{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:22.802906", "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": "2023-Jan-19_to_2023-Jan-24_290.5_-4.0"}, "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": 2023010000930}, "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 19 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 24 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 117397.17962612533}, "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", "Colombia"]}, "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": -4.0}, "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": 290.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 288.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 0.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-68.97, -4.53], [-69.5, -4.75], [-70.03, -4.53], [-70.25, -4.0], [-70.15, -3.75], [-70.25, -3.5], [-70.15, -3.25], [-70.18, -3.18], [-70.53, -3.03], [-70.68, -2.68], [-70.75, -2.65], [-71.0, -2.75], [-71.25, -2.65], [-71.5, -2.75], [-72.03, -2.53], [-72.18, -2.18], [-72.53, -2.03], [-72.75, -1.5], [-72.53, -0.97], [-72.0, -0.75], [-71.75, -0.85], [-71.68, -0.82], [-71.65, -0.75], [-71.75, -0.5], [-71.53, 0.03], [-71.18, 0.18], [-71.03, 0.53], [-70.5, 0.75], [-69.97, 0.53], [-69.8, 0.12], [-69.5, 0.25], [-69.25, 0.15], [-69.18, 0.18], [-69.03, 0.53], [-68.68, 0.68], [-68.53, 1.03], [-68.0, 1.25], [-67.47, 1.03], [-67.32, 0.68], [-66.97, 0.53], [-66.75, 0.0], [-66.97, -0.53], [-67.32, -0.68], [-67.35, -0.75], [-67.25, -1.0], [-67.47, -1.53], [-67.87, -1.7], [-67.75, -2.0], [-67.85, -2.25], [-67.75, -2.5], [-67.85, -2.75], [-67.75, -3.0], [-67.97, -3.53], [-68.32, -3.68], [-68.47, -4.03], [-68.82, -4.18], [-68.97, -4.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America", "N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.02999999999997, -3.47], [-69.5, -3.25], [-68.97000000000003, -3.47], [-68.75, -4.0], [-68.97000000000003, -4.53], [-69.5, -4.75], [-70.02999999999997, -4.53], [-70.25, -4.0], [-70.02999999999997, -3.47]]]]}, "2023-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.02999999999997, -3.47], [-69.5, -3.25], [-68.97000000000003, -3.47], [-68.75, -4.0], [-68.97000000000003, -4.53], [-69.5, -4.75], [-70.02999999999997, -4.53], [-70.25, -4.0], [-70.02999999999997, -3.47]]]]}, "2023-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.02999999999997, -3.47], [-69.5, -3.25], [-68.97000000000003, -3.47], [-68.75, -4.0], [-68.97000000000003, -4.53], [-69.5, -4.75], [-70.02999999999997, -4.53], [-70.25, -4.0], [-70.02999999999997, -3.47]]]]}, "2023-01-22T11:30:00.000000000": 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t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8521179943912784, -1.7866338416010308, -1.3491724288201112, -1.923076077157475, -2.4471454701532593, -1.6233057161699662]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.040998548939861, -1.9519905563354971, -1.4623533537157791, -1.4475209255040669, -1.9348809509965221, -1.2533905884106378]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.040998548939861, -1.9519905563354971, -1.4623533537157791, -1.8984200635772959, -2.5419764276309644, -1.5337828643116234]}}