{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:18.763472", "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-May-03_to_2012-May-11_300.0_4.5"}, "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": 2012050000306}, "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": "May 03 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 11 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 52432.67727546576}, "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", "Guyana", "Venezuela"]}, "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": 4.5}, "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": 300.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 300.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-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], [-60.5, 3.25], [-61.03, 3.47], [-61.25, 4.0], [-61.15, 4.25], [-61.25, 4.5], [-61.03, 5.03]]]]}, "2012-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, 5.03], [-60.5, 5.25], [-60.25, 5.15], [-60.0, 5.25], [-59.75, 5.15], [-59.5, 5.25], [-58.97, 5.03], [-58.75, 4.5], [-58.85, 4.25], [-58.75, 4.0], [-58.97, 3.47], [-59.32, 3.32], [-59.47, 2.97], [-60.0, 2.75], [-60.53, 2.97], [-60.68, 3.32], [-61.03, 3.47], [-61.25, 4.0], [-61.15, 4.25], [-61.25, 4.5], [-61.03, 5.03]]]]}, "2012-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, 5.03], [-60.5, 5.25], [-60.25, 5.15], [-60.0, 5.25], [-59.75, 5.15], [-59.5, 5.25], [-58.97, 5.03], [-58.75, 4.5], [-58.85, 4.25], [-58.75, 4.0], [-58.97, 3.47], [-59.32, 3.32], [-59.47, 2.97], [-60.0, 2.75], [-60.53, 2.97], [-60.68, 3.32], [-61.03, 3.47], [-61.25, 4.0], [-61.15, 4.25], [-61.25, 4.5], [-61.03, 5.03]]]]}, "2012-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.53, 5.03], [-61.0, 5.25], [-60.75, 5.15], [-60.5, 5.25], [-60.25, 5.15], [-60.0, 5.25], [-59.75, 5.15], [-59.5, 5.25], [-58.97, 5.03], [-58.75, 4.5], [-58.85, 4.25], [-58.75, 4.0], [-58.97, 3.47], [-59.32, 3.32], [-59.35, 3.25], [-59.25, 3.0], [-59.35, 2.75], [-59.25, 2.5], [-59.35, 2.25], [-59.25, 2.0], [-59.47, 1.47], [-60.0, 1.25], [-60.25, 1.35], [-60.5, 1.25], [-61.03, 1.47], [-61.25, 2.0], [-61.15, 2.25], [-61.25, 2.5], [-61.15, 2.75], [-61.25, 3.0], [-61.12, 3.3], [-61.53, 3.47], [-61.75, 4.0], [-61.65, 4.25], [-61.75, 4.5], [-61.53, 5.03]]]]}, "2012-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, 5.0], [-62.03, 5.53], [-61.5, 5.75], [-61.25, 5.65], [-61.0, 5.75], [-60.47, 5.53], [-60.32, 5.18], [-60.25, 5.15], [-60.0, 5.25], [-59.75, 5.15], [-59.5, 5.25], [-58.97, 5.03], [-58.75, 4.5], [-58.85, 4.25], [-58.75, 4.0], [-58.97, 3.47], [-59.32, 3.32], [-59.35, 3.25], [-59.25, 3.0], [-59.35, 2.75], [-59.25, 2.5], [-59.35, 2.25], [-59.25, 2.0], [-59.47, 1.47], [-60.0, 1.25], [-60.25, 1.35], [-60.5, 1.25], [-61.03, 1.47], [-61.25, 2.0], [-61.15, 2.25], [-61.25, 2.5], [-61.15, 2.75], [-61.25, 3.0], [-61.12, 3.3], [-61.53, 3.47], [-61.75, 4.0], [-61.65, 4.25], [-61.68, 4.32], [-62.03, 4.47], [-62.25, 5.0]]]]}, "2012-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, 5.0], [-62.03, 5.53], [-61.5, 5.75], [-61.25, 5.65], [-61.0, 5.75], [-60.47, 5.53], [-60.32, 5.18], [-60.25, 5.15], [-60.0, 5.25], [-59.75, 5.15], [-59.5, 5.25], [-58.97, 5.03], [-58.75, 4.5], [-58.85, 4.25], [-58.75, 4.0], [-58.97, 3.47], [-59.32, 3.32], [-59.35, 3.25], [-59.25, 3.0], [-59.35, 2.75], [-59.25, 2.5], [-59.35, 2.25], [-59.25, 2.0], [-59.47, 1.47], [-60.0, 1.25], [-60.25, 1.35], [-60.5, 1.25], [-61.03, 1.47], [-61.25, 2.0], [-61.15, 2.25], [-61.25, 2.5], [-61.15, 2.75], [-61.25, 3.0], [-61.12, 3.3], [-61.53, 3.47], [-61.75, 4.0], [-61.65, 4.25], [-61.68, 4.32], [-62.03, 4.47], [-62.25, 5.0]]]]}, "2012-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, 4.47], [-62.25, 5.0], [-62.03, 5.53], [-61.5, 5.75], [-61.25, 5.65], [-61.0, 5.75], [-60.47, 5.53], [-60.25, 5.0], [-60.47, 4.47], [-61.0, 4.25], [-61.25, 4.35], [-61.5, 4.25], [-62.03, 4.47]]]]}, "2012-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, 4.47], [-62.25, 5.0], [-62.03, 5.53], [-61.5, 5.75], [-61.25, 5.65], [-61.0, 5.75], [-60.47, 5.53], [-60.25, 5.0], [-60.47, 4.47], [-61.0, 4.25], [-61.25, 4.35], [-61.5, 4.25], [-62.03, 4.47]]]]}, "2012-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, 4.47], [-62.25, 5.0], [-62.03, 5.53], [-61.5, 5.75], [-61.25, 5.65], [-61.0, 5.75], [-60.47, 5.53], [-60.25, 5.0], [-60.47, 4.47], [-61.0, 4.25], [-61.25, 4.35], [-61.5, 4.25], [-62.03, 4.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7695244334067866}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9383978341839003}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.518381933556043, 22.793258254787418, 24.214931088114724, 24.05844533714992, 23.030591155298225, 23.59306616073121, 20.92251351122661, 20.981508917784822, 21.0510664699691]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.468593010867437, 21.46620296935049, 23.094861728750402, 21.92386917298319, 19.858588180703862, 20.564284085427744, 20.591753696105627, 20.57408318631292, 20.677375348101577]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.215714954223131, -3.360882539192817, -1.8108658878861255, -1.6842079555501415, -2.226824237551127, -1.6078908538531442, -1.147220407174217, -1.1035537188361388, -1.0188765949563106]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3816255718342063, -3.7695244334067866, -2.1277264305634276, -2.3012548831831623, -3.3407331870190546, -2.372528029814248, -1.1987903754231866, -1.1273720889032006, -1.026934051839362]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3341560518820743, -2.5617954013801056, -1.4170060715176125, -1.4715993791103337, -2.0170224317472036, -1.478633539685909, -1.4898760797067445, -1.4385556962677581, -1.3194460757053417]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3886971057308317, -3.0748070457154086, -1.5980083137212306, -1.9958517494786936, -2.5349148017628202, -1.7501822156829234, -1.5212759073991844, -1.5128038973102622, -1.349229711669338]}}