{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:52.219216", "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-03_to_2025-Jan-06_287.0_4.0"}, "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": 2025010000142}, "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 03 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 06 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": 55501.40487000548}, "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"]}, "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": 4.0}, "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": 287.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 286.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-73.53, 5.03], [-73.18, 5.18], [-73.03, 5.53], [-72.68, 5.68], [-72.53, 6.03], [-72.0, 6.25], [-71.47, 6.03], [-71.25, 5.5], [-71.35, 5.25], [-71.25, 5.0], [-71.35, 4.75], [-71.25, 4.5], [-71.35, 4.25], [-71.32, 4.18], [-70.97, 4.03], [-70.75, 3.5], [-70.85, 3.25], [-70.75, 3.0], [-70.97, 2.47], [-71.5, 2.25], [-71.75, 2.35], [-72.0, 2.25], [-72.25, 2.35], [-72.5, 2.25], [-73.03, 2.47], [-73.18, 2.82], [-73.25, 2.85], [-73.5, 2.75], [-74.03, 2.97], [-74.25, 3.5], [-74.15, 3.75], [-74.25, 4.0], [-74.03, 4.53], [-73.68, 4.68], [-73.53, 5.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America", "N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.25, 4.0], [-74.02999999999997, 4.53], [-73.68, 4.68], [-73.52999999999997, 5.03], [-73.0, 5.25], [-72.75, 5.15], [-72.5, 5.25], [-71.97000000000003, 5.03], [-71.82, 4.68], [-71.47000000000003, 4.53], [-71.32, 4.18], [-70.97000000000003, 4.03], [-70.75, 3.5], [-70.85000000000002, 3.25], [-70.75, 3.0], [-70.97000000000003, 2.47], [-71.5, 2.25], [-71.75, 2.35], [-72.0, 2.25], [-72.25, 2.35], [-72.5, 2.25], [-73.02999999999997, 2.47], [-73.18, 2.82], [-73.25, 2.85], [-73.5, 2.75], [-74.02999999999997, 2.97], [-74.25, 3.5], [-74.14999999999998, 3.75], [-74.25, 4.0]]]]}, "2025-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.25, 4.0], [-74.02999999999997, 4.53], [-73.68, 4.68], [-73.52999999999997, 5.03], [-73.18, 5.18], [-73.02999999999997, 5.53], [-72.68, 5.68], [-72.52999999999997, 6.03], [-72.0, 6.25], [-71.47000000000003, 6.03], [-71.25, 5.5], [-71.35000000000002, 5.25], [-71.25, 5.0], [-71.35000000000002, 4.75], [-71.25, 4.5], [-71.35000000000002, 4.25], [-71.32, 4.18], [-70.97000000000003, 4.03], [-70.75, 3.5], [-70.85000000000002, 3.25], [-70.75, 3.0], [-70.97000000000003, 2.47], [-71.5, 2.25], [-71.75, 2.35], [-72.0, 2.25], [-72.25, 2.35], [-72.5, 2.25], [-73.02999999999997, 2.47], [-73.18, 2.82], [-73.25, 2.85], [-73.5, 2.75], [-74.02999999999997, 2.97], [-74.25, 3.5], [-74.14999999999998, 3.75], [-74.25, 4.0]]]]}, "2025-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.25, 4.0], [-74.02999999999997, 4.53], [-73.68, 4.68], [-73.52999999999997, 5.03], [-73.18, 5.18], [-73.02999999999997, 5.53], [-72.68, 5.68], [-72.52999999999997, 6.03], [-72.0, 6.25], [-71.47000000000003, 6.03], [-71.25, 5.5], [-71.35000000000002, 5.25], [-71.25, 5.0], [-71.35000000000002, 4.75], [-71.25, 4.5], [-71.35000000000002, 4.25], [-71.32, 4.18], [-70.97000000000003, 4.03], [-70.75, 3.5], [-70.85000000000002, 3.25], [-70.75, 3.0], [-70.97000000000003, 2.47], [-71.5, 2.25], [-71.75, 2.35], [-72.0, 2.25], [-72.25, 2.35], [-72.5, 2.25], [-73.02999999999997, 2.47], [-73.18, 2.82], [-73.25, 2.85], [-73.5, 2.75], [-74.02999999999997, 2.97], [-74.25, 3.5], [-74.14999999999998, 3.75], [-74.25, 4.0]]]]}, "2025-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.02999999999997, 3.47], [-74.25, 4.0], [-74.02999999999997, 4.53], [-73.68, 4.68], [-73.52999999999997, 5.03], [-73.18, 5.18], [-73.02999999999997, 5.53], [-72.68, 5.68], [-72.52999999999997, 6.03], [-72.0, 6.25], [-71.47000000000003, 6.03], [-71.25, 5.5], [-71.35000000000002, 5.25], [-71.25, 5.0], [-71.35000000000002, 4.75], [-71.25, 4.5], [-71.35000000000002, 4.25], [-71.32, 4.18], [-70.97000000000003, 4.03], [-70.75, 3.5], [-70.85000000000002, 3.25], [-70.75, 3.0], [-70.97000000000003, 2.47], [-71.5, 2.25], [-71.75, 2.35], [-72.0, 2.25], [-72.25, 2.35], [-72.5, 2.25], [-73.02999999999997, 2.47], [-73.18, 2.82], [-73.52999999999997, 2.97], [-73.68, 3.32], [-74.02999999999997, 3.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8813071809057647}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7188888537140514}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.865375409807484, 25.074817911783953, 24.430214323820906, 25.201777693804615]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.152914937337243, 24.181059773763025, 23.647978719075525, 24.25101750691732]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.427850376374307, -1.542421691886479, -2.2625331674461697, -1.5697917918596165]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7340308912184241, -2.2947226772482168, -2.8813071809057647, -1.9806244213091873]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5755534022187387, -1.757521795107033, -2.5463722235613235, -1.6938162114992716]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0419336112420714, -2.5614492066721595, -3.108037998638444, -1.9832593534887824]}}