{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:46.892151", "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": "2012-Mar-05_to_2012-Mar-08_315.0_-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": 2012030000461}, "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 05 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 08 2012"}, "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": 58182.28336937039}, "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.E.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": -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": 315.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 315.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.0, -7.25], [-44.47, -7.47], [-44.25, -8.0], [-44.47, -8.53], [-45.0, -8.75], [-45.53, -8.53], [-45.75, -8.0], [-45.53, -7.47], [-45.0, -7.25]]]]}, "2012-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, -6.97], [-48.0, -6.75], [-47.75, -6.85], [-47.5, -6.75], [-47.25, -6.85], [-47.18, -6.82], [-47.03, -6.47], [-46.5, -6.25], [-46.25, -6.35], [-46.0, -6.25], [-45.75, -6.35], [-45.5, -6.25], [-44.97, -6.47], [-44.82, -6.82], [-44.47, -6.97], [-44.25, -7.5], [-44.35, -7.75], [-44.25, -8.0], [-44.47, -8.53], [-45.0, -8.75], [-45.3, -8.62], [-45.47, -9.03], [-45.82, -9.18], [-45.97, -9.53], [-46.5, -9.75], [-47.03, -9.53], [-47.18, -9.18], [-47.53, -9.03], [-47.68, -8.68], [-47.75, -8.65], [-48.0, -8.75], [-48.53, -8.53], [-48.75, -8.0], [-48.65, -7.75], [-48.75, -7.5], [-48.53, -6.97]]]]}, "2012-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, -6.97], [-48.0, -6.75], [-47.75, -6.85], [-47.5, -6.75], [-47.25, -6.85], [-47.18, -6.82], [-47.03, -6.47], [-46.5, -6.25], [-46.25, -6.35], [-46.0, -6.25], [-45.75, -6.35], [-45.5, -6.25], [-44.97, -6.47], [-44.82, -6.82], [-44.47, -6.97], [-44.25, -7.5], [-44.35, -7.75], [-44.25, -8.0], [-44.47, -8.53], [-45.0, -8.75], [-45.3, -8.62], [-45.47, -9.03], [-45.82, -9.18], [-45.97, -9.53], [-46.5, -9.75], [-47.03, -9.53], [-47.18, -9.18], [-47.53, -9.03], [-47.68, -8.68], [-47.75, -8.65], [-48.0, -8.75], [-48.53, -8.53], [-48.75, -8.0], [-48.65, -7.75], [-48.75, -7.5], [-48.53, -6.97]]]]}, "2012-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, -6.97], [-48.0, -6.75], [-47.75, -6.85], [-47.5, -6.75], [-47.25, -6.85], [-47.18, -6.82], [-47.03, -6.47], [-46.5, -6.25], [-46.25, -6.35], [-46.0, -6.25], [-45.75, -6.35], [-45.5, -6.25], [-44.97, -6.47], [-44.82, -6.82], [-44.47, -6.97], [-44.25, -7.5], [-44.35, -7.75], [-44.25, -8.0], [-44.47, -8.53], [-45.0, -8.75], [-45.3, -8.62], [-45.47, -9.03], [-45.82, -9.18], [-45.97, -9.53], [-46.5, -9.75], [-47.03, -9.53], [-47.18, -9.18], [-47.53, -9.03], [-47.68, -8.68], [-47.75, -8.65], [-48.0, -8.75], [-48.53, -8.53], [-48.75, -8.0], [-48.65, -7.75], [-48.75, -7.5], [-48.53, -6.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.482024572866692}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8818085694045281}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.91131946118469, 24.007202287322173, 23.09763929912657, 24.287906744780116]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.91131946118469, 22.807931055782603, 22.42643261624937, 23.529017867041944]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3329056346289008, -1.6763544046801766, -2.596884430459828, -1.401076501219665]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3329056346289008, -2.4331008654060042, -3.482024572866692, -1.6481792671220887]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2056155110616267, -1.633991446168917, -2.5821734040059936, -1.4780467769350656]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2056155110616267, -2.370985366427091, -3.2234876134466948, -1.9509022059739123]}}