{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:23.114547", "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": "2021-Oct-28_to_2021-Nov-01_316.0_-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": 2021100000950}, "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": "October 28 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 01 2021"}, "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": 108019.9456451006}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 316.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "316.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 316.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-45.53, -5.03], [-45.75, -4.5], [-45.65, -4.25], [-45.68, -4.18], [-45.75, -4.15], [-46.0, -4.25], [-46.53, -4.03], [-46.68, -3.68], [-47.03, -3.53], [-47.25, -3.0], [-47.15, -2.75], [-47.18, -2.68], [-47.25, -2.65], [-47.5, -2.75], [-48.03, -2.53], [-48.18, -2.18], [-48.53, -2.03], [-48.75, -1.5], [-48.53, -0.97], [-48.0, -0.75], [-47.5, -0.96], [-47.0, -0.75], [-46.75, -0.85], [-46.5, -0.75], [-46.25, -0.85], [-46.0, -0.75], [-45.75, -0.85], [-45.5, -0.75], [-44.97, -0.97], [-44.75, -1.5], [-44.85, -1.75], [-44.75, -2.0], [-44.85, -2.25], [-44.82, -2.32], [-44.75, -2.35], [-44.5, -2.25], [-44.25, -2.35], [-44.0, -2.25], [-43.75, -2.35], [-43.5, -2.25], [-42.97, -2.47], [-42.75, -3.0], [-42.85, -3.25], [-42.75, -3.5], [-42.85, -3.75], [-42.75, -4.0], [-42.85, -4.25], [-42.75, -4.5], [-42.85, -4.75], [-42.75, -5.0], [-42.97, -5.53], [-43.5, -5.75], [-44.03, -5.53], [-44.18, -5.18], [-44.25, -5.15], [-44.5, -5.25], [-44.75, -5.15], [-45.0, -5.25], [-45.53, -5.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.52999999999997, -2.03], [-48.75, -1.5], [-48.52999999999997, -0.97], [-48.0, -0.75], [-47.5, -0.96], [-47.0, -0.75], [-46.75, -0.85], [-46.5, -0.75], [-46.25, -0.85], [-46.0, -0.75], [-45.75, -0.85], [-45.5, -0.75], [-44.97000000000003, -0.97], [-44.75, -1.5], [-44.85000000000002, -1.75], [-44.75, -2.0], [-44.85000000000002, -2.25], [-44.81999999999999, -2.32], [-44.75, -2.35], [-44.5, -2.25], [-44.25, -2.35], [-44.0, -2.25], [-43.47000000000003, -2.47], [-43.25, -3.0], [-43.35000000000002, -3.25], [-43.25, -3.5], [-43.47000000000003, -4.03], [-43.81999999999999, -4.18], [-43.97000000000003, -4.53], [-44.5, -4.75], [-45.02999999999997, -4.53], [-45.18000000000001, -4.18], [-45.25, -4.15], [-45.5, -4.25], [-45.75, -4.15], [-46.0, -4.25], [-46.52999999999997, -4.03], 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26.9187187564674, 27.1537443680254, 27.247284918754474, 27.970204059338357]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.399457303683334, 25.96263337181233, 26.151361200259487, 26.41603220278847, 27.609662729149306]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1472565163235096, -1.7591535558654918, -1.515097305797183, -1.594736270828952, -1.4818349738158076]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.627132184910181, -2.587137170918652, -2.0142412280590065, -2.358210324232971, -1.6877193171721387]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7579523781548765, -2.4561891656553483, -1.998300722919269, -1.9605686804206819, -1.478225259273123]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5633013199810915, -3.2113096612483325, -2.7551584039658112, -2.6885267669640722, -1.5768107267316016]}}