{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:41.671326", "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-Jan-06_to_2022-Jan-11_303.5_3.0"}, "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": 2022010000352}, "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 06 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 11 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 86432.27624646998}, "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", "Guyana", "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": 3.0}, "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": 303.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 301.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-59.53, 3.53], [-59.0, 3.75], [-58.75, 3.65], [-58.68, 3.68], [-58.53, 4.03], [-58.0, 4.25], [-57.75, 4.15], [-57.5, 4.25], [-57.25, 4.15], [-57.18, 4.18], [-57.03, 4.53], [-56.5, 4.75], [-56.25, 4.65], [-56.0, 4.75], [-55.47, 4.53], [-55.32, 4.18], [-55.0, 4.04], [-54.5, 4.25], [-53.97, 4.03], [-53.75, 3.5], [-53.85, 3.25], [-53.75, 3.0], [-53.97, 2.47], [-54.32, 2.32], [-54.47, 1.97], [-54.82, 1.82], [-54.97, 1.47], [-55.32, 1.32], [-55.47, 0.97], [-56.0, 0.75], [-56.53, 0.97], [-56.68, 1.32], [-57.03, 1.47], [-57.18, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.18, 2.32], [-58.25, 2.35], [-58.5, 2.25], [-58.75, 2.35], [-59.0, 2.25], [-59.53, 2.47], [-59.75, 3.0], [-59.53, 3.53]]]]}}, "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": {"2022-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.64999999999998, 3.25], [-57.75, 3.5], [-57.52999999999997, 4.03], [-57.18000000000001, 4.18], [-57.02999999999997, 4.53], [-56.5, 4.75], [-56.25, 4.65], [-56.0, 4.75], [-55.47000000000003, 4.53], [-55.31999999999999, 4.18], [-54.97000000000003, 4.03], [-54.75, 3.5], [-54.85000000000002, 3.25], [-54.75, 3.0], [-54.97000000000003, 2.47], [-55.5, 2.25], [-55.75, 2.35], [-55.81999999999999, 2.32], [-55.97000000000003, 1.97], [-56.5, 1.75], [-56.75, 1.85], [-57.0, 1.75], [-57.25, 1.85], [-57.5, 1.75], [-58.02999999999997, 1.97], [-58.25, 2.5], [-58.02999999999997, 3.03], [-57.68000000000001, 3.18], [-57.64999999999998, 3.25]]]]}, "2022-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.64999999999998, 3.25], [-57.75, 3.5], [-57.52999999999997, 4.03], [-57.18000000000001, 4.18], [-57.02999999999997, 4.53], [-56.5, 4.75], [-56.25, 4.65], [-56.0, 4.75], [-55.47000000000003, 4.53], [-55.31999999999999, 4.18], [-55.0, 4.04], [-54.5, 4.25], [-53.97000000000003, 4.03], [-53.75, 3.5], [-53.85000000000002, 3.25], [-53.75, 3.0], [-53.97000000000003, 2.47], [-54.31999999999999, 2.32], [-54.47000000000003, 1.97], [-54.81999999999999, 1.82], [-54.97000000000003, 1.47], [-55.31999999999999, 1.32], [-55.47000000000003, 0.97], [-56.0, 0.75], [-56.52999999999997, 0.97], [-56.68000000000001, 1.32], [-57.02999999999997, 1.47], [-57.18000000000001, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.02999999999997, 1.97], [-58.25, 2.5], [-58.02999999999997, 3.03], [-57.68000000000001, 3.18], [-57.64999999999998, 3.25]]]]}, "2022-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.0, 2.25], [-59.52999999999997, 2.47], [-59.75, 3.0], [-59.52999999999997, 3.53], [-59.0, 3.75], [-58.75, 3.65], [-58.68000000000001, 3.68], [-58.52999999999997, 4.03], [-58.0, 4.25], [-57.75, 4.15], [-57.5, 4.25], [-57.25, 4.15], [-57.18000000000001, 4.18], [-57.02999999999997, 4.53], [-56.5, 4.75], [-56.25, 4.65], [-56.0, 4.75], [-55.47000000000003, 4.53], [-55.31999999999999, 4.18], [-55.0, 4.04], [-54.5, 4.25], [-53.97000000000003, 4.03], [-53.75, 3.5], [-53.85000000000002, 3.25], [-53.75, 3.0], [-53.97000000000003, 