{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:59.247816", "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-08_to_2024-Jan-11_303.5_-28.5"}, "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": 2024010000243}, "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 08 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": 4}, "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": 94351.50107719805}, "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", "Brazil", "Uruguay"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America", "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": -28.5}, "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": 303.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 301.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -28.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-59.25, -29.0], [-59.03, -28.47], [-58.68, -28.32], [-58.53, -27.97], [-58.0, -27.75], [-57.75, -27.85], [-57.68, -27.82], [-57.53, -27.47], [-57.0, -27.25], [-56.75, -27.35], [-56.5, -27.25], [-56.25, -27.35], [-56.0, -27.25], [-55.75, -27.35], [-55.5, -27.25], [-54.97, -27.47], [-54.75, -28.0], [-54.85, -28.25], [-54.75, -28.5], [-54.85, -28.75], [-54.75, -29.0], [-54.85, -29.25], [-54.75, -29.5], [-54.97, -30.03], [-55.32, -30.18], [-55.47, -30.53], [-56.0, -30.75], [-56.25, -30.65], [-56.32, -30.68], [-56.47, -31.03], [-57.0, -31.25], [-57.25, -31.15], [-57.5, -31.25], [-57.75, -31.15], [-58.0, -31.25], [-58.25, -31.15], [-58.5, -31.25], [-58.75, -31.15], [-59.0, -31.25], [-59.53, -31.03], [-59.75, -30.5], [-59.53, -29.97], [-59.18, -29.82], [-59.15, -29.75], [-59.25, -29.5], [-59.15, -29.25], [-59.25, -29.0]]]]}}, "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": 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[-59.52999999999997, -29.97], [-59.18000000000001, -29.82], [-59.14999999999998, -29.75]]]]}, "2024-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.14999999999998, -29.75], [-59.25, -29.5], [-59.14999999999998, -29.25], [-59.25, -29.0], [-59.02999999999997, -28.47], [-58.68000000000001, -28.32], [-58.52999999999997, -27.97], [-58.0, -27.75], [-57.75, -27.85], [-57.68000000000001, -27.82], [-57.52999999999997, -27.47], [-57.0, -27.25], [-56.75, -27.35], [-56.5, -27.25], [-56.25, -27.35], [-56.0, -27.25], [-55.75, -27.35], [-55.5, -27.25], [-54.97000000000003, -27.47], [-54.75, -28.0], [-54.85000000000002, -28.25], [-54.75, -28.5], [-54.85000000000002, -28.75], [-54.75, -29.0], [-54.85000000000002, -29.25], [-54.75, -29.5], [-54.97000000000003, -30.03], [-55.31999999999999, -30.18], [-55.47000000000003, -30.53], [-56.0, -30.75], [-56.25, -30.65], [-56.31999999999999, -30.68], [-56.47000000000003, -31.03], [-57.0, -31.25], [-57.25, -31.15], [-57.5, -31.25], 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{"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.453953508934319}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.128059104125223}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.627616274918637, 22.766137525504632, 21.841814944223472, 23.729018371876805]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.785064109527582, 21.6963267226713, 21.275841765687233, 23.33430490941265]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.983435758593131, -3.850910042601208, -4.7143466604857975, -3.335993653152123]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.862473460178535, -4.393609378956626, -5.453953508934319, -3.898534546708561]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.63979893184204, -1.5489261715647837, -1.9192651815771402, -1.5425664769931944]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9846261489872532, -1.8953397761298374, -2.3744225722463717, -1.780939615796469]}}