{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:25:13.906813", "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": "2022-Dec-22_to_2022-Dec-27_294.5_6.0"}, "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": 2022120001021}, "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 22 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 27 2022"}, "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": 70776.66967724124}, "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", "Venezuela, Bolivarian Republic of"]}, "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": 6.0}, "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": 294.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 293.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 297.5}, "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": 6.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-63.82, 5.18], [-63.47, 5.03], [-63.25, 4.5], [-63.35, 4.25], [-63.25, 4.0], [-63.47, 3.47], [-64.0, 3.25], [-64.25, 3.35], [-64.5, 3.25], [-65.03, 3.47], [-65.18, 3.82], [-65.25, 3.85], [-65.5, 3.75], [-66.03, 3.97], [-66.2, 4.38], [-66.5, 4.25], [-67.03, 4.47], [-67.25, 5.0], [-67.15, 5.25], [-67.25, 5.5], [-67.15, 5.75], [-67.25, 6.0], [-67.03, 6.53], [-66.5, 6.75], [-66.25, 6.65], [-66.18, 6.68], [-66.03, 7.03], [-65.5, 7.25], [-65.25, 7.15], [-65.0, 7.25], [-64.47, 7.03], [-64.3, 6.62], [-64.0, 6.75], [-63.75, 6.65], [-63.5, 6.75], [-63.25, 6.65], [-63.0, 6.75], [-62.75, 6.65], [-62.5, 6.75], [-61.97, 6.53], [-61.75, 6.0], [-61.97, 5.47], [-62.5, 5.25], [-62.75, 5.35], [-63.0, 5.25], [-63.25, 5.35], [-63.5, 5.25], [-63.75, 5.35], [-63.82, 5.32], [-63.85, 5.25], [-63.82, 5.18]]]]}}, "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": {"2022-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.02999999999997, 6.53], [-65.5, 6.75], [-64.97000000000003, 6.53], [-64.75, 6.0], [-64.97000000000003, 5.47], [-65.5, 5.25], [-66.02999999999997, 5.47], [-66.25, 6.0], [-66.02999999999997, 6.53]]]]}, "2022-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.02999999999997, 5.47], [-66.25, 6.0], [-66.02999999999997, 6.53], [-65.5, 6.75], [-64.97000000000003, 6.53], [-64.75, 6.0], [-64.52999999999997, 6.53], [-64.0, 6.75], [-63.75, 6.65], [-63.5, 6.75], [-63.25, 6.65], [-63.0, 6.75], [-62.75, 6.65], [-62.5, 6.75], [-61.97000000000003, 6.53], [-61.75, 6.0], [-61.97000000000003, 5.47], [-62.5, 5.25], [-62.75, 5.35], [-63.0, 5.25], [-63.25, 5.35], [-63.5, 5.25], [-63.75, 5.35], [-63.870000000000005, 5.3], [-63.75, 5.0], [-63.97000000000003, 4.47], [-64.5, 4.25], [-64.75, 4.35], [-65.0, 4.25], [-65.52999999999997, 4.47], [-65.75, 5.0], [-65.62, 5.3], [-66.02999999999997, 5.47]], [[-64.87, 5.7], [-64.75, 5.65], [-64.62, 5.7], [-64.75, 6.0], [-64.87, 5.7]]]]}, "2022-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.25, 5.5], [-67.14999999999998, 5.75], [-67.25, 6.0], [-67.02999999999997, 6.53], [-66.5, 6.75], [-66.25, 6.65], [-66.18, 6.68], [-66.02999999999997, 7.03], [-65.5, 7.25], [-65.25, 7.15], [-65.0, 7.25], [-64.47000000000003, 7.03], [-64.30000000000001, 6.62], [-64.0, 6.75], [-63.75, 6.65], [-63.5, 6.75], [-63.25, 6.65], [-63.0, 6.75], [-62.75, 6.65], [-62.5, 6.75], [-61.97000000000003, 6.53], [-61.75, 6.0], [-61.97000000000003, 5.47], [-62.5, 5.25], [-62.75, 5.35], [-63.0, 5.25], [-63.25, 5.35], [-63.5, 5.25], [-63.75, 5.35], [-63.81999999999999, 5.32], [-63.85000000000002, 5.25], [-63.81999999999999, 5.18], [-63.47000000000003, 5.03], [-63.25, 4.5], [-63.35000000000002, 4.25], [-63.25, 4.0], [-63.47000000000003, 3.47], [-64.0, 3.25], [-64.25, 3.35], [-64.5, 3.25], [-65.02999999999997, 3.47], [-65.18, 3.82], [-65.25, 3.85], [-65.5, 3.75], [-66.02999999999997, 3.97], [-66.19999999999999, 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-1.243772492407181]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4171340446354603, -1.898330553372446, -2.8935350528605857, -3.158766751079701, -1.9980558714978642, -1.2566875616957538]}}