{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:49.433213", "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": "2024-May-16_to_2024-May-22_21.5_-11.5"}, "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": 2024050000386}, "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 16 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 22 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 135803.96061594505}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-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": []}, "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": -11.5}, "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": 21.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "21.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.0, -11.25], [23.53, -11.47], [23.75, -12.0], [23.53, -12.53], [23.18, -12.68], [23.03, -13.03], [22.5, -13.25], [21.97, -13.03], [21.75, -12.5], [21.97, -11.97], [22.32, -11.82], [22.47, -11.47], [23.0, -11.25]]]]}, "2024-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.97, -12.47], [18.5, -12.25], [18.75, -12.35], [19.0, -12.25], [19.3, -12.37], [19.47, -11.97], [20.0, -11.75], [20.43, -11.93], [20.25, -11.5], [20.47, -10.97], [21.0, -10.75], [21.25, -10.85], [21.5, -10.75], [21.75, -10.85], [22.0, -10.75], [22.25, -10.85], [22.5, -10.75], [23.03, -10.97], [23.18, -11.32], [23.53, -11.47], [23.75, -12.0], [23.53, -12.53], [23.18, -12.68], [23.03, -13.03], [22.5, -13.25], [21.97, -13.03], [21.82, -12.68], [21.47, -12.53], [21.32, -12.18], [21.25, -12.15], [21.0, -12.25], [20.57, -12.07], [20.75, -12.5], [20.53, -13.03], [20.0, -13.25], [19.7, -13.12], [19.54, -13.5], [19.75, -14.0], [19.53, -14.53], [19.0, -14.75], [18.47, -14.53], [18.32, -14.18], [17.97, -14.03], [17.75, -13.5], [17.85, -13.25], [17.75, -13.0], [17.97, -12.47]]]]}, "2024-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.97, -12.47], [18.5, -12.25], [18.75, -12.35], [19.0, -12.25], [19.3, -12.37], [19.47, -11.97], [20.0, -11.75], [20.43, -11.93], [20.25, -11.5], [20.47, -10.97], [21.0, -10.75], [21.25, -10.85], [21.5, -10.75], [21.75, -10.85], [22.0, -10.75], [22.25, -10.85], [22.5, -10.75], [23.03, -10.97], [23.18, -11.32], [23.53, -11.47], [23.75, -12.0], [23.53, -12.53], [23.18, -12.68], [23.03, -13.03], [22.5, -13.25], [21.97, -13.03], [21.82, -12.68], [21.47, -12.53], [21.32, -12.18], [21.25, -12.15], [21.0, -12.25], [20.57, -12.07], [20.75, -12.5], [20.53, -13.03], [20.0, -13.25], [19.7, -13.12], [19.54, -13.5], [19.75, -14.0], [19.53, -14.53], [19.0, -14.75], [18.47, -14.53], [18.32, -14.18], [17.97, -14.03], [17.75, -13.5], [17.85, -13.25], [17.75, -13.0], [17.97, -12.47]]]]}, "2024-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.85, -13.75], [17.75, -13.5], [17.85, -13.25], [17.75, -13.0], [17.97, -12.47], [18.5, -12.25], [18.75, -12.35], [18.82, -12.32], [18.97, -11.97], [19.32, -11.82], [19.35, -11.75], [19.25, -11.5], [19.47, -10.97], [19.82, -10.82], [19.85, -10.75], [19.75, -10.5], [19.97, -9.97], [20.5, -9.75], [20.75, -9.85], [21.0, -9.75], [21.25, -9.85], [21.5, -9.75], [21.75, -9.85], [22.0, -9.75], [22.53, -9.97], [22.75, -10.5], [22.63, -10.8], [23.03, -10.97], [23.18, -11.32], [23.53, -11.47], [23.68, -11.82], [24.03, -11.97], [24.25, -12.5], [24.03, -13.03], [23.5, -13.25], [23.25, -13.15], [23.0, -13.25], [22.75, -13.15], [22.5, -13.25], [21.97, -13.03], [21.82, -12.68], [21.7, -12.62], [21.53, -13.03], [21.18, -13.18], [21.15, -13.25], [21.25, -13.5], [21.03, -14.03], [20.68, -14.18], [20.53, -14.53], [20.18, -14.68], [20.03, -15.03], [19.5, -15.25], [19.25, -15.15], [19.0, -15.25], [18.75, -15.15], [18.5, -15.25], [17.97, -15.03], [17.75, -14.5], [17.85, -14.25], [17.75, -14.0], [17.85, -13.75]]]]}, "2024-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.85, -13.75], [17.75, -13.5], [17.85, -13.25], [17.75, -13.0], [17.97, -12.47], [18.32, -12.32], [18.47, -11.97], [18.82, -11.82