{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:25.493524", "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-Nov-05_to_2021-Nov-07_297.5_-24.0"}, "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": 2021110000237}, "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": "November 05 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 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": 75668.17655233011}, "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": -24.0}, "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": 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": 295.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-65.25, -25.0], [-65.15, -24.75], [-65.25, -24.5], [-65.03, -23.97], [-64.68, -23.82], [-64.53, -23.47], [-64.18, -23.32], [-64.03, -22.97], [-63.5, -22.75], [-62.97, -22.97], [-62.82, -23.32], [-62.75, -23.35], [-62.5, -23.25], [-61.97, -23.47], [-61.82, -23.82], [-61.47, -23.97], [-61.32, -24.32], [-60.97, -24.47], [-60.75, -25.0], [-60.85, -25.25], [-60.75, -25.5], [-60.97, -26.03], [-61.5, -26.25], [-61.75, -26.15], [-61.82, -26.18], [-61.97, -26.53], [-62.5, -26.75], [-62.75, -26.65], [-63.0, -26.75], [-63.25, -26.65], [-63.5, -26.75], [-64.0, -26.54], [-64.5, -26.75], [-65.03, -26.53], [-65.25, -26.0], [-65.15, -25.75], [-65.25, -25.5], [-65.15, -25.25], [-65.25, -25.0]]]]}}, "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": {"2021-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, -25.5], [-65.14999999999998, -25.25], [-65.25, -25.0], [-65.14999999999998, -24.75], [-65.25, -24.5], [-65.02999999999997, -23.97], [-64.68, -23.82], [-64.52999999999997, -23.47], [-64.18, -23.32], [-64.02999999999997, -22.97], [-63.5, -22.75], [-62.97000000000003, -22.97], [-62.81999999999999, -23.32], [-62.75, -23.35], [-62.5, -23.25], [-61.97000000000003, -23.47], [-61.81999999999999, -23.82], [-61.47000000000003, -23.97], [-61.31999999999999, -24.32], [-60.97000000000003, -24.47], [-60.75, -25.0], [-60.85000000000002, -25.25], [-60.75, -25.5], [-60.97000000000003, -26.03], [-61.5, -26.25], [-61.75, -26.15], [-61.81999999999999, -26.18], [-61.97000000000003, -26.53], [-62.5, -26.75], [-62.75, -26.65], [-63.0, -26.75], [-63.25, -26.65], [-63.5, -26.75], [-64.0, -26.54], [-64.5, -26.75], [-65.02999999999997, -26.53], [-65.25, -26.0], [-65.14999999999998, -25.75], [-65.25, -25.5]]]]}, "2021-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, -25.5], [-65.14999999999998, -25.25], [-65.25, -25.0], [-65.14999999999998, -24.75], [-65.25, -24.5], [-65.02999999999997, -23.97], [-64.68, -23.82], [-64.52999999999997, -23.47], [-64.18, -23.32], [-64.02999999999997, -22.97], [-63.5, -22.75], [-62.97000000000003, -22.97], [-62.81999999999999, -23.32], [-62.75, -23.35], [-62.5, -23.25], [-61.97000000000003, -23.47], [-61.81999999999999, -23.82], [-61.47000000000003, -23.97], [-61.31999999999999, -24.32], [-60.97000000000003, -24.47], [-60.75, -25.0], [-60.85000000000002, -25.25], [-60.75, -25.5], [-60.97000000000003, -26.03], [-61.5, -26.25], [-61.75, -26.15], [-61.81999999999999, -26.18], [-61.97000000000003, -26.53], [-62.5, -26.75], [-62.75, -26.65], [-63.0, -26.75], [-63.25, -26.65], [-63.5, -26.75], [-64.0, -26.54], [-64.5, -26.75], [-65.02999999999997, -26.53], [-65.25, -26.0], [-65.14999999999998, -25.75], [-65.25, -25.5]]]]}, "2021-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, -25.5], [-65.14999999999998, -25.25], [-65.25, -25.0], [-65.14999999999998, -24.75], [-65.25, -24.5], [-65.02999999999997, -23.97], [-64.68, -23.82], [-64.52999999999997, -23.47], [-64.18, -23.32], [-64.02999999999997, -22.97], [-63.5, -22.75], [-62.97000000000003, -22.97], [-62.81999999999999, -23.32], [-62.75, -23.35], [-62.5, -23.25], [-61.97000000000003, -23.47], [-61.81999999999999, -23.82], [-61.47000000000003, -23.97], [-61.31999999999999, -24.32], [-60.97000000000003, -24.47], [-60.75, -25.0], [-60.85000000000002, -25.25], [-60.75, -25.5], [-60.97000000000003, -26.03], [-61.5, -26.25], [-61.75, -26.15], [-61.81999999999999, -26.18], [-61.97000000000003, -26.53], [-62.5, -26.75], [-62.75, -26.65], [-63.0, -26.75], [-63.25, -26.65], [-63.5, -26.75], [-64.0, -26.54], [-64.5, -26.75], [-65.02999999999997, -26.53], [-65.25, -26.0], [-65.14999999999998, -25.75], [-65.25, -25.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -14.372749763754257}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.78645535416242}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.089706379002166, 13.584692059055556, 19.502340154200112]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.513239022991854, 12.447653147622418, 16.248908076171972]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.953241574863476, -12.629329420355713, -6.776795067268078]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.395619254312749, -14.372749763754257, -9.121560970760868]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.627111351940531, -2.972244897085119, -1.6041368757932488]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1216543200970563, -3.395640041836854, -2.191507749968724]}}