{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:30.476783", "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-Nov-17_to_2022-Nov-19_290.0_7.5"}, "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": 2022110000673}, "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": "November 17 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 19 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 70450.93355250012}, "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": ["Colombia", "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": 7.5}, "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": 290.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 289.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 7.0], [-71.65, 7.25], [-71.75, 7.5], [-71.53, 8.03], [-71.18, 8.18], [-71.03, 8.53], [-70.68, 8.68], [-70.65, 8.75], [-70.75, 9.0], [-70.53, 9.53], [-70.0, 9.75], [-69.75, 9.65], [-69.5, 9.75], [-69.25, 9.65], [-69.0, 9.75], [-68.47, 9.53], [-68.25, 9.0], [-68.35, 8.75], [-68.25, 8.5], [-68.35, 8.25], [-68.32, 8.18], [-67.97, 8.03], [-67.75, 7.5], [-67.97, 6.97], [-68.5, 6.75], [-68.75, 6.85], [-68.82, 6.82], [-68.97, 6.47], [-69.5, 6.25], [-69.75, 6.35], [-69.82, 6.32], [-69.97, 5.97], [-70.32, 5.82], [-70.47, 5.47], [-71.0, 5.25], [-71.53, 5.47], [-71.75, 6.0], [-71.65, 6.25], [-71.75, 6.5], [-71.65, 6.75], [-71.75, 7.0]]]]}}, "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": {"2022-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 6.5], [-71.64999999999998, 6.75], [-71.75, 7.0], [-71.64999999999998, 7.25], [-71.75, 7.5], [-71.52999999999997, 8.03], [-71.18, 8.18], [-71.02999999999997, 8.53], [-70.68, 8.68], [-70.64999999999998, 8.75], [-70.75, 9.0], [-70.52999999999997, 9.53], [-70.0, 9.75], [-69.75, 9.65], [-69.5, 9.75], [-69.25, 9.65], [-69.0, 9.75], [-68.47000000000003, 9.53], [-68.25, 9.0], [-68.35000000000002, 8.75], [-68.25, 8.5], [-68.35000000000002, 8.25], [-68.32, 8.18], [-67.97000000000003, 8.03], [-67.75, 7.5], [-67.97000000000003, 6.97], [-68.5, 6.75], [-68.75, 6.85], [-68.82, 6.82], [-68.97000000000003, 6.47], [-69.5, 6.25], [-69.75, 6.35], [-69.82, 6.32], [-69.97000000000003, 5.97], [-70.32, 5.82], [-70.47000000000003, 5.47], [-71.0, 5.25], [-71.52999999999997, 5.47], [-71.75, 6.0], [-71.64999999999998, 6.25], [-71.75, 6.5]]]]}, "2022-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 6.5], [-71.64999999999998, 6.75], [-71.75, 7.0], [-71.64999999999998, 7.25], [-71.75, 7.5], [-71.52999999999997, 8.03], [-71.18, 8.18], [-71.02999999999997, 8.53], [-70.68, 8.68], [-70.64999999999998, 8.75], [-70.75, 9.0], [-70.52999999999997, 9.53], [-70.0, 9.75], [-69.75, 9.65], [-69.5, 9.75], [-69.25, 9.65], [-69.0, 9.75], [-68.47000000000003, 9.53], [-68.25, 9.0], [-68.35000000000002, 8.75], [-68.25, 8.5], [-68.35000000000002, 8.25], [-68.32, 8.18], [-67.97000000000003, 8.03], [-67.75, 7.5], [-67.97000000000003, 6.97], [-68.5, 6.75], [-68.75, 6.85], [-68.82, 6.82], [-68.97000000000003, 6.47], [-69.5, 6.25], [-69.75, 6.35], [-69.82, 6.32], [-69.97000000000003, 5.97], [-70.32, 5.82], [-70.47000000000003, 5.47], [-71.0, 5.25], [-71.52999999999997, 5.47], [-71.75, 6.0], [-71.64999999999998, 6.25], [-71.75, 6.5]]]]}, "2022-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 6.5], [-71.64999999999998, 6.75], [-71.75, 7.0], [-71.64999999999998, 7.25], [-71.75, 7.5], [-71.52999999999997, 8.03], [-71.18, 8.18], [-71.02999999999997, 8.53], [-70.68, 8.68], [-70.64999999999998, 8.75], [-70.75, 9.0], [-70.52999999999997, 9.53], [-70.0, 9.75], [-69.75, 9.65], [-69.5, 9.75], [-69.25, 9.65], [-69.0, 9.75], [-68.47000000000003, 9.53], [-68.25, 9.0], [-68.35000000000002, 8.75], [-68.25, 8.5], [-68.35000000000002, 8.25], [-68.32, 8.18], [-67.97000000000003, 8.03], [-67.75, 7.5], [-67.97000000000003, 6.97], [-68.5, 6.75], [-68.75, 6.85], [-68.82, 6.82], [-68.97000000000003, 6.47], [-69.5, 6.25], [-69.75, 6.35], [-69.82, 6.32], [-69.97000000000003, 5.97], [-70.32, 5.82], [-70.47000000000003, 5.47], [-71.0, 5.25], [-71.52999999999997, 5.47], [-71.75, 6.0], [-71.64999999999998, 6.25], [-71.75, 6.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3825873246013884}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6513610170245836}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.293798889450954, 25.084929958439545, 25.74178155558201]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.0192793826742, 24.026149648772673, 24.396245104767047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7060688809336013, -1.9387932460830173, -1.3092209240571324]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3825873246013884, -2.2347596215615795, -1.5364029945858988]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9613474930146098, -2.2366658567395286, -1.4983940630642671]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.644021531056028, -2.7443652567030936, -1.717063792118878]}}