{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:19.402714", "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-15_to_2023-Jan-19_324.0_-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": 2023010000724}, "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 15 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 67476.66713847253}, "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": ["Atlantic Ocean", "Oceano Atl\u00e2ntico"]}, "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": 324.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "324.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 323.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 325.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.5}, "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": [[[[-36.68, -5.82], [-36.53, -5.47], [-36.18, -5.32], [-36.03, -4.97], [-35.5, -4.75], [-34.97, -4.97], [-34.82, -5.32], [-34.47, -5.47], [-34.25, -6.0], [-34.35, -6.25], [-34.25, -6.5], [-34.35, -6.75], [-34.25, -7.0], [-34.35, -7.25], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.97, -9.03], [-35.5, -9.25], [-35.75, -9.15], [-36.0, -9.25], [-36.53, -9.03], [-36.75, -8.5], [-36.65, -8.25], [-36.68, -8.18], [-36.75, -8.15], [-37.0, -8.25], [-37.53, -8.03], [-37.75, -7.5], [-37.53, -6.97], [-37.18, -6.82], [-37.15, -6.75], [-37.25, -6.5], [-37.03, -5.97], [-36.68, -5.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -7.0], [-37.14999999999998, -6.75], [-37.25, -6.5], [-37.02999999999997, -5.97], [-36.5, -5.75], [-35.97000000000003, -5.97], [-35.81999999999999, -6.32], [-35.75, -6.35], [-35.5, -6.25], [-34.97000000000003, -6.47], [-34.81999999999999, -6.82], [-34.47000000000003, -6.97], [-34.25, -7.5], [-34.35000000000002, -7.75], [-34.25, -8.0], [-34.47000000000003, -8.53], [-35.0, -8.75], [-35.25, -8.65], [-35.5, -8.75], [-36.02999999999997, -8.53], [-36.18000000000001, -8.18], [-36.25, -8.15], [-36.5, -8.25], [-37.02999999999997, -8.03], [-37.25, -7.5], [-37.14999999999998, -7.25], [-37.25, -7.0]]]]}, "2023-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.14999999999998, -6.75], [-37.25, -6.5], [-37.02999999999997, -5.97], [-36.5, -5.75], [-35.97000000000003, -5.97], [-35.81999999999999, -6.32], [-35.75, -6.35], [-35.5, -6.25], [-34.97000000000003, -6.47], [-34.81999999999999, -6.82], [-34.47000000000003, -6.97], [-34.25, -7.5], [-34.35000000000002, -7.75], [-34.25, -8.0], [-34.47000000000003, -8.53], [-34.81999999999999, -8.68], [-34.97000000000003, -9.03], [-35.5, -9.25], [-35.75, -9.15], [-36.0, -9.25], [-36.52999999999997, -9.03], [-36.75, -8.5], [-36.64999999999998, -8.25], [-36.68000000000001, -8.18], [-36.75, -8.15], [-37.0, -8.25], [-37.52999999999997, -8.03], [-37.75, -7.5], [-37.52999999999997, -6.97], [-37.18000000000001, -6.82], [-37.14999999999998, -6.75]]]]}, "2023-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.14999999999998, -6.75], [-37.25, -6.5], [-37.02999999999997, -5.97], [-36.68000000000001, -5.82], [-36.52999999999997, -5.47], [-36.18000000000001, -5.32], [-36.02999999999997, -4.97], [-35.5, -4.75], [-34.97000000000003, -4.97], [-34.81999999999999, -5.32], [-34.47000000000003, -5.47], [-34.25, -6.0], [-34.35000000000002, -6.25], [-34.25, -6.5], [-34.35000000000002, -6.75], [-34.25, -7.0], [-34.35000000000002, -7.25], [-34.25, -7.5], [-34.35000000000002, -7.75], [-34.25, -8.0], [-34.47000000000003, -8.53], [-34.81999999999999, -8.68], [-34.97000000000003, -9.03], [-35.5, -9.25], [-35.75, -9.15], [-36.0, -9.25], [-36.52999999999997, -9.03], [-36.75, -8.5], [-36.64999999999998, -8.25], [-36.68000000000001, -8.18], [-36.75, -8.15], [-37.0, -8.25], [-37.52999999999997, -8.03], [-37.75, -7.5], [-37.52999999999997, -6.97], [-37.18000000000001, -6.82], [-37.14999999999998, -6.75]]]]}, "2023-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.14999999999998, -6.75], [-37.25, -6.5], [-37.02999999999997, -5.97], [-36.68000000000001, -5.82], [-36.52999999999997, -5.47], [-36.18000000000001, -5.32], [-36.02999999999997, -4.97], [-35.5, -4.75], [-34.97000000000003, -4.97], [-34.81999999999999, -5.32], [-34.47000000000003, -5.47], [-34.25, -6.0], [-34.35000000000002, -6.25], [-34.25, -6.5], [-34.35000000000002, -6.75], [-34.25, -7.0], [-34.35000000000002, -7.25], [-34.25, -7.5], [-34.35000000000002, -7.75], [-34.25, -8.0], [-34.47000000000003, -8.53], [-34.81999999999999, -8.68], [-34.97000000000003, -9.03], [-35.5, -9.25], [-35.75, -9.15], [-36.0, -9.25], [-36.52999999999997, -9.03], [-36.75, -8.5], [-36.64999999999998, -8.25], [-36.68000000000001, -8.18], [-36.75, -8.15], [-37.0, -8.25], [-37.52999999999997, -8.03], [-37.75, -7.5], [-37.52999999999997, -6.97], [-37.18000000000001, -6.82], [-37.14999999999998, -6.75]]]]}, "2023-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.14999999999998, -6.75], [-37.25, -6.5], [-37.02999999999997, -5.97], [-36.68000000000001, -5.82], [-36.52999999999997, -5.47], [-36.18000000000001, -5.32], [-36.02999999999997, -4.97], [-35.5, -4.75], [-34.97000000000003, -4.97], [-34.81999999999999, -5.32], [-34.47000000000003, -5.47], [-34.25, -6.0], [-34.35000000000002, -6.25], [-34.25, -6.5], [-34.35000000000002, -6.75], [-34.25, -7.0], [-34.35000000000002, -7.25], [-34.25, -7.5], [-34.35000000000002, -7.75], [-34.25, -8.0], [-34.47000000000003, -8.53], [-34.81999999999999, -8.68], [-34.97000000000003, -9.03], [-35.5, -9.25], [-35.75, -9.15], [-36.0, -9.25], [-36.52999999999997, -9.03], [-36.75, -8.5], [-36.64999999999998, -8.25], [-36.68000000000001, -8.18], [-36.75, -8.15], [-37.0, -8.25], [-37.52999999999997, -8.03], [-37.75, -7.5], [-37.52999999999997, -6.97], [-37.18000000000001, -6.82], [-37.14999999999998, -6.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.6413107713406134}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.526224071349418}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.80182273565589, 24.732164112074145, 24.788651580130875, 24.084039830449797, 24.698346469471858]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.104214682765473, 22.81378822127391, 22.82442234208054, 22.051939688073844, 22.472059312106694]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3801113221298977, -1.1867101931508444, -1.3908307453390203, -2.069683915823235, -1.4006267250212365]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6650612820244532, -1.6183316574452533, -1.8976011183738137, -2.6413107713406134, -1.9016012069739645]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0381844922373977, -1.6480413016225834, -2.0157423736583833, -2.9706299295956895, -1.872276512118016]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4306291553170154, -2.0552820305606923, -2.7335259459871217, -4.110981820005059, -2.3647142730466646]}}