{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:03.808738", "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-Dec-03_to_2021-Dec-05_295.5_-37.0"}, "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": 2021120000187}, "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": "December 03 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 05 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": 89432.7023459179}, "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": -37.0}, "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": 295.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.5}, "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": "MultiPolygon", "coordinates": [[[[-68.53, -33.47], [-68.0, -33.25], [-67.75, -33.35], [-67.5, -33.25], [-66.97, -33.47], [-66.82, -33.82], [-66.47, -33.97], [-66.32, -34.32], [-65.97, -34.47], [-65.82, -34.82], [-65.47, -34.97], [-65.32, -35.32], [-65.25, -35.35], [-65.0, -35.25], [-64.47, -35.47], [-64.32, -35.82], [-63.97, -35.97], [-63.82, -36.32], [-63.47, -36.47], [-63.32, -36.82], [-62.97, -36.97], [-62.75, -37.5], [-62.85, -37.75], [-62.75, -38.0], [-62.85, -38.25], [-62.75, -38.5], [-62.97, -39.03], [-63.5, -39.25], [-63.75, -39.15], [-64.0, -39.25], [-64.53, -39.03], [-64.68, -38.68], [-65.03, -38.53], [-65.18, -38.18], [-65.25, -38.15], [-65.5, -38.25], [-65.75, -38.15], [-66.0, -38.25], [-66.53, -38.03], [-66.68, -37.68], [-67.03, -37.53], [-67.25, -37.0], [-67.15, -36.75], [-67.18, -36.68], [-67.53, -36.53], [-67.75, -36.0], [-67.65, -35.75], [-67.75, -35.5], [-67.65, -35.25], [-67.68, -35.18], [-68.03, -35.03], [-68.18, -34.68], [-68.53, -34.53], [-68.75, -34.0], [-68.53, -33.47]]]]}}, "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": {"2021-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.52999999999997, -34.53], [-68.75, -34.0], [-68.52999999999997, -33.47], [-68.0, -33.25], [-67.75, -33.35], [-67.5, -33.25], [-66.97000000000003, -33.47], [-66.82, -33.82], [-66.47000000000003, -33.97], [-66.32, -34.32], [-65.97000000000003, -34.47], [-65.82, -34.82], [-65.47000000000003, -34.97], [-65.32, -35.32], [-65.25, -35.35], [-65.0, -35.25], [-64.47000000000003, -35.47], [-64.32, -35.82], [-63.97000000000003, -35.97], [-63.81999999999999, -36.32], [-63.47000000000003, -36.47], [-63.31999999999999, -36.82], [-62.97000000000003, -36.97], [-62.75, -37.5], [-62.85000000000002, -37.75], [-62.75, -38.0], [-62.85000000000002, -38.25], [-62.75, -38.5], [-62.97000000000003, -39.03], [-63.5, -39.25], [-63.75, -39.15], [-64.0, -39.25], [-64.52999999999997, -39.03], [-64.68, -38.68], [-65.02999999999997, -38.53], [-65.18, -38.18], [-65.25, -38.15], [-65.5, -38.25], [-65.75, -38.15], [-66.0, -38.25], [-66.52999999999997, -38.03], [-66.68, -37.68], [-67.02999999999997, -37.53], [-67.25, -37.0], [-67.14999999999998, -36.75], [-67.18, -36.68], [-67.52999999999997, -36.53], [-67.75, -36.0], [-67.64999999999998, -35.75], [-67.75, -35.5], [-67.64999999999998, -35.25], [-67.68, -35.18], [-68.02999999999997, -35.03], [-68.18, -34.68], [-68.52999999999997, -34.53]]]]}, "2021-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.52999999999997, -34.53], [-68.75, -34.0], [-68.52999999999997, -33.47], [-68.0, -33.25], [-67.75, -33.35], [-67.5, -33.25], [-66.97000000000003, -33.47], [-66.82, -33.82], [-66.47000000000003, -33.97], [-66.32, -34.32], [-65.97000000000003, -34.47], [-65.82, -34.82], [-65.47000000000003, -34.97], [-65.32, -35.32], [-65.25, -35.35], [-65.0, -35.25], [-64.47000000000003, -35.47], [-64.32, -35.82], [-63.97000000000003, -35.97], [-63.81999999999999, -36.32], [-63.47000000000003, -36.47], [-63.31999999999999, -36.82], [-62.97000000000003, -36.97], [-62.75, -37.5], [-62.85000000000002, -37.75], [-62.75, -38.0], [-62.85000000000002, -38.25], [-62.75, -38.5], [-62.97000000000003, -39.03], [-63.5, -39.25], [-63.75, -39.15], [-64.0, -39.25], [-64.52999999999997, -39.03], [-64.68, -38.68], [-65.02999999999997, -38.53], [-65.18, -38.18], [-65.25, -38.15], [-65.5, -38.25], [-65.75, -38.15], [-66.0, -38.25], [-66.52999999999997, -38.03], [-66.68, -37.68], [-67.02999999999997, -37.53], [-67.25, -37.0], [-67.14999999999998, -36.75], [-67.18, -36.68], [-67.52999999999997, -36.53], [-67.75, -36.0], [-67.64999999999998, -35.75], [-67.75, -35.5], [-67.64999999999998, -35.25], [-67.68, -35.18], [-68.02999999999997, -35.03], [-68.18, -34.68], [-68.52999999999997, -34.53]]]]}, "2021-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.52999999999997, -34.53], [-68.75, -34.0], [-68.52999999999997, -33.47], [-68.0, -33.25], [-67.75, -33.35], [-67.5, -33.25], [-66.97000000000003, -33.47], [-66.82, -33.82], [-66.47000000000003, -33.97], [-66.32, -34.32], [-65.97000000000003, -34.47], [-65.82, -34.82], [-65.47000000000003, -34.97], [-65.32, -35.32], [-65.25, -35.35], [-65.0, -35.25], [-64.47000000000003, -35.47], [-64.32, -35.82], [-63.97000000000003, -35.97], [-63.81999999999999, -36.32], [-63.47000000000003, -36.47], [-63.31999999999999, -36.82], [-62.97000000000003, -36.97], [-62.75, -37.5], [-62.85000000000002, -37.75], [-62.75, -38.0], [-62.85000000000002, -38.25], [-62.75, -38.5], [-62.97000000000003, -39.03], [-63.5, -39.25], [-63.75, -39.15], [-64.0, -39.25], [-64.52999999999997, -39.03], [-64.68, -38.68], [-65.02999999999997, -38.53], [-65.18, -38.18], [-65.25, -38.15], [-65.5, -38.25], [-65.75, -38.15], [-66.0, -38.25], [-66.52999999999997, -38.03], [-66.68, -37.68], [-67.02999999999997, -37.53], [-67.25, -37.0], [-67.14999999999998, -36.75], [-67.18, -36.68], [-67.52999999999997, -36.53], [-67.75, -36.0], [-67.64999999999998, -35.75], [-67.75, -35.5], [-67.64999999999998, -35.25], [-67.68, -35.18], [-68.02999999999997, -35.03], [-68.18, -34.68], [-68.52999999999997, -34.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.23484750273235}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.847323584268524}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.446101638062032, 14.437983935469788, 17.199182560327245]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.501120856284672, 12.329068330915902, 15.160698782208215]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.336908169762012, -7.4422801000175145, -4.762782483026048]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.432214325004566, -8.23484750273235, -5.391472777516128]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.637490128585918, -2.2851105260552655, -1.4263152789483948]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.876785033861591, -2.565808991149193, -1.7350907765078702]}}