{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:25.818866", "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-Feb-11_to_2025-Feb-14_291.5_-6.5"}, "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": 2025020000299}, "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": "February 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 14 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": 64507.60797302078}, "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": -6.5}, "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": 291.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 293.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-69.18, -4.82], [-69.03, -4.47], [-68.5, -4.25], [-67.97, -4.47], [-67.8, -4.88], [-67.5, -4.75], [-67.25, -4.85], [-67.0, -4.75], [-66.75, -4.85], [-66.5, -4.75], [-65.97, -4.97], [-65.75, -5.5], [-65.97, -6.03], [-66.32, -6.18], [-66.35, -6.25], [-66.25, -6.5], [-66.35, -6.75], [-66.32, -6.82], [-65.97, -6.97], [-65.75, -7.5], [-65.97, -8.03], [-66.5, -8.25], [-66.75, -8.15], [-67.0, -8.25], [-67.25, -8.15], [-67.5, -8.25], [-67.75, -8.15], [-68.0, -8.25], [-68.53, -8.03], [-68.75, -7.5], [-68.65, -7.25], [-68.68, -7.18], [-69.03, -7.03], [-69.25, -6.5], [-69.15, -6.25], [-69.18, -6.18], [-69.53, -6.03], [-69.75, -5.5], [-69.53, -4.97], [-69.18, -4.82]]]]}}, "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": {"2025-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.52999999999997, -6.03], [-69.75, -5.5], [-69.52999999999997, -4.97], [-69.18, -4.82], [-69.02999999999997, -4.47], [-68.5, -4.25], [-67.97000000000003, -4.47], [-67.80000000000001, -4.88], [-67.5, -4.75], [-67.25, -4.85], [-67.0, -4.75], [-66.47000000000003, -4.97], [-66.25, -5.5], [-66.35000000000002, -5.75], [-66.25, -6.0], [-66.35000000000002, -6.25], [-66.25, -6.5], [-66.35000000000002, -6.75], [-66.32, -6.82], [-65.97000000000003, -6.97], [-65.75, -7.5], [-65.97000000000003, -8.03], [-66.5, -8.25], [-66.75, -8.15], [-67.0, -8.25], [-67.25, -8.15], [-67.5, -8.25], [-67.75, -8.15], [-68.0, -8.25], [-68.52999999999997, -8.03], [-68.75, -7.5], [-68.64999999999998, -7.25], [-68.68, -7.18], [-69.02999999999997, -7.03], [-69.25, -6.5], [-69.14999999999998, -6.25], [-69.18, -6.18], [-69.52999999999997, -6.03]]]]}, "2025-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.52999999999997, -6.03], [-69.75, -5.5], [-69.52999999999997, -4.97], [-69.18, -4.82], [-69.02999999999997, -4.47], [-68.5, -4.25], [-67.97000000000003, -4.47], [-67.80000000000001, -4.88], [-67.5, -4.75], [-67.25, -4.85], [-67.0, -4.75], [-66.75, -4.85], [-66.5, -4.75], [-65.97000000000003, -4.97], [-65.75, -5.5], [-65.97000000000003, -6.03], [-66.32, -6.18], [-66.35000000000002, -6.25], [-66.25, -6.5], [-66.35000000000002, -6.75], [-66.32, -6.82], [-65.97000000000003, -6.97], [-65.75, -7.5], [-65.97000000000003, -8.03], [-66.5, -8.25], [-66.75, -8.15], [-67.0, -8.25], [-67.25, -8.15], [-67.5, -8.25], [-67.75, -8.15], [-68.0, -8.25], [-68.52999999999997, -8.03], [-68.75, -7.5], [-68.64999999999998, -7.25], [-68.68, -7.18], [-69.02999999999997, -7.03], [-69.25, -6.5], [-69.14999999999998, -6.25], [-69.18, -6.18], [-69.52999999999997, -6.03]]]]}, "2025-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.52999999999997, -6.03], [-69.75, -5.5], [-69.52999999999997, -4.97], [-69.18, -4.82], [-69.02999999999997, -4.47], [-68.5, -4.25], [-67.97000000000003, -4.47], [-67.80000000000001, -4.88], [-67.5, -4.75], [-67.25, -4.85], [-67.0, -4.75], [-66.75, -4.85], [-66.5, -4.75], [-65.97000000000003, -4.97], [-65.75, -5.5], [-65.97000000000003, -6.03], [-66.32, -6.18], [-66.35000000000002, -6.25], [-66.25, -6.5], [-66.35000000000002, -6.75], [-66.32, -6.82], [-65.97000000000003, -6.97], [-65.75, -7.5], [-65.97000000000003, -8.03], [-66.5, -8.25], [-66.75, -8.15], [-67.0, -8.25], [-67.25, -8.15], [-67.5, -8.25], [-67.75, -8.15], [-68.0, -8.25], [-68.52999999999997, -8.03], [-68.75, -7.5], [-68.64999999999998, -7.25], [-68.68, -7.18], [-69.02999999999997, -7.03], [-69.25, -6.5], [-69.14999999999998, -6.25], [-69.18, -6.18], [-69.52999999999997, -6.03]]]]}, "2025-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.52999999999997, -6.03], [-69.75, -5.5], [-69.52999999999997, -4.97], [-69.18, -4.82], [-69.02999999999997, -4.47], [-68.5, -4.25], [-67.97000000000003, -4.47], [-67.80000000000001, -4.88], [-67.5, -4.75], [-67.25, -4.85], [-67.0, -4.75], [-66.75, -4.85], [-66.5, -4.75], [-65.97000000000003, -4.97], [-65.75, -5.5], [-65.97000000000003, -6.03], [-66.32, -6.18], [-66.35000000000002, -6.25], [-66.25, -6.5], [-66.35000000000002, -6.75], [-66.25, -7.0], [-66.47000000000003, -7.53], [-67.0, -7.75], [-67.25, -7.65], [-67.5, -7.75], [-67.75, -7.65], [-68.0, -7.75], [-68.52999999999997, -7.53], [-68.68, -7.18], [-69.02999999999997, -7.03], [-69.25, -6.5], [-69.14999999999998, -6.25], [-69.18, -6.18], [-69.52999999999997, -6.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.0597306866409895}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3951385100897247}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.345280710856116, 24.477819787888336, 24.164144982232017, 24.18534390318632]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.98141759236654, 24.256093597412132, 23.542834218343103, 23.806868489583337]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3459118234761973, -1.201058668058281, -1.5258588624417857, -1.5313198639448762]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.579609499559524, -1.4322236064896288, -2.0597306866409895, -1.881617900077913]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5753486233512095, -1.3718812776680724, -1.734151286858383, -1.7238444919514246]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9284743962220248, -1.5693681586402917, -2.2595746138491086, -2.0645203122138205]}}