{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:20.361580", "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-Dec-20_to_2010-Dec-24_299.5_4.0"}, "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": 2010120000949}, "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": "December 20 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 24 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 70995.71920381297}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": 4.0}, "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": 299.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.0, 2.75], [-62.47, 2.53], [-62.25, 2.0], [-62.47, 1.47], [-63.0, 1.25], [-63.53, 1.47], [-63.75, 2.0], [-63.53, 2.53], [-63.0, 2.75]]]]}, "2010-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.65, 2.25], [-63.75, 2.5], [-63.65, 2.75], [-63.75, 3.0], [-63.65, 3.25], [-63.75, 3.5], [-63.53, 4.03], [-63.18, 4.18], [-63.03, 4.53], [-62.5, 4.75], [-62.25, 4.65], [-62.0, 4.75], [-61.5, 4.54], [-61.18, 4.68], [-61.03, 5.03], [-60.5, 5.25], [-59.97, 5.03], [-59.75, 4.5], [-59.85, 4.25], [-59.75, 4.0], [-59.97, 3.47], [-60.32, 3.32], [-60.47, 2.97], [-60.82, 2.82], [-60.85, 2.75], [-60.75, 2.5], [-60.97, 1.97], [-61.32, 1.82], [-61.46, 1.5], [-61.25, 1.0], [-61.47, 0.47], [-62.0, 0.25], [-62.25, 0.35], [-62.5, 0.25], [-63.03, 0.47], [-63.18, 0.82], [-63.53, 0.97], [-63.75, 1.5], [-63.65, 1.75], [-63.75, 2.0], [-63.65, 2.25]]]]}, "2010-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.65, 2.25], [-63.75, 2.5], [-63.65, 2.75], [-63.75, 3.0], [-63.65, 3.25], [-63.75, 3.5], [-63.53, 4.03], [-63.18, 4.18], [-63.03, 4.53], [-62.5, 4.75], [-62.25, 4.65], [-62.0, 4.75], [-61.5, 4.54], [-61.18, 4.68], [-61.03, 5.03], [-60.5, 5.25], [-59.97, 5.03], [-59.75, 4.5], [-59.85, 4.25], [-59.75, 4.0], [-59.97, 3.47], [-60.32, 3.32], [-60.47, 2.97], [-60.82, 2.82], [-60.85, 2.75], [-60.75, 2.5], [-60.97, 1.97], [-61.32, 1.82], [-61.46, 1.5], [-61.25, 1.0], [-61.47, 0.47], [-62.0, 0.25], [-62.25, 0.35], [-62.5, 0.25], [-63.03, 0.47], [-63.18, 0.82], [-63.53, 0.97], [-63.75, 1.5], [-63.65, 1.75], [-63.75, 2.0], [-63.65, 2.25]]]]}, "2010-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.65, 2.25], [-63.75, 2.5], [-63.65, 2.75], [-63.75, 3.0], [-63.65, 3.25], [-63.75, 3.5], [-63.53, 4.03], [-63.18, 4.18], [-63.03, 4.53], [-62.5, 4.75], [-62.25, 4.65], [-62.0, 4.75], [-61.5, 4.54], [-61.18, 4.68], [-61.03, 5.03], [-60.5, 5.25], [-59.97, 5.03], [-59.75, 4.5], [-59.85, 4.25], [-59.75, 4.0], [-59.97, 3.47], [-60.32, 3.32], [-60.47, 2.97], [-60.82, 2.82], [-60.85, 2.75], [-60.75, 2.5], [-60.97, 1.97], [-61.32, 1.82], [-61.46, 1.5], [-61.25, 1.0], [-61.47, 0.47], [-62.0, 0.25], [-62.25, 0.35], [-62.5, 0.25], [-63.03, 0.47], [-63.18, 0.82], [-63.53, 0.97], [-63.75, 1.5], [-63.65, 1.75], [-63.75, 2.0], [-63.65, 2.25]]]]}, "2010-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.5, 4.75], [-59.97, 4.53], [-59.75, 4.0], [-59.97, 3.47], [-60.5, 3.25], [-61.03, 3.47], [-61.25, 4.0], [-61.03, 4.53], [-60.5, 4.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2786254700473023}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8067199382392518}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.160705072794258, 23.888737004363293, 23.90295440666455, 24.0964974494982, 26.607798397675424]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.160705072794258, 22.334421761693363, 22.351957628965692, 21.935732733363125, 26.607798397675424]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3802233503164416, -1.9134405807961392, -1.8644047924840847, -1.6466771902112338, -2.1328733043669104]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3802233503164416, -2.381837081202832, -3.2786254700473023, -2.3820064034862867, -2.1328733043669104]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3688020857377425, -1.8711688565404099, -1.7976072301160513, -1.65757034894179, -1.6500589908200403]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3688020857377425, -2.300901984462658, -2.512107133568, -2.0565976090339007, -1.6500589908200403]}}