2.47], [-54.31999999999999, 2.32], [-54.47000000000003, 1.97], [-54.81999999999999, 1.82], [-54.97000000000003, 1.47], [-55.31999999999999, 1.32], [-55.47000000000003, 0.97], [-56.0, 0.75], [-56.52999999999997, 0.97], [-56.68000000000001, 1.32], [-57.02999999999997, 1.47], [-57.18000000000001, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.02999999999997, 1.97], [-58.18000000000001, 2.32], [-58.25, 2.35], [-58.5, 2.25], [-58.75, 2.35], [-59.0, 2.25]]]]}, "2022-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.0, 2.25], [-59.52999999999997, 2.47], [-59.75, 3.0], [-59.52999999999997, 3.53], [-59.0, 3.75], [-58.75, 3.65], [-58.68000000000001, 3.68], [-58.52999999999997, 4.03], [-58.0, 4.25], [-57.75, 4.15], [-57.5, 4.25], [-57.25, 4.15], [-57.0, 4.25], [-56.75, 4.15], [-56.68000000000001, 4.18], [-56.52999999999997, 4.53], [-56.0, 4.75], [-55.47000000000003, 4.53], [-55.31999999999999, 4.18], [-55.0, 4.04], [-54.5, 4.25], [-53.97000000000003, 4.03], [-53.75, 3.5], [-53.85000000000002, 3.25], [-53.75, 3.0], [-53.97000000000003, 2.47], [-54.31999999999999, 2.32], [-54.47000000000003, 1.97], [-54.81999999999999, 1.82], [-54.97000000000003, 1.47], [-55.31999999999999, 1.32], [-55.47000000000003, 0.97], [-56.0, 0.75], [-56.52999999999997, 0.97], [-56.68000000000001, 1.32], [-57.02999999999997, 1.47], [-57.18000000000001, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.02999999999997, 1.97], [-58.18000000000001, 2.32], [-58.25, 2.35], [-58.5, 2.25], [-58.75, 2.35], [-59.0, 2.25]]]]}, "2022-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.0, 2.25], [-59.52999999999997, 2.47], [-59.75, 3.0], [-59.52999999999997, 3.53], [-59.0, 3.75], [-58.75, 3.65], [-58.68000000000001, 3.68], [-58.52999999999997, 4.03], [-58.0, 4.25], [-57.75, 4.15], [-57.5, 4.25], [-57.25, 4.15], [-57.0, 4.25], [-56.47000000000003, 4.03], [-56.25, 3.5], [-56.45999999999998, 3.0], [-56.25, 2.5], [-56.47000000000003, 1.97], [-57.0, 1.75], [-57.25, 1.85], [-57.5, 1.75], [-58.02999999999997, 1.97], [-58.18000000000001, 2.32], [-58.25, 2.35], [-58.5, 2.25], [-58.75, 2.35], [-59.0, 2.25]]]]}, "2022-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.0, 2.25], [-59.52999999999997, 2.47], [-59.75, 3.0], [-59.52999999999997, 3.53], [-59.0, 3.75], [-58.75, 3.65], [-58.5, 3.75], [-58.25, 3.65], [-58.0, 3.75], [-57.47000000000003, 3.53], [-57.25, 3.0], [-57.47000000000003, 2.47], [-58.0, 2.25], [-58.25, 2.35], [-58.5, 2.25], [-58.75, 2.35], [-59.0, 2.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.512554257388956}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.375367790481867}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.85113767341221, 23.457162005571092, 23.671160014344025, 23.759427130044685, 24.442048840733435, 24.42288753836209]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.32152298245137, 22.420640611037584, 22.400380074817065, 22.78926040046906, 23.886107556999548, 23.96288075946751]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2659963424928877, -1.5591209014748726, -1.457946094642868, -1.3559915557116762, -1.0231306845225339, -0.9621545097924505]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.681849036366657, -1.9766534465546215, -2.512554257388956, -1.8959534587605162, -1.1448332276638098, -1.000251102702748]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7347335358090012, -1.9866549705198173, -1.8207111741805633, -1.648699131032508, -1.3353407080824802, -1.3374968821778006]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.277369225846012, -2.6312664283392326, -2.7645972666060006, -2.0482191845155, -1.5209529527468018, -1.4302012896134981]}}