{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:25.604952", "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-Dec-15_to_2024-Dec-18_287.5_-9.0"}, "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": 2024120000395}, "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 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 18 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": 61188.16102308041}, "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": ["Brazil", "Peru"]}, "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": -9.0}, "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": 287.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 286.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-71.75, -8.5], [-71.85, -8.75], [-71.82, -8.82], [-71.47, -8.97], [-71.25, -9.5], [-71.47, -10.03], [-72.0, -10.25], [-72.25, -10.15], [-72.5, -10.25], [-73.03, -10.03], [-73.18, -9.68], [-73.25, -9.65], [-73.5, -9.75], [-74.03, -9.53], [-74.18, -9.18], [-74.53, -9.03], [-74.75, -8.5], [-74.65, -8.25], [-74.75, -8.0], [-74.53, -7.47], [-74.18, -7.32], [-74.15, -7.25], [-74.25, -7.0], [-74.03, -6.47], [-73.5, -6.25], [-73.25, -6.35], [-73.0, -6.25], [-72.47, -6.47], [-72.32, -6.82], [-72.25, -6.85], [-72.0, -6.75], [-71.75, -6.85], [-71.5, -6.75], [-70.97, -6.97], [-70.75, -7.5], [-70.97, -8.03], [-71.5, -8.25], [-71.75, -8.15], [-71.82, -8.18], [-71.85, -8.25], [-71.75, -8.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America", "N.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.02999999999997, -8.53], [-74.25, -8.0], [-74.02999999999997, -7.47], [-73.5, -7.25], [-73.0, -7.46], [-72.5, -7.25], [-71.97000000000003, -7.47], [-71.75, -8.0], [-71.95999999999998, -8.5], [-71.75, -9.0], [-71.85000000000002, -9.25], [-71.75, -9.5], [-71.97000000000003, -10.03], [-72.5, -10.25], [-73.02999999999997, -10.03], [-73.18, -9.68], [-73.52999999999997, -9.53], [-73.75, -9.0], [-73.64999999999998, -8.75], [-73.68, -8.68], [-74.02999999999997, -8.53]]]]}, "2024-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -8.0], [-74.52999999999997, -7.47], [-74.18, -7.32], [-74.14999999999998, -7.25], [-74.25, -7.0], [-74.02999999999997, -6.47], [-73.5, -6.25], [-73.25, -6.35], [-73.0, -6.25], [-72.47000000000003, -6.47], [-72.32, -6.82], [-72.25, -6.85], [-72.0, -6.75], [-71.75, -6.85], [-71.5, -6.75], [-70.97000000000003, -6.97], [-70.75, -7.5], [-70.97000000000003, -8.03], [-71.5, -8.25], [-71.75, -8.15], [-71.82, -8.18], [-71.85000000000002, -8.25], [-71.75, -8.5], [-71.85000000000002, -8.75], [-71.82, -8.82], [-71.47000000000003, -8.97], [-71.25, -9.5], [-71.47000000000003, -10.03], [-72.0, -10.25], [-72.25, -10.15], [-72.5, -10.25], [-73.02999999999997, -10.03], [-73.18, -9.68], [-73.25, -9.65], [-73.5, -9.75], [-74.02999999999997, -9.53], [-74.18, -9.18], [-74.52999999999997, -9.03], [-74.75, -8.5], [-74.64999999999998, -8.25], [-74.75, -8.0]]]]}, "2024-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -8.0], [-74.52999999999997, -7.47], [-74.18, -7.32], [-74.14999999999998, -7.25], [-74.25, -7.0], [-74.02999999999997, -6.47], [-73.5, -6.25], [-73.25, -6.35], [-73.0, -6.25], [-72.47000000000003, -6.47], [-72.32, -6.82], [-72.25, -6.85], [-72.0, -6.75], [-71.75, -6.85], [-71.5, -6.75], [-70.97000000000003, -6.97], [-70.75, -7.5], [-70.97000000000003, -8.03], [-71.5, -8.25], [-71.75, -8.15], [-71.82, -8.18], [-71.85000000000002, -8.25], [-71.75, -8.5], [-71.85000000000002, -8.75], [-71.82, -8.82], [-71.47000000000003, -8.97], [-71.25, -9.5], [-71.47000000000003, -10.03], [-72.0, -10.25], [-72.25, -10.15], [-72.5, -10.25], [-73.02999999999997, -10.03], [-73.18, -9.68], [-73.25, -9.65], [-73.5, -9.75], [-74.02999999999997, -9.53], [-74.18, -9.18], [-74.52999999999997, -9.03], [-74.75, -8.5], [-74.64999999999998, -8.25], [-74.75, -8.0]]]]}, "2024-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -8.0], [-74.52999999999997, -7.47], [-74.18, -7.32], [-74.14999999999998, -7.25], [-74.25, -7.0], [-74.02999999999997, -6.47], [-73.5, -6.25], [-73.25, -6.35], [-73.0, -6.25], [-72.47000000000003, -6.47], [-72.32, -6.82], [-72.25, -6.85], [-72.0, -6.75], [-71.75, -6.85], [-71.5, -6.75], [-70.97000000000003, -6.97], [-70.75, -7.5], [-70.97000000000003, -8.03], [-71.5, -8.25], [-71.75, -8.15], [-71.82, -8.18], [-71.85000000000002, -8.25], [-71.75, -8.5], [-71.85000000000002, -8.75], [-71.82, -8.82], [-71.47000000000003, -8.97], [-71.25, -9.5], [-71.47000000000003, -10.03], [-72.0, -10.25], [-72.25, -10.15], [-72.5, -10.25], [-73.02999999999997, -10.03], [-73.18, -9.68], [-73.25, -9.65], [-73.5, -9.75], [-74.02999999999997, -9.53], [-74.18, -9.18], [-74.52999999999997, -9.03], [-74.75, -8.5], [-74.64999999999998, -8.25], [-74.75, -8.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.382778331077759}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4426803739887775}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.24219580756295, 24.31763610839846, 24.359281412760424, 23.762348175048828]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.67755279541018, 23.455005900065146, 23.74542643229171, 23.191002146403036]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2627189938152128, -1.2660637119044367, -1.2410711132062573, -1.8748947109077079]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4455301666540663, -1.6527014901183747, -1.4773224409045156, -2.382778331077759]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.336085288040475, -1.4142146106731328, -1.4363209790017764, -2.226761748624365]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5028970659979501, -1.6682587818758838, -1.6724261439265358, -2.872523411176324]}}