], [18.97, -11.47], [19.32, -11.32], [19.47, -10.97], [19.82, -10.82], [19.85, -10.75], [19.75, -10.5], [19.97, -9.97], [20.5, -9.75], [20.75, -9.85], [21.0, -9.75], [21.25, -9.85], [21.5, -9.75], [21.75, -9.85], [22.0, -9.75], [22.53, -9.97], [22.75, -10.5], [22.63, -10.8], [23.03, -10.97], [23.18, -11.32], [23.53, -11.47], [23.68, -11.82], [24.03, -11.97], [24.25, -12.5], [24.03, -13.03], [23.5, -13.25], [23.25, -13.15], [23.0, -13.25], [22.75, -13.15], [22.5, -13.25], [21.97, -13.03], [21.82, -12.68], [21.7, -12.62], [21.53, -13.03], [21.18, -13.18], [21.15, -13.25], [21.25, -13.5], [21.03, -14.03], [20.68, -14.18], [20.53, -14.53], [20.18, -14.68], [20.03, -15.03], [19.5, -15.25], [19.25, -15.15], [19.0, -15.25], [18.75, -15.15], [18.5, -15.25], [17.97, -15.03], [17.75, -14.5], [17.85, -14.25], [17.75, -14.0], [17.85, -13.75]]]]}, "2024-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.75, -13.5], [17.85, -13.25], [17.75, -13.0], [17.97, -12.47], [18.32, -12.32], [18.47, -11.97], [18.82, -11.82], [18.97, -11.47], [19.32, -11.32], [19.47, -10.97], [19.82, -10.82], [19.85, -10.75], [19.75, -10.5], [19.97, -9.97], [20.5, -9.75], [20.75, -9.85], [21.0, -9.75], [21.25, -9.85], [21.5, -9.75], [21.75, -9.85], [22.0, -9.75], [22.53, -9.97], [22.75, -10.5], [22.53, -11.03], [22.18, -11.18], [22.15, -11.25], [22.25, -11.5], [22.03, -12.03], [21.68, -12.18], [21.65, -12.25], [21.75, -12.5], [21.53, -13.03], [21.18, -13.18], [21.15, -13.25], [21.25, -13.5], [21.03, -14.03], [20.68, -14.18], [20.53, -14.53], [20.18, -14.68], [20.03, -15.03], [19.5, -15.25], [19.25, -15.15], [19.0, -15.25], [18.75, -15.15], [18.5, -15.25], [17.97, -15.03], [17.75, -14.5], [17.85, -14.25], [17.75, -14.0], [17.85, -13.75], [17.75, -13.5]]], [[[23.0, -11.25], [23.53, -11.47], [23.68, -11.82], [24.03, -11.97], [24.25, -12.5], [24.03, -13.03], [23.5, -13.25], [23.25, -13.15], [23.0, -13.25], [22.47, -13.03], [22.25, -12.5], [22.35, -12.25], [22.25, -12.0], [22.47, -11.47], [23.0, -11.25]]]]}, "2024-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.75, -13.0], [17.97, -12.47], [18.32, -12.32], [18.47, -11.97], [18.82, -11.82], [18.97, -11.47], [19.5, -11.25], [19.75, -11.35], [20.0, -11.25], [20.25, -11.35], [20.32, -11.32], [20.47, -10.97], [21.0, -10.75], [21.25, -10.85], [21.5, -10.75], [22.03, -10.97], [22.25, -11.5], [22.03, -12.03], [21.68, -12.18], [21.65, -12.25], [21.75, -12.5], [21.53, -13.03], [21.18, -13.18], [21.03, -13.53], [20.68, -13.68], [20.53, -14.03], [20.0, -14.25], [19.75, -14.15], [19.5, -14.25], [19.25, -14.15], [19.0, -14.25], [18.47, -14.03], [18.32, -13.68], [17.97, -13.53], [17.75, -13.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.45229212573264}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8790104404185188}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.96759360267731, 19.608714797692755, 19.81352966036087, 19.307875812287648, 18.955033195285182, 18.964037331862073, 18.82064786023028]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.82215174477551, 17.401971633694814, 17.674725478014864, 17.369096133404582, 17.056698303440385, 17.065320064545915, 17.427675762598312]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5333563966855763, -1.8667954326129812, -1.6489903320364674, -1.81904526544682, -2.076921135489627, -1.898187885565291, -1.714996417140427]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6209877839366982, -2.160093154872527, -1.899368555061585, -2.2370295011137955, -2.45229212573264, -2.4153072980753905, -2.0670841380589877]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.414381148437614, -1.5704531494714205, -1.3888060025603841, -1.5171371895108399, -1.728793330546411, -1.5681169782732314, -1.3941153875664292]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5457807803957795, -1.8392287190383716, -1.6305657749526334, -1.915403247059097, -2.215735355347322, -1.8210291018510683, -1.668898009870987]}}