{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:32.796797", "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-Aug-25_to_2024-Aug-27_305.0_-25.5"}, "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": 2024080000647}, "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": "August 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 27 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": 78126.59924795282}, "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", "Paraguay"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -25.5}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\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": 305.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-59.75, -25.0], [-59.53, -24.47], [-59.18, -24.32], [-59.03, -23.97], [-58.5, -23.75], [-58.25, -23.85], [-58.0, -23.75], [-57.75, -23.85], [-57.5, -23.75], [-57.25, -23.85], [-57.0, -23.75], [-56.47, -23.97], [-56.25, -24.5], [-56.35, -24.75], [-56.32, -24.82], [-56.25, -24.85], [-56.0, -24.75], [-55.75, -24.85], [-55.5, -24.75], [-55.25, -24.85], [-55.0, -24.75], [-54.47, -24.97], [-54.25, -25.5], [-54.35, -25.75], [-54.25, -26.0], [-54.47, -26.53], [-55.0, -26.75], [-55.3, -26.62], [-55.47, -27.03], [-56.0, -27.25], [-56.25, -27.15], [-56.5, -27.25], [-57.03, -27.03], [-57.18, -26.68], [-57.25, -26.65], [-57.5, -26.75], [-57.75, -26.65], [-58.0, -26.75], [-58.25, -26.65], [-58.5, -26.75], [-58.75, -26.65], [-59.0, -26.75], [-59.53, -26.53], [-59.75, -26.0], [-59.65, -25.75], [-59.75, -25.5], [-59.65, -25.25], [-59.75, -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": {"2024-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.75, -25.5], [-59.64999999999998, -25.25], [-59.75, -25.0], [-59.52999999999997, -24.47], [-59.18000000000001, -24.32], [-59.02999999999997, -23.97], [-58.5, -23.75], [-58.25, -23.85], [-58.0, -23.75], [-57.75, -23.85], [-57.5, -23.75], [-57.25, -23.85], [-57.0, -23.75], [-56.47000000000003, -23.97], [-56.25, -24.5], [-56.35000000000002, -24.75], [-56.31999999999999, -24.82], [-56.25, -24.85], [-56.0, -24.75], [-55.75, -24.85], [-55.5, -24.75], [-55.25, -24.85], [-55.0, -24.75], [-54.47000000000003, -24.97], [-54.25, -25.5], [-54.35000000000002, -25.75], [-54.25, -26.0], [-54.47000000000003, -26.53], [-55.0, -26.75], [-55.30000000000001, -26.62], [-55.47000000000003, -27.03], [-56.0, -27.25], [-56.25, -27.15], [-56.5, -27.25], [-57.02999999999997, -27.03], [-57.18000000000001, -26.68], [-57.25, -26.65], [-57.5, -26.75], [-57.75, -26.65], [-58.0, -26.75], [-58.25, -26.65], [-58.5, -26.75], [-58.75, -26.65], [-59.0, -26.75], [-59.52999999999997, -26.53], [-59.75, -26.0], [-59.64999999999998, -25.75], [-59.75, -25.5]]]]}, "2024-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.75, -25.5], [-59.64999999999998, -25.25], [-59.75, -25.0], [-59.52999999999997, -24.47], [-59.18000000000001, -24.32], [-59.02999999999997, -23.97], [-58.5, -23.75], [-58.25, -23.85], [-58.0, -23.75], [-57.75, -23.85], [-57.5, -23.75], [-57.25, -23.85], [-57.0, -23.75], [-56.47000000000003, -23.97], [-56.25, -24.5], [-56.35000000000002, -24.75], [-56.31999999999999, -24.82], [-56.25, -24.85], [-56.0, -24.75], [-55.75, -24.85], [-55.5, -24.75], [-55.25, -24.85], [-55.0, -24.75], [-54.47000000000003, -24.97], [-54.25, -25.5], [-54.35000000000002, -25.75], [-54.25, -26.0], [-54.47000000000003, -26.53], [-55.0, -26.75], [-55.30000000000001, -26.62], [-55.47000000000003, -27.03], [-56.0, -27.25], [-56.25, -27.15], [-56.5, -27.25], [-57.02999999999997, -27.03], [-57.18000000000001, -26.68], [-57.25, -26.65], [-57.5, -26.75], [-57.75, -26.65], [-58.0, -26.75], [-58.25, -26.65], [-58.5, -26.75], [-58.75, -26.65], [-59.0, -26.75], [-59.52999999999997, -26.53], [-59.75, -26.0], [-59.64999999999998, -25.75], [-59.75, -25.5]]]]}, "2024-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.75, -25.5], [-59.64999999999998, -25.25], [-59.75, -25.0], [-59.52999999999997, -24.47], [-59.18000000000001, -24.32], [-59.02999999999997, -23.97], [-58.5, -23.75], [-58.25, -23.85], [-58.0, -23.75], [-57.75, -23.85], [-57.5, -23.75], [-57.25, -23.85], [-57.0, -23.75], [-56.47000000000003, -23.97], [-56.25, -24.5], [-56.35000000000002, -24.75], [-56.31999999999999, -24.82], [-56.25, -24.85], [-56.0, -24.75], [-55.75, -24.85], [-55.5, -24.75], [-55.25, -24.85], [-55.0, -24.75], [-54.47000000000003, -24.97], [-54.25, -25.5], [-54.35000000000002, -25.75], [-54.25, -26.0], [-54.47000000000003, -26.53], [-55.0, -26.75], [-55.30000000000001, -26.62], [-55.47000000000003, -27.03], [-56.0, -27.25], [-56.25, -27.15], [-56.5, -27.25], [-57.02999999999997, -27.03], [-57.18000000000001, -26.68], [-57.25, -26.65], [-57.5, -26.75], [-57.75, -26.65], [-58.0, -26.75], [-58.25, -26.65], [-58.5, -26.75], [-58.75, -26.65], [-59.0, -26.75], [-59.52999999999997, -26.53], [-59.75, -26.0], [-59.64999999999998, -25.75], [-59.75, -25.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.899950406262008}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.552551554403076}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.297266478837741, 11.0624103536274, 12.745569710880375]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.550330027666917, 9.770022857680942, 11.778531049597348]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.756887470440073, -9.231788462814103, -7.668978729955053]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.899950406262008, -9.83621693236114, -8.13393168101436]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6313560868628547, -1.7184878689867824, -1.4253558352566575]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0875712377319333, -2.032088799207524, -1.5320859603663037]}}