{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:20.960379", "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": "2021-Oct-22_to_2021-Oct-26_305.0_5.0"}, "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": 2021100000763}, "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 22 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 26 2021"}, "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": 77034.15541896595}, "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": ["Atlantic Ocean"]}, "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": 5.0}, "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": 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": 304.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.0}, "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": [[[[-55.25, 6.15], [-55.0, 6.25], [-54.75, 6.15], [-54.5, 6.25], [-54.0, 6.04], [-53.5, 6.25], [-52.97, 6.03], [-52.82, 5.68], [-52.75, 5.65], [-52.5, 5.75], [-51.97, 5.53], [-51.75, 5.0], [-51.97, 4.47], [-52.32, 4.32], [-52.35, 4.25], [-52.32, 4.18], [-51.97, 4.03], [-51.82, 3.68], [-51.47, 3.53], [-51.25, 3.0], [-51.47, 2.47], [-52.0, 2.25], [-52.25, 2.35], [-52.5, 2.25], [-53.03, 2.47], [-53.2, 2.88], [-53.5, 2.75], [-53.75, 2.85], [-54.0, 2.75], [-54.53, 2.97], [-54.68, 3.32], [-55.03, 3.47], [-55.18, 3.82], [-55.53, 3.97], [-55.68, 4.32], [-56.03, 4.47], [-56.25, 5.0], [-56.15, 5.25], [-56.25, 5.5], [-56.03, 6.03], [-55.5, 6.25], [-55.25, 6.15]]]]}}, "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": {"2021-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.02999999999997, 5.53], [-52.5, 5.75], [-51.97000000000003, 5.53], [-51.75, 5.0], [-51.97000000000003, 4.47], [-52.5, 4.25], [-53.02999999999997, 4.47], [-53.25, 5.0], [-53.02999999999997, 5.53]]]]}, "2021-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.25, 5.5], [-56.02999999999997, 6.03], [-55.5, 6.25], [-55.25, 6.15], [-55.0, 6.25], [-54.75, 6.15], [-54.5, 6.25], [-54.0, 6.04], [-53.5, 6.25], [-52.97000000000003, 6.03], [-52.81999999999999, 5.68], [-52.75, 5.65], [-52.5, 5.75], [-51.97000000000003, 5.53], [-51.75, 5.0], [-51.97000000000003, 4.47], [-52.31999999999999, 4.32], [-52.35000000000002, 4.25], [-52.31999999999999, 4.18], [-51.97000000000003, 4.03], [-51.81999999999999, 3.68], [-51.47000000000003, 3.53], [-51.25, 3.0], [-51.47000000000003, 2.47], [-52.0, 2.25], [-52.25, 2.35], [-52.5, 2.25], [-53.02999999999997, 2.47], [-53.19999999999999, 2.88], [-53.5, 2.75], [-53.75, 2.85], [-54.0, 2.75], [-54.52999999999997, 2.97], [-54.68000000000001, 3.32], [-55.02999999999997, 3.47], [-55.18000000000001, 3.82], [-55.52999999999997, 3.97], [-55.68000000000001, 4.32], [-56.02999999999997, 4.47], [-56.25, 5.0], [-56.14999999999998, 5.25], [-56.25, 5.5]]]]}, "2021-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.25, 5.5], [-56.02999999999997, 6.03], [-55.5, 6.25], [-55.25, 6.15], [-55.0, 6.25], [-54.75, 6.15], [-54.5, 6.25], [-54.0, 6.04], [-53.5, 6.25], [-52.97000000000003, 6.03], [-52.81999999999999, 5.68], [-52.75, 5.65], [-52.5, 5.75], [-51.97000000000003, 5.53], [-51.75, 5.0], [-51.97000000000003, 4.47], [-52.31999999999999, 4.32], [-52.35000000000002, 4.25], [-52.31999999999999, 4.18], [-51.97000000000003, 4.03], [-51.81999999999999, 3.68], [-51.47000000000003, 3.53], [-51.25, 3.0], [-51.47000000000003, 2.47], [-52.0, 2.25], [-52.25, 2.35], [-52.5, 2.25], [-53.02999999999997, 2.47], [-53.19999999999999, 2.88], [-53.5, 2.75], [-53.75, 2.85], [-54.0, 2.75], [-54.52999999999997, 2.97], [-54.68000000000001, 3.32], [-55.02999999999997, 3.47], [-55.18000000000001, 3.82], [-55.52999999999997, 3.97], [-55.68000000000001, 4.32], [-56.02999999999997, 4.47], [-56.25, 5.0], [-56.14999999999998, 5.25], [-56.25, 5.5]]]]}, "2021-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.25, 5.5], [-56.02999999999997, 6.03], [-55.5, 6.25], [-55.25, 6.15], [-55.0, 6.25], [-54.75, 6.15], [-54.5, 6.25], [-54.0, 6.04], [-53.5, 6.25], [-52.97000000000003, 6.03], [-52.81999999999999, 5.68], [-52.75, 5.65], [-52.5, 5.75], [-51.97000000000003, 5.53], [-51.75, 5.0], [-51.97000000000003, 4.47], [-52.31999999999999, 4.32], [-52.35000000000002, 4.25], [-52.31999999999999, 4.18], [-51.97000000000003, 4.03], [-51.81999999999999, 3.68], [-51.47000000000003, 3.53], [-51.25, 3.0], [-51.47000000000003, 2.47], [-52.0, 2.25], [-52.25, 2.35], [-52.5, 2.25], [-53.02999999999997, 2.47], [-53.19999999999999, 2.88], [-53.5, 2.75], [-53.75, 2.85], [-54.0, 2.75], [-54.52999999999997, 2.97], [-54.68000000000001, 3.32], [-55.02999999999997, 3.47], [-55.18000000000001, 3.82], [-55.52999999999997, 3.97], [-55.68000000000001, 4.32], [-56.02999999999997, 4.47], [-56.25, 5.0], [-56.14999999999998, 5.25], [-56.25, 5.5]]]]}, "2021-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.02999999999997, 4.97], [-56.25, 5.5], [-56.02999999999997, 6.03], [-55.5, 6.25], [-54.97000000000003, 6.03], [-54.81999999999999, 5.68], [-54.47000000000003, 5.53], [-54.25, 5.0], [-54.47000000000003, 4.47], [-55.0, 4.25], [-55.52999999999997, 4.47], [-55.68000000000001, 4.82], [-56.02999999999997, 4.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1040203634955787}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4450114023760032}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.42823735576593, 26.140566420515086, 25.88230839713077, 25.861945380175598, 26.765348201429447]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.42823735576593, 25.434722835313494, 25.32977358779766, 25.12740913781397, 26.601294370513813]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7971540555346337, -1.3054063179588706, -1.5428789829546714, -1.5447187403941576, -1.0443171485505616]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7971540555346337, -1.5881429933635332, -2.07140052732359, -2.1040203634955787, -1.0731948230427975]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3925350216952965, -1.7441083033989877, -2.056860202533571, -2.114577901583674, -1.455931786032263]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3925350216952965, -2.0910715654997247, -2.9739048911619137, -2.954945777341364, -1.569115981790831]}}