{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:38.401858", "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-Apr-19_to_2022-Apr-23_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": 2022040000626}, "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": "April 19 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 23 2022"}, "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": 86211.68976813731}, "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": ["French Guiana", "Suriname"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": ["North 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": 303.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.75, 5.0], [-55.53, 5.53], [-55.18, 5.68], [-55.03, 6.03], [-54.5, 6.25], [-54.25, 6.15], [-54.0, 6.25], [-53.47, 6.03], [-53.32, 5.68], [-53.25, 5.65], [-53.0, 5.75], [-52.75, 5.65], [-52.5, 5.75], [-51.97, 5.53], [-51.75, 5.0], [-51.97, 4.47], [-52.32, 4.32], [-52.47, 3.97], [-53.0, 3.75], [-53.25, 3.85], [-53.32, 3.82], [-53.47, 3.47], [-54.0, 3.25], [-54.5, 3.46], [-55.0, 3.25], [-55.25, 3.35], [-55.5, 3.25], [-56.03, 3.47], [-56.25, 4.0], [-56.03, 4.53], [-55.68, 4.68], [-55.65, 4.75], [-55.75, 5.0]]]]}, "2022-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, 5.03], [-56.0, 5.25], [-55.75, 5.15], [-55.68, 5.18], [-55.53, 5.53], [-55.18, 5.68], [-55.03, 6.03], [-54.5, 6.25], [-54.25, 6.15], [-54.0, 6.25], [-53.47, 6.03], [-53.32, 5.68], [-53.25, 5.65], [-53.0, 5.75], [-52.75, 5.65], [-52.5, 5.75], [-51.97, 5.53], [-51.75, 5.0], [-51.97, 4.47], [-52.32, 4.32], [-52.47, 3.97], [-53.0, 3.75], [-53.25, 3.85], [-53.32, 3.82], [-53.47, 3.47], [-54.0, 3.25], [-54.25, 3.35], [-54.5, 3.25], [-54.75, 3.35], [-55.0, 3.25], [-55.25, 3.35], [-55.5, 3.25], [-55.75, 3.35], [-56.0, 3.25], [-56.53, 3.47], [-56.75, 4.0], [-56.65, 4.25], [-56.75, 4.5], [-56.53, 5.03]]]]}, "2022-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, 5.03], [-56.12, 5.2], [-56.25, 5.5], [-56.03, 6.03], [-55.5, 6.25], [-55.25, 6.15], [-55.0, 6.25], [-54.75, 6.15], [-54.5, 6.25], [-54.25, 6.15], [-54.0, 6.25], [-53.47, 6.03], [-53.32, 5.68], [-53.25, 5.65], [-53.0, 5.75], [-52.75, 5.65], [-52.68, 5.68], [-52.65, 5.75], [-52.75, 6.0], [-52.65, 6.25], [-52.68, 6.32], [-53.03, 6.47], [-53.25, 7.0], [-53.03, 7.53], [-52.5, 7.75], [-52.25, 7.65], [-52.0, 7.75], [-51.47, 7.53], [-51.25, 7.0], [-51.35, 6.75], [-51.25, 6.5], [-51.35, 6.25], [-51.25, 6.0], [-51.35, 5.75], [-51.25, 5.5], [-51.47, 4.97], [-51.82, 4.82], [-51.85, 4.75], [-51.75, 4.5], [-51.97, 3.97], [-52.5, 3.75], [-52.75, 3.85], [-53.0, 3.75], [-53.25, 3.85], [-53.32, 3.82], [-53.47, 3.47], [-54.0, 3.25], [-54.25, 3.35], [-54.5, 3.25], [-54.75, 3.35], [-55.0, 3.25], [-55.25, 3.35], [-55.5, 3.25], [-55.75, 3.35], [-56.0, 3.25], [-56.53, 3.47], [-56.75, 4.0], [-56.65, 4.25], [-56.75, 4.5], [-56.53, 5.03]]]]}, "2022-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, 5.03], [-56.12, 5.2], [-56.25, 5.5], [-56.03, 6.03], [-55.5, 6.25], [-55.25, 6.15], [-55.0, 6.25], [-54.75, 6.15], [-54.5, 6.25], [-54.25, 6.15], [-54.0, 6.25], [-53.47, 6.03], [-53.32, 5.68], [-53.25, 5.65], [-53.0, 5.75], [-52.75, 5.65], [-52.68, 5.68], [-52.65, 5.75], [-52.75, 6.0], [-52.65, 6.25], [-52.68, 6.32], [-53.03, 6.47], [-53.25, 7.0], [-53.03, 7.53], [-52.5, 7.75], [-52.25, 7.65], [-52.0, 7.75], [-51.47, 7.53], [-51.25, 7.0], [-51.35, 6.75], [-51.25, 6.5], [-51.35, 6.25], [-51.25, 6.0], [-51.35, 5.75], [-51.25, 5.5], [-51.47, 4.97], [-51.82, 4.82], [-51.85, 4.75], [-51.75, 4.5], [-51.97, 3.97], [-52.5, 3.75], [-52.75, 3.85], [-53.0, 3.75], [-53.25, 3.85], [-53.32, 3.82], [-53.47, 3.47], [-54.0, 3.25], [-54.25, 3.35], [-54.5, 3.25], [-54.75, 3.35], [-55.0, 3.25], [-55.25, 3.35], [-55.5, 3.25], [-55.75, 3.35], [-56.0, 3.25], [-56.53, 3.47], [-56.75, 4.0], [-56.65, 4.25], [-56.75, 4.5], [-56.53, 5.03]]]]}, "2022-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.03, 6.03], [-55.5, 6.25], [-55.25, 6.15], [-55.0, 6.25], [-54.75, 6.15], [-54.5, 6.25], [-53.97, 6.03], [-53.75, 5.5], [-53.97, 4.97], [-54.32, 4.82], [-54.47, 4.47], [-55.0, 4.25], [-55.53, 4.47], [-55.68, 4.82], [-56.03, 4.97], [-56.25, 5.5], [-56.03, 6.03]]], [[[-52.68, 5.68], [-52.65, 5.75], [-52.75, 6.0], [-52.65, 6.25], [-52.68, 6.32], [-53.03, 6.47], [-53.25, 7.0], [-53.03, 7.53], [-52.5, 7.75], [-52.25, 7.65], [-52.0, 7.75], [-51.47, 7.53], [-51.25, 7.0], [-51.35, 6.75], [-51.25, 6.5], [-51.35, 6.25], [-51.25, 6.0], [-51.35, 5.75], [-51.25, 5.5], [-51.47, 4.97], [-51.82, 4.82], [-51.85, 4.75], [-51.75, 4.5], [-51.97, 3.97], [-52.5, 3.75], [-53.03, 3.97], [-53.25, 4.5], [-53.15, 4.75], [-53.25, 5.0], [-53.03, 5.53], [-52.68, 5.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.690359750546861}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4757225506104883}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.591958477450248, 24.679848881415978, 24.093591925479075, 24.364643783972554, 25.406541219459882]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.10904923680988, 24.363337377688083, 23.08859223387168, 23.71997070635763, 24.559298320341384]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2251423036289815, -1.1446073634715532, -1.9030246603842451, -1.6346708707779953, -0.9499567011675264]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6114896166184849, -1.3195347851043948, -2.690359750546861, -2.1195797368254716, -1.3384664855568644]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6800429574465303, -1.534871269104375, -2.615234575057752, -2.334935819646637, -1.561129895221947]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0736443518294574, -1.7514931529247144, -3.3765867926477555, -2.9240696846881358, -1.8853820283180525]}}