{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:40.487174", "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-02_to_2022-Jan-06_295.0_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": 2022010000204}, "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 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 06 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": 55400.30708683441}, "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", "Venezuela, Bolivarian Republic of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 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": 295.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 293.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-66.25, 7.15], [-66.0, 7.25], [-65.75, 7.15], [-65.5, 7.25], [-64.97, 7.03], [-64.75, 6.5], [-64.85, 6.25], [-64.82, 6.18], [-