{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:30.849185", "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-Oct-09_to_2022-Oct-15_305.0_3.5"}, "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": 2022100000445}, "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": "October 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 15 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 55513.163048431656}, "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", "French Guiana", "Suriname"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 3.5}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.5}, "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": [[[[-56.03, 5.03], [-55.68, 5.18], [-55.53, 5.53], [-55.0, 5.75], [-54.47, 5.53], [-54.32, 5.18], [-54.25, 5.15], [-54.0, 5.25], [-53.47, 5.03], [-53.25, 4.5], [-53.35, 4.25], [-53.25, 4.0], [-53.47, 3.47], [-53.82, 3.32], [-53.85, 3.25], [-53.75, 3.0], [-53.97, 2.47], [-54.32, 2.32], [-54.47, 1.97], [-55.0, 1.75], [-55.53, 1.97], [-55.68, 2.32], [-56.03, 2.47], [-56.18, 2.82], [-56.53, 2.97], [-56.75, 3.5], [-56.65, 3.75], [-56.75, 4.0], [-56.53, 4.53], [-56.18, 4.68], [-56.03, 5.03]]]]}}, "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": {"2022-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.52999999999997, 5.03], [-54.0, 5.25], [-53.47000000000003, 5.03], [-53.25, 4.5], [-53.47000000000003, 3.97], [-54.0, 3.75], [-54.52999999999997, 3.97], [-54.75, 4.5], [-54.52999999999997, 5.03]]]]}, "2022-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.0, 2.75], [-56.52999999999997, 2.97], [-56.75, 3.5], [-56.52999999999997, 4.03], [-56.0, 4.25], [-55.5, 4.04], [-55.0, 4.25], [-54.56999999999999, 4.07], [-54.75, 4.5], [-54.52999999999997, 5.03], [-54.0, 5.25], [-53.47000000000003, 5.03], [-53.25, 4.5], [-53.47000000000003, 3.97], [-54.0, 3.75], [-54.43000000000001, 3.93], [-54.25, 3.5], [-54.47000000000003, 2.97], [-55.0, 2.75], [-55.5, 2.96], [-56.0, 2.75]]]]}, "2022-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.0, 2.75], [-56.52999999999997, 2.97], [-56.75, 3.5], [-56.52999999999997, 4.03], [-56.0, 4.25], [-55.5, 4.04], [-55.18000000000001, 4.18], [-55.02999999999997, 4.53], [-54.68000000000001, 4.68], [-54.52999999999997, 5.03], [-54.0, 5.25], [-53.47000000000003, 5.03], [-53.25, 4.5], [-53.35000000000002, 4.25], [-53.25, 4.0], [-53.47000000000003, 3.47], [-54.0, 3.25], [-54.25, 3.35], [-54.31999999999999, 3.32], [-54.47000000000003, 2.97], [-55.0, 2.75], [-55.5, 2.96], [-56.0, 2.75]]]]}, "2022-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, 4.0], [-56.52999999999997, 4.53], [-56.18000000000001, 4.68], [-56.02999999999997, 5.03], [-55.68000000000001, 5.18], [-55.52999999999997, 5.53], [-55.0, 5.75], [-54.47000000000003, 5.53], [-54.31999999999999, 5.18], [-54.25, 5.15], [-54.0, 5.25], [-53.47000000000003, 5.03], [-53.25, 4.5], [-53.35000000000002, 4.25], [-53.25, 4.0], [-53.47000000000003, 3.47], [-53.870000000000005, 3.3], [-53.75, 3.0], [-53.97000000000003, 2.47], [-54.31999999999999, 2.32], [-54.47000000000003, 1.97], [-55.0, 1.75], [-55.52999999999997, 1.97], [-55.68000000000001, 2.32], [-56.02999999999997, 2.47], [-56.18000000000001, 2.82], [-56.52999999999997, 2.97], [-56.75, 3.5], [-56.64999999999998, 3.75], [-56.75, 4.0]]]]}, "2022-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, 4.0], [-56.52999999999997, 4.53], [-56.18000000000001, 4.68], [-56.02999999999997, 5.03], [-55.68000000000001, 5.18], 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[-56.18000000000001, 2.82], [-56.52999999999997, 2.97], [-56.75, 3.5], [-56.64999999999998, 3.75], [-56.75, 4.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.956861324607928}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9002869638773896}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.35264553839437, 25.87959427029216, 26.125696332753762, 25.828731776032328, 25.233303455115504, 25.573970217362614, 26.074848908591207]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.35264553839437, 25.235817351932155, 25.32813979073154, 24.8914303598321, 24.39086963696701, 24.73798985916318, 25.161184985698867]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1310276571196027, -1.4966473307916697, -1.43146427312696, -1.7323928312680972, -2.3650972840370628, -2.022269880151899, -1.6399957068242963]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1310276571196027, -1.7715144179588265, -1.6868144133323995, -2.121719266906325, -2.956861324607928, -2.3749859045209405, -2.0260724402173196]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3960735925444183, -1.5323671472149683, -1.5840391755211822, -1.839444763762609, -2.5161320894904926, -2.1335144915699598, -1.669746790629606]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3960735925444183, -1.6543628845550433, -1.8935851428683546, -2.5403404389027777, -2.9951086056596505, -2.636325558232994, -2.052266641192978]}}