{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:24:24.187950", "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-May-05_to_2021-May-07_300.0_-36.5"}, "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": 2021050000365}, "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 05 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 07 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 63031.5388104414}, "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": ["Argentina"]}, "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": -36.5}, "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": 297.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-63.75, -34.5], [-63.53, -33.97], [-63.177, -33.823], [-63.03, -33.47], [-62.5, -33.25], [-62.25, -33.354], [-62.0, -33.25], [-61.47, -33.47], [-61.323, -33.823], [-60.97, -33.97], [-60.823, -34.323], [-60.75, -34.354], [-60.5, -34.25], [-60.25, -34.354], [-60.0, -34.25], [-59.75, -34.354], [-59.5, -34.25], [-59.25, -34.354], [-59.0, -34.25], [-58.75, -34.354], [-58.5, -34.25], [-57.97, -34.47], [-57.75, -35.0], [-57.97, -35.53], [-58.323, -35.677], [-58.354, -35.75], [-58.25, -36.0], [-58.47, -36.53], [-58.823, -36.677], [-58.97, -37.03], [-59.323, -37.177], [-59.47, -37.53], [-60.0, -37.75], [-60.53, -37.53], [-60.677, -37.177], [-61.03, -37.03], [-61.25, -36.5], [-61.146, -36.25], [-61.25, -36.0], [-61.125, -35.698], [-61.25, -35.646], [-61.5, -35.75], [-61.75, -35.646], [-61.823, -35.677], [-61.97, -36.03], [-62.5, -36.25], [-63.03, -36.03], [-63.25, -35.5], [-63.146, -35.25], [-63.177, -35.177], [-63.53, -35.03], [-63.75, -34.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-05-05T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-63.17677669529661, -35.17677669529664], [-63.53033008588989, -35.03033008588991], [-63.75, -34.5], [-63.53033008588989, -33.96966991411009], [-63.17677669529661, -33.82322330470336], [-63.03033008588989, -33.46966991411009], [-62.5, -33.25], [-62.25, -33.35355339059328], [-62.0, -33.25], [-61.46966991411011, -33.46966991411009], [-61.32322330470339, -33.82322330470336], [-60.96966991411011, -33.96966991411009], [-60.82322330470339, -34.32322330470336], [-60.75, -34.35355339059328], [-60.5, -34.25], [-60.25, -34.35355339059328], [-60.0, -34.25], [-59.75, -34.35355339059328], [-59.5, -34.25], [-59.25, -34.35355339059328], [-59.0, -34.25], [-58.75, -34.35355339059328], [-58.5, -34.25], [-57.96966991411011, -34.46966991411009], [-57.75, -35.0], [-57.96966991411011, -35.53033008588991], [-58.32322330470339, 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of mean t2m anomalies.", "value": [-5.09345358642493, -4.694656240661934, -4.333039582732579]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.157252028305834, -5.05904827906096, -4.897239358223544]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5550056396154, -1.4325807588045592, -1.350565420078158]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9331910263123755, -1.5641289617645975, -1.5205935038268072]}}