{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:00.386448", "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": "2025-Jan-23_to_2025-Jan-26_292.0_5.5"}, "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": 2025010000633}, "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 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 26 2025"}, "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": 160276.5676941717}, "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", "Venezuela, Bolivarian Republic of"]}, "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": 5.5}, "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": 292.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "292.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-65.53, 2.97], [-65.68, 3.32], [-65.75, 3.35], [-65.82, 3.32], [-65.97, 2.97], [-66.5, 2.75], [-66.75, 2.85], [-67.0, 2.75], [-67.25, 2.85], [-67.5, 2.75], [-67.75, 2.85], [-67.82, 2.82], [-67.85, 2.75], [-67.75, 2.5], [-67.97, 1.97], [-68.5, 1.75], [-68.75, 1.85], [-69.0, 1.75], [-69.53, 1.97], [-69.68, 2.32], [-69.75, 2.35], [-70.0, 2.25], [-70.53, 2.47], [-70.75, 3.0], [-70.54, 3.5], [-70.75, 4.0], [-70.65, 4.25], [-70.75, 4.5], [-70.65, 4.75], [-70.75, 5.0], [-70.53, 5.53], [-70.18, 5.68], [-70.15, 5.75], [-70.25, 6.0], [-70.03, 6.53], [-69.5, 6.75], [-68.97, 6.53], [-68.82, 6.18], [-68.75, 6.15], [-68.5, 6.25], [-68.25, 6.15], [-68.0, 6.25], [-67.75, 6.15], [-67.5, 6.25], [-67.25, 6.15], [-67.0, 6.25], [-66.47, 6.03], [-66.25, 5.5], [-66.03, 6.03], [-65.5, 6.25], [-64.97, 6.03], [-64.75, 5.5], [-64.85, 5.25], [-64.82, 5.18], [-64.75, 5.15], [-64.5, 5.25], [-63.97, 5.03], [-63.82, 4.68], [-63.47, 4.53], [-63.25, 4.0], [-63.47, 3.47], [-63.82, 3.32], [-63.97, 2.97], [-64.5, 2.75], [-64.75, 2.85], [-65.0, 2.75], [-65.53, 2.97]], [[-66.35, 5.25], [-66.25, 5.0], [-66.15, 5.25], [-66.25, 5.5], [-66.35, 5.25]], [[-66.37, 4.7], [-66.25, 4.65], [-66.18, 4.68], [-66.15, 4.75], [-66.25, 5.0], [-66.37, 4.7]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.52999999999997, 4.03], [-65.0, 4.25], [-64.47000000000003, 4.03], [-64.25, 3.5], [-64.47000000000003, 2.97], [-65.0, 2.75], [-65.52999999999997, 2.97], [-65.75, 3.5], [-65.52999999999997, 4.03]]]]}, "2025-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, 4.5], [-70.64999999999998, 4.75], [-70.75, 5.0], [-70.52999999999997, 5.53], [-70.18, 5.68], [-70.14999999999998, 5.75], [-70.25, 6.0], [-70.02999999999997, 6.53], [-69.5, 6.75], [-68.97000000000003, 6.53], [-68.82, 6.18], [-68.75, 6.15], [-68.5, 6.25], [-68.25, 6.15], 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23.833801719469875]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.310225423177087, 18.909089660644554, 19.277890777587913, 18.82535069783529]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7445054611933983, -1.6079916505196157, -2.3186275239370455, -1.9758811804627117]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7445054611933983, -2.135525114732559, -3.66572997815166, -3.3741270500665337]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.817230090209135, -1.556971694626451, -2.1393673022993793, -1.7767991687089624]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.817230090209135, -2.30972527996898, -3.2340571465447163, -2.5399118566020156]}}