{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:51.919158", "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-Jul-01_to_2011-Jul-03_29.0_18.5"}, "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": 2011070000155}, "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": "July 01 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 03 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 58148.872447980815}, "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": ["Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 18.5}, "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": 29.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "29.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.38, 20.7], [27.25, 21.0], [27.47, 21.53], [28.0, 21.75], [28.25, 21.65], [28.5, 21.75], [28.75, 21.65], [28.82, 21.68], [28.97, 22.03], [29.5, 22.25], [30.03, 22.03], [30.25, 21.5], [30.15, 21.25], [30.25, 21.0], [30.03, 20.47], [29.68, 20.32], [29.65, 20.25], [29.75, 20.0], [29.53, 19.47], [29.18, 19.32], [29.15, 19.25], [29.18, 19.18], [29.25, 19.15], [29.5, 19.25], [30.03, 19.03], [30.25, 18.5], [30.03, 17.97], [29.68, 17.82], [29.53, 17.47], [29.0, 17.25], [28.47, 17.47], [28.32, 17.82], [27.97, 17.97], [27.82, 18.32], [27.47, 18.47], [27.3, 18.88], [27.0, 18.75], [26.47, 18.97], [26.25, 19.5], [26.47, 20.03], [26.82, 20.18], [26.97, 20.53], [27.38, 20.7]]]]}, "2011-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.38, 20.7], [27.25, 21.0], [27.47, 21.53], [28.0, 21.75], [28.25, 21.65], [28.5, 21.75], [28.75, 21.65], [28.82, 21.68], [28.97, 22.03], [29.5, 22.25], [30.03, 22.03], [30.25, 21.5], [30.15, 21.25], [30.25, 21.0], [30.03, 20.47], [29.68, 20.32], [29.65, 20.25], [29.75, 20.0], [29.53, 19.47], [29.18, 19.32], [29.15, 19.25], [29.18, 19.18], [29.25, 19.15], [29.5, 19.25], [30.03, 19.03], [30.25, 18.5], [30.03, 17.97], [29.68, 17.82], [29.53, 17.47], [29.0, 17.25], [28.47, 17.47], [28.32, 17.82], [27.97, 17.97], [27.82, 18.32], [27.47, 18.47], [27.3, 18.88], [27.0, 18.75], [26.47, 18.97], [26.25, 19.5], [26.47, 20.03], [26.82, 20.18], [26.97, 20.53], [27.38, 20.7]]]]}, "2011-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.38, 20.7], [27.25, 21.0], [27.47, 21.53], [28.0, 21.75], [28.25, 21.65], [28.5, 21.75], [28.75, 21.65], [28.82, 21.68], [28.97, 22.03], [29.5, 22.25], [30.03, 22.03], [30.25, 21.5], [30.15, 21.25], [30.25, 21.0], [30.03, 20.47], [29.68, 20.32], [29.65, 20.25], [29.75, 20.0], [29.53, 19.47], [29.18, 19.32], [29.15, 19.25], [29.18, 19.18], [29.25, 19.15], [29.5, 19.25], [30.03, 19.03], [30.25, 18.5], [30.03, 17.97], [29.68, 17.82], [29.53, 17.47], [29.0, 17.25], [28.47, 17.47], [28.32, 17.82], [27.97, 17.97], [27.82, 18.32], [27.47, 18.47], [27.3, 18.88], [27.0, 18.75], [26.47, 18.97], [26.25, 19.5], [26.47, 20.03], [26.82, 20.18], [26.97, 20.53], [27.38, 20.7]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.4602515427590674}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5457359347477944}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.287476328218077, 29.182089980735554, 29.944026125268294]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.731623677389734, 27.640980579085408, 28.51269384163379]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6970111063994637, -2.827932995084629, -2.1122637027592903]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.4602515427590674, -3.002433748553642, -2.3799934412298285]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5859126213458112, -1.7589056874374667, -1.3462252060179218]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8597198891374622, -2.2040314728265873, -1.45698386958771]}}