{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:21.416238", "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-18_to_2023-Jan-21_288.5_-7.0"}, "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": 2023010000873}, "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 18 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 21 2023"}, "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": 199428.41127122918}, "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": -7.0}, "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": 288.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "288.5\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": 291.0}, "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": -4.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-74.54, -7.5], [-74.75, -7.0], [-74.65, -6.75], [-74.75, -6.5], [-74.53, -5.97], [-74.18, -5.82], [-74.03, -5.47], [-73.68, -5.32], [-73.53, -4.97], [-73.0, -4.75], [-72.7, -4.88], [-72.53, -4.47], [-72.18, -4.32], [-72.03, -3.97], [-71.5, -3.75], [-70.97, -3.97], [-70.82, -4.32], [-70.75, -4.35], [-70.5, -4.25], [-69.97, -4.47], [-69.82, -4.82], [-69.47, -4.97], [-69.32, -5.32], [-69.25, -5.35], [-69.0, -5.25], [-68.47, -5.47], [-68.25, -6.0], [-68.35, -6.25], [-68.25, -6.5], [-68.35, -6.75], [-68.25, -7.0], [-68.47, -7.53], [-68.87, -7.7], [-68.82, -7.82], [-68.47, -7.97], [-68.25, -8.5], [-68.35, -8.75], [-68.25, -9.0], [-68.47, -9.53], [-68.82, -9.68], [-68.97, -10.03], [-69.5, -10.25], [-69.75, -10.15], [-70.0, -10.25], [-70.53, -10.03], [-70.68, -9.68], [-71.03, -9.53], [-71.25, -9.0], [-71.15, -8.75], [-71.25, -8.5], [-71.15, -8.25], [-71.18, -8.18], [-71.25, -8.15], [-71.5, -8.25], [-71.75, -8.15], [-72.0, -8.25], [-72.25, -8.15], [-72.5, -8.25], [-72.75, -8.15], [-72.82, -8.18], [-72.97, -8.53], [-73.5, -8.75], [-73.75, -8.65], [-74.0, -8.75], [-74.53, -8.53], [-74.75, -8.0], [-74.54, -7.5]]]]}}, "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": {"2023-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.0, -8.75], [-74.52999999999997, -8.53], [-74.75, -8.0], [-74.52999999999997, -7.47], [-74.0, -7.25], [-73.75, -7.35], [-73.5, -7.25], [-72.97000000000003, -7.47], [-72.75, -8.0], [-72.97000000000003, -8.53], [-73.5, -8.75], [-73.75, -8.65], [-74.0, -8.75]]]]}, "2023-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -6.5], [-74.52999999999997, -5.97], [-74.18, -5.82], [-74.02999999999997, -5.47], [-73.68, -5.32], [-73.52999999999997, -4.97], [-73.0, -4.75], [-72.69999999999999, -4.88], [-72.52999999999997, -4.47], [-72.18, -4.32], [-72.02999999999997, -3.97], [-71.5, 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-1.4962633401529366]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4793113414428376, -1.800917002722997, -2.995367190022307, -2.3055139979734918]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.338938536323363, -1.6141448398728735, -2.566527500757562, -1.6586101658118788]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4474125894244456, -2.11563622285706, -3.2978658660294484, -2.5422031894996393]}}