{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:57.472332", "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-16_to_2025-Jan-21_302.0_-10.5"}, "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": 2025010000450}, "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 16 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 21 2025"}, "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": 94332.28420563616}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -10.5}, "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": 302.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.5}, "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": -12.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-56.35, -11.75], [-56.25, -12.0], [-56.47, -12.53], [-57.0, -12.75], [-57.53, -12.53], [-57.75, -12.0], [-57.65, -11.75], [-57.68, -11.68], [-58.03, -11.53], [-58.18, -11.18], [-58.25, -11.15], [-58.32, -11.18], [-58.47, -11.53], [-59.0, -11.75], [-59.25, -11.65], [-59.5, -11.75], [-60.03, -11.53], [-60.25, -11.0], [-60.03, -10.47], [-59.68, -10.32], [-59.53, -9.97], [-59.18, -9.82], [-59.15, -9.75], [-59.25, -9.5], [-59.15, -9.25], [-59.25, -9.0], [-59.15, -8.75], [-59.25, -8.5], [-59.03, -7.97], [-58.5, -7.75], [-58.25, -7.85], [-58.0, -7.75], [-57.75, -7.85], [-57.5, -7.75], [-56.97, -7.97], [-56.82, -8.32], [-56.47, -8.47], [-56.25, -9.0], [-56.35, -9.25], [-56.3, -9.38], [-56.0, -9.25], [-55.75, -9.35], [-55.5, -9.25], [-54.97, -9.47], [-54.75, -10.0], [-54.85, -10.25], [-54.75, -10.5], [-54.85, -10.75], [-54.75, -11.0], [-54.97, -11.53], [-55.5, -11.75], [-56.0, -11.54], [-56.32, -11.68], [-56.35, -11.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.52999999999997, -9.97], [-58.0, -9.75], [-57.47000000000003, -9.97], [-57.25, -10.5], [-57.47000000000003, -11.03], [-58.0, -11.25], [-58.52999999999997, -11.03], [-58.75, -10.5], [-58.52999999999997, -9.97]]]]}, "2025-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.52999999999997, -9.97], [-58.0, -9.75], [-57.47000000000003, -9.97], [-57.25, -10.5], [-57.47000000000003, -11.03], [-58.0, -11.25], [-58.52999999999997, -11.03], [-58.75, -10.5], [-58.52999999999997, -9.97]]]]}, "2025-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.52999999999997, -9.97], [-59.18000000000001, -9.82], [-59.02999999999997, -9.47], [-58.5, -9.25], [-57.97000000000003, -9.47], [-57.81999999999999, -9.82], [-57.47000000000003, -9.97], [-57.25, -10.5], [-57.43000000000001, -10.93], 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t2m", "description": "The daily evolution of mean t2m.", "value": [23.626648203531943, 23.5532051086426, 23.269441223144554, 23.56532879080828, 23.14507409372635, 23.483600214476212]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.626648203531943, 23.5532051086426, 22.645722961425804, 22.834841664632165, 22.55227177937826, 22.47938944498702]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.109405671022273, -1.194628602731143, -1.487965829218119, -1.3681924399299457, -1.79032981135989, -1.4598315078006312]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.109405671022273, -1.194628602731143, -1.7552551893292616, -1.681785667782492, -2.3263136726298512, -1.9660248622406016]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.259566202599748, -1.3240383525244617, -1.5968775981022452, -1.5017281806321663, -1.961788288648539, -1.6179548335916512]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.259566202599748, -1.3240383525244617, -1.8733824941984236, -1.7714471316551577, -2.4716968372100028, -2.171037940493485]}}