{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:40.748512", "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": "2018-Dec-12_to_2018-Dec-15_297.5_-3.5"}, "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": 2018120000426}, "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 12 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 15 2018"}, "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": 108083.70611285459}, "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": -3.5}, "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": 297.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 294.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.53, -1.47], [-65.0, -1.25], [-64.75, -1.35], [-64.5, -1.25], [-64.25, -1.35], [-64.0, -1.25], [-63.75, -1.35], [-63.68, -1.32], [-63.65, -1.25], [-63.75, -1.0], [-63.53, -0.47], [-63.0, -0.25], [-62.75, -0.35], [-62.68, -0.32], [-62.53, 0.03], [-62.0, 0.25], [-61.47, 0.03], [-61.32, -0.32], [-61.25, -0.35], [-61.0, -0.25], [-60.47, -0.47], [-60.25, -1.0], [-60.35, -1.25], [-60.25, -1.5], [-60.47, -2.03], [-61.0, -2.25], [-61.25, -2.15], [-61.32, -2.18], [-61.47, -2.53], [-61.82, -2.68], [-61.96, -3.0], [-61.75, -3.5], [-61.97, -4.03], [-62.32, -4.18], [-62.47, -4.53], [-63.0, -4.75], [-63.25, -4.65], [-63.5, -4.75], [-64.03, -4.53], [-64.18, -4.18], [-64.53, -4.03], [-64.75, -3.5], [-64.65, -3.25], [-64.68, -3.18], [-64.75, -3.15], [-65.0, -3.25], [-65.53, -3.03], [-65.75, -2.5], [-65.65, -2.25], [-65.75, -2.0], [-65.53, -1.47]]]]}, "2018-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.53, -1.47], [-65.0, -1.25], [-64.75, -1.35], [-64.5, -1.25], [-64.25, -1.35], [-64.0, -1.25], [-63.75, -1.35], [-63.68, -1.32], [-63.65, -1.25], [-63.75, -1.0], [-63.53, -0.47], [-63.0, -0.25], [-62.75, -0.35], [-62.68, -0.32], [-62.53, 0.03], [-62.0, 0.25], [-61.47, 0.03], [-61.32, -0.32], [-61.25, -0.35], [-61.0, -0.25], [-60.47, -0.47], [-60.25, -1.0], [-60.35, -1.25], [-60.25, -1.5], [-60.47, -2.03], [-61.0, -2.25], [-61.25, -2.15], [-61.32, -2.18], [-61.35, -2.25], [-61.25, -2.5], [-61.46, -3.0], [-61.25, -3.5], [-61.47, -4.03], [-61.82, -4.18], [-61.97, -4.53], [-62.5, -4.75], [-62.75, -4.65], [-63.0, -4.75], [-63.25, -4.65], [-63.5, -4.75], [-64.03, -4.53], [-64.18, -4.18], [-64.53, -4.03], [-64.75, -3.5], [-64.65, -3.25], [-64.68, -3.18], [-64.75, -3.15], [-65.0, -3.25], [-65.53, -3.03], [-65.75, -2.5], [-65.65, -2.25], [-65.75, -2.0], [-65.53, -1.47]]]]}, "2018-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.53, -1.47], [-65.0, -1.25], [-64.75, -1.35], [-64.5, -1.25], [-64.25, -1.35], [-64.0, -1.25], [-63.75, -1.35], [-63.68, -1.32], [-63.65, -1.25], [-63.75, -1.0], [-63.53, -0.47], [-63.0, -0.25], [-62.75, -0.35], [-62.68, -0.32], [-62.53, 0.03], [-62.0, 0.25], [-61.47, 0.03], [-61.32, -0.32], [-61.25, -0.35], [-61.0, -0.25], [-60.47, -0.47], [-60.25, -1.0], [-60.35, -1.25], [-60.25, -1.5], [-60.47, -2.03], [-61.0, -2.25], [-61.25, -2.15], [-61.32, -2.18], [-61.35, -2.25], [-61.25, -2.5], [-61.46, -3.0], [-61.25, -3.5], [-61.47, -4.03], [-61.82, -4.18], [-61.97, -4.53], [-62.5, -4.75], [-62.75, -4.65], [-63.0, -4.75], [-63.25, -4.65], [-63.5, -4.75], [-64.03, -4.53], [-64.18, -4.18], [-64.53, -4.03], [-64.75, -3.5], [-64.65, -3.25], [-64.68, -3.18], [-64.75, -3.15], [-65.0, -3.25], [-65.53, -3.03], [-65.75, -2.5], [-65.65, -2.25], [-65.75, -2.0], [-65.53, -1.47]]]]}, "2018-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.25, -3.0], [-64.03, -2.47], [-63.68, -2.32], [-63.53, -1.97], [-63.18, -1.82], [-63.03, -1.47], [-62.5, -1.25], [-61.97, -1.47], [-61.82, -1.82], [-61.47, -1.97], [-61.25, -2.5], [-61.46, -3.0], [-61.25, -3.5], [-61.47, -4.03], [-61.82, -4.18], [-61.97, -4.53], [-62.5, -4.75], [-62.75, -4.65], [-63.0, -4.75], [-63.25, -4.65], [-63.5, -4.75], [-64.03, -4.53], [-64.25, -4.0], [-64.15, -3.75], [-64.25, -3.5], [-64.15, -3.25], [-64.25, -3.0]]], [[[-65.53, -3.03], [-65.75, -2.5], [-65.53, -1.97], [-65.0, -1.75], [-64.47, -1.97], [-64.25, -2.5], [-64.47, -3.03], [-65.0, -3.25], [-65.53, -3.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.648028188982778}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2943122690791353}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.920677434441416, 24.940903680302142, 24.907424126735123, 25.027399534926417]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.47581187867837, 24.47040438024908, 24.31817303205918, 24.640843254795925]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3747376563785034, -1.2920287642099035, -1.272075275986078, -1.185314297239116]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.641103379547701, -1.648028188982778, -1.5413407482561752, -1.437957887601101]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6252277309817544, -1.5533582934865913, -1.6183753202763482, -1.5412714172772994]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0739048261546102, -1.9576678462513986, -1.9718966919803045, -1.8952925174324964]}}