.0], [41.15, -11.25], [41.25, -11.5], [41.03, -12.03], [40.5, -12.25], [39.97, -12.03], [39.82, -11.68], [39.47, -11.53], [39.25, -11.0], [39.35, -10.75], [39.32, -10.68], [39.25, -10.65], [39.18, -10.68], [39.03, -11.03], [38.5, -11.25], [37.97, -11.03], [37.75, -10.5], [37.88, -10.2], [37.47, -10.03], [37.25, -9.5], [37.35, -9.25], [37.32, -9.18], [36.97, -9.03], [36.75, -8.5]]]]}, "2011-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.5, -9.75], [41.03, -9.97], [41.25, -10.5], [41.03, -11.03], [40.5, -11.25], [39.97, -11.03], [39.75, -10.5], [39.97, -9.97], [40.5, -9.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.831166280363334}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0638487629227327}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.963405181531982, 24.72922413386516, 24.454509135944875, 25.216481072739043, 26.71975794596841]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.705263101767684, 22.502146645491223, 22.311705220305953, 23.700664492256692, 26.71975794596841]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5251986271089324, -1.9483161141037797, -2.2637978026317582, -1.675121177124247, -1.5384349424501806]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.831166280363334, -3.3157124392653827, -3.2775410522767174, -2.57281936056188, -1.5384349424501806]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0450191521833063, -1.753483485184197, -2.1569372168954843, -1.6254694090869952, -1.533278622847703]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7967215703024357, -2.206971048282516, -2.9365618425625177, -1.9607629499297459, -1.533278622847703]}}