{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:40.002279", "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-Sep-29_to_2010-Oct-02_34.0_-8.0"}, "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": 2010090001250}, "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": "September 29 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 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": 122144.00005124166}, "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", "Tanzania", "Zambia"]}, "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": []}, "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": -8.0}, "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": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.97, -8.47], [31.38, -8.3], [31.25, -8.0], [31.47, -7.47], [32.0, -7.25], [32.5, -7.46], [32.82, -7.32], [32.97, -6.97], [33.5, -6.75], [34.03, -6.97], [34.18, -7.32], [34.5, -7.46], [34.82, -7.32], [34.97, -6.97], [35.5, -6.75], [36.03, -6.97], [36.25, -7.5], [36.15, -7.75], [36.25, -8.0], [36.03, -8.53], [35.68, -8.68], [35.53, -9.03], [35.18, -9.18], [35.15, -9.25], [35.25, -9.5], [35.15, -9.75], [35.25, -10.0], [35.03, -10.53], [34.5, -10.75], [34.2, -10.62], [34.03, -11.03], [33.68, -11.18], [33.65, -11.25], [33.75, -11.5], [33.53, -12.03], [33.0, -12.25], [32.47, -12.03], [32.25, -11.5], [32.35, -11.25], [32.25, -11.0], [32.38, -10.7], [32.25, -10.65], [32.0, -10.75], [31.47, -10.53], [31.32, -10.18], [30.97, -10.03], [30.75, -9.5], [30.85, -9.25], [30.75, -9.0], [30.97, -8.47]]]]}, "2010-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.97, -8.47], [31.32, -8.32], [31.35, -8.25], [31.32, -8.18], [30.97, -8.03], [30.75, -7.5], [30.97, -6.97], [31.5, -6.75], [31.75, -6.85], [32.0, -6.75], [32.25, -6.85], [32.5, -6.75], [33.0, -6.96], [33.5, -6.75], [33.75, -6.85], [34.0, -6.75], [34.53, -6.97], [34.7, -7.38], [34.82, -7.32], [34.97, -6.97], [35.5, -6.75], [36.03, -6.97], [36.25, -7.5], [36.15, -7.75], [36.25, -8.0], [36.03, -8.53], [35.68, -8.68], [35.53, -9.03], [35.18, -9.18], [35.15, -9.25], [35.18, -9.32], [35.53, -9.47], [35.75, -10.0], [35.53, -10.53], [35.0, -10.75], [34.75, -10.65], [34.5, -10.75], [34.2, -10.62], [34.03, -11.03], [33.68, -11.18], [33.65, -11.25], [33.75, -11.5], [33.53, -12.03], [33.0, -12.25], [32.47, -12.03], [32.25, -11.5], [32.35, -11.25], [32.25, -11.0], [32.38, -10.7], [32.25, -10.65], [32.0, -10.75], [31.47, -10.53], [31.32, -10.18], [30.97, -10.03], [30.75, -9.5], [30.85, -9.25], [30.75, -9.0], [30.97, -8.47]]]]}, "2010-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.97, -8.47], [31.32, -8.32], [31.35, -8.25], [31.32, -8.18], [30.97, -8.03], [30.75, -7.5], [30.97, -6.97], [31.5, -6.75], [31.75, -6.85], [32.0, -6.75], [32.25, -6.85], 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"description": "The daily evolution of mean t2m.", "value": [20.93642720409963, 20.636406782977247, 21.053696825247698, 22.4762409350883]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.803282235519475, 14.273832117646236, 14.604676076433236, 19.57532628952788]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5738353257848132, -2.1862287882292732, -1.7924193142418132, -1.3343012325076091]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7282234647086625, -3.027025915410377, -2.4104691308747874, -1.5104277029626587]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5956933986727488, -2.278998249448671, -1.8440048582220783, -1.483359719888733]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9961395333125758, -2.965671512772077, -2.514982561236715, -2.139422425300104]}}