{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:57.701415", "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-Mar-18_to_2011-Mar-23_32.0_-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": 2011030000949}, "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": "March 18 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 23 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 106565.81424878529}, "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": ["Congo DRC", "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": 32.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 28.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.25}, "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": {"2011-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.0, -9.25], [32.53, -9.47], [32.75, -10.0], [32.53, -10.53], [32.0, -10.75], [31.47, -10.53], [31.25, -10.0], [31.47, -9.47], [32.0, -9.25]]]]}, "2011-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.47, -10.53], [31.25, -10.0], [31.47, -9.47], [32.0, -9.25], [32.53, -9.47], [32.75, -10.0], [32.53, -10.53], [32.0, -10.75], [31.47, -10.53]]], [[[31.47, -8.53], [31.25, -8.0], [31.47, -7.47], [32.0, -7.25], [32.53, -7.47], [32.75, -8.0], [32.53, -8.53], [32.0, -8.75], [31.47, -8.53]]]]}, "2011-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, -8.47], [28.5, -8.25], [29.03, -8.47], [29.25, -9.0], [29.15, -9.25], [29.18, -9.32], [29.53, -9.47], [29.68, -9.82], [29.75, -9.85], [29.82, -9.82], [29.97, -9.47], [30.32, -9.32], [30.47, -8.97], [30.82, -8.82], [30.97, -8.47], [31.32, -8.32], [31.35, -8.25], [31.25, -8.0], [31.47, -7.47], [32.0, -7.25], [32.25, -7.35], [32.5, -7.25], [33.03, -7.47], [33.18, -7.82], [33.53, -7.97], [33.75, -8.5], [33.65, -8.75], [33.75, -9.0], [33.53, -9.53], [33.18, 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[20.536896012533646, 21.364018852275763, 20.019111874270834, 20.1694170478508, 20.148253467299583, 20.57648886622775]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.536896012533646, 20.64961665064652, 17.49098676704483, 18.004251502457237, 17.722846556893217, 18.97575483964164]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1884846971400407, -1.4728244616391635, -1.6587358560842957, -1.5419729025644464, -1.5551462696889855, -1.5621718914516483]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1884846971400407, -1.873673337260641, -2.885798998777375, -2.321069179320375, -2.808664343582734, -2.0362774885727504]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4009697092823408, -1.456262012518089, -1.7792492611649011, -1.699404592215002, -1.7467535899242752, -1.6681626066133772]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4009697092823408, -1.6196380388574367, -2.3762953383741223, -2.311499084423788, -2.4577213853123996, -2.1124514253626585]}}