{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:41.661440", "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": "2010-May-24_to_2010-May-27_46.0_9.5"}, "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": 2010050000729}, "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 24 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 27 2010"}, "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": "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": 82337.04598609929}, "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": ["Ethiopia", "Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": []}, "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": 9.5}, "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": 46.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, 10.03], [44.5, 10.25], [44.75, 10.15], [44.88, 10.2], 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[47.25, 8.35], [47.18, 8.32], [47.03, 7.97], [46.5, 7.75], [46.25, 7.85], [46.0, 7.75], [45.75, 7.85], [45.5, 7.75], [44.97, 7.97], [44.82, 8.32], [44.75, 8.35], [44.5, 8.25], [43.97, 8.47], [43.75, 9.0], [43.85, 9.25], [43.75, 9.5], [43.97, 10.03]]]]}, "2010-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, 10.03], [44.5, 10.25], [44.75, 10.15], [44.88, 10.2], [44.75, 10.5], [44.97, 11.03], [45.5, 11.25], [45.75, 11.15], [46.0, 11.25], [46.25, 11.15], [46.5, 11.25], [47.03, 11.03], [47.18, 10.68], [47.25, 10.65], [47.5, 10.75], [48.03, 10.53], [48.18, 10.18], [48.25, 10.15], [48.5, 10.25], [49.03, 10.03], [49.18, 9.68], [49.53, 9.53], [49.75, 9.0], [49.53, 8.47], [49.0, 8.25], [48.75, 8.35], [48.5, 8.25], [48.25, 8.35], [48.0, 8.25], [47.75, 8.35], [47.5, 8.25], [47.25, 8.35], [47.18, 8.32], [47.03, 7.97], [46.5, 7.75], [46.25, 7.85], [46.0, 7.75], [45.75, 7.85], [45.5, 7.75], [44.97, 7.97], [44.82, 8.32], [44.75, 8.35], [44.5, 8.25], [43.97, 8.47], [43.75, 9.0], [43.85, 9.25], [43.75, 9.5], [43.97, 10.03]]]]}, "2010-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.97, 8.97], [44.75, 9.5], [44.97, 10.03], [45.5, 10.25], [45.75, 10.15], [45.82, 10.18], [45.97, 10.53], [46.5, 10.75], [46.75, 10.65], [47.0, 10.75], [47.25, 10.65], [47.5, 10.75], [48.03, 10.53], [48.18, 10.18], [48.25, 10.15], [48.5, 10.25], [49.03, 10.03], [49.18, 9.68], [49.53, 9.53], [49.75, 9.0], [49.53, 8.47], [49.0, 8.25], [48.75, 8.35], [48.5, 8.25], [48.25, 8.35], [48.0, 8.25], [47.75, 8.35], [47.5, 8.25], [47.25, 8.35], [47.0, 8.25], [46.47, 8.47], [46.32, 8.82], [46.25, 8.85], [46.0, 8.75], [45.75, 8.85], [45.5, 8.75], [44.97, 8.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.127321663415216}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7802797582907623}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.44056141973408, 24.115374385142843, 24.35882853215861, 24.26377370794961]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.983785192929872, 20.898237217355017, 21.104768960146657, 21.79167030494017]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6705719430512502, -2.9855029935604622, -2.7403930193653654, -2.5996957344598286]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.290264861069204, -4.127321663415216, -3.5840485037599024, -3.005172794542318]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7473316746947518, -1.885999427540887, -1.7685978930011335, -1.6184711692581026]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.096812996735525, -2.5523884806112678, -2.0303288325406044, -1.737675794549774]}}