{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:59.502501", "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": "2024-Jan-09_to_2024-Jan-11_291.0_-56.5"}, "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": 2024010000274}, "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": "January 09 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 11 2024"}, "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": 62042.02874212474}, "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": ["Chile"]}, "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": ["Atlantic Ocean"]}, "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": -56.5}, "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": 291.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 297.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -57.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -54.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-69.53, -55.97], [-69.0, -55.75], [-68.75, -55.85], [-68.5, -55.75], [-68.25, -55.85], [-68.18, -55.82], [-68.03, -55.47], [-67.68, -55.32], [-67.53, -54.97], [-67.0, -54.75], [-66.75, -54.85], [-66.5, -54.75], [-66.25, -54.85], [-66.0, -54.75], [-65.75, -54.85], [-65.68, -54.82], [-65.53, -54.47], [-65.0, -54.25], [-64.75, -54.35], [-64.5, -54.25], [-64.25, -54.35], [-64.0, -54.25], [-63.75, -54.35], [-63.68, -54.32], [-63.53, -53.97], [-63.0, -53.75], [-62.47, -53.97], [-62.25, -54.5], [-62.47, -55.03], [-62.82, -55.18], [-62.96, -55.5], [-62.75, -56.0], [-62.97, -56.53], [-63.5, -56.75], [-64.0, -56.54], [-64.5, -56.75], [-64.75, -56.65], [-64.82, -56.68], [-64.97, -57.03], [-65.32, -57.18], [-65.47, -57.53], [-66.0, -57.75], [-66.25, -57.65], [-66.32, -57.68], [-66.47, -58.03], [-67.0, -58.25], [-67.25, -58.15], [-67.5, -58.25], [-68.03, -58.03], [-68.18, -57.68], [-68.25, -57.65], [-68.5, -57.75], [-69.03, -57.53], [-69.18, -57.18], [-69.53, -57.03], [-69.75, -56.5], [-69.53, -55.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.South-America", "Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.52999999999997, -57.03], [-69.75, -56.5], [-69.52999999999997, -55.97], [-69.0, -55.75], [-68.75, -55.85], [-68.5, -55.75], [-68.25, -55.85], [-68.18, -55.82], [-68.02999999999997, -55.47], [-67.68, -55.32], [-67.52999999999997, -54.97], [-67.0, -54.75], [-66.75, -54.85], [-66.5, -54.75], [-66.25, -54.85], [-66.0, -54.75], [-65.75, -54.85], [-65.68, -54.82], [-65.52999999999997, -54.47], [-65.0, -54.25], [-64.75, -54.35], [-64.5, -54.25], [-64.25, -54.35], [-64.0, -54.25], [-63.75, -54.35], [-63.68000000000001, -54.32], [-63.52999999999997, -53.97], [-63.0, -53.75], [-62.47000000000003, -53.97], [-62.25, -54.5], [-62.47000000000003, -55.03], [-62.81999999999999, -55.18], [-62.95999999999998, -55.5], [-62.75, -56.0], [-62.97000000000003, -56.53], [-63.5, -56.75], [-64.0, -56.54], [-64.5, -56.75], [-64.75, -56.65], [-64.82, -56.68], [-64.97000000000003, -57.03], [-65.32, -57.18], [-65.47000000000003, -57.53], [-66.0, -57.75], [-66.25, -57.65], [-66.32, -57.68], [-66.47000000000003, -58.03], [-67.0, -58.25], [-67.25, -58.15], [-67.5, -58.25], [-68.02999999999997, -58.03], [-68.18, -57.68], [-68.25, -57.65], [-68.5, -57.75], [-69.02999999999997, -57.53], [-69.18, -57.18], [-69.52999999999997, -57.03]]]]}, "2024-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.52999999999997, -57.03], [-69.75, -56.5], [-69.52999999999997, -55.97], [-69.0, -55.75], [-68.75, -55.85], [-68.5, -55.75], [-68.25, -55.85], [-68.18, -55.82], [-68.02999999999997, -55.47], [-67.68, -55.32], [-67.52999999999997, -54.97], [-67.0, -54.75], [-66.75, -54.85], [-66.5, -54.75], [-66.25, -54.85], [-66.0, -54.75], [-65.75, -54.85], [-65.68, -54.82], [-65.52999999999997, -54.47], [-65.0, -54.25], [-64.75, -54.35], [-64.5, -54.25], [-64.25, -54.35], [-64.0, -54.25], [-63.75, -54.35], [-63.68000000000001, -54.32], [-63.52999999999997, -53.97], [-63.0, -53.75], [-62.47000000000003, -53.97], [-62.25, -54.5], [-62.47000000000003, -55.03], [-62.81999999999999, -55.18], [-62.95999999999998, -55.5], [-62.75, -56.0], [-62.97000000000003, -56.53], [-63.5, -56.75], [-64.0, -56.54], [-64.5, -56.75], [-64.75, -56.65], [-64.82, -56.68], [-64.97000000000003, -57.03], [-65.32, -57.18], [-65.47000000000003, -57.53], [-66.0, -57.75], [-66.25, -57.65], [-66.32, -57.68], [-66.47000000000003, -58.03], [-67.0, -58.25], [-67.25, -58.15], [-67.5, -58.25], [-68.02999999999997, -58.03], [-68.18, -57.68], [-68.25, -57.65], [-68.5, -57.75], [-69.02999999999997, -57.53], [-69.18, -57.18], [-69.52999999999997, -57.03]]]]}, "2024-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.52999999999997, -57.03], [-69.75, -56.5], [-69.52999999999997, -55.97], [-69.0, -55.75], [-68.75, -55.85], [-68.5, -55.75], [-68.25, -55.85], 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[-69.02999999999997, -57.53], [-69.18, -57.18], [-69.52999999999997, -57.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.052336435148902}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9593331701291665}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.76449157087103, 5.154125360673959, 5.289709559878645]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.959636235600499, 4.438058293788913, 4.452033753798389]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2315747473995864, -1.8882478799341793, -1.758176883053734]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.052336435148902, -2.3073616145074425, -1.9906060252676525]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.81830631127371, -1.4691264741511347, -1.330256177649819]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2111026558993596, -1.8559024175620702, -1.4800198578304604]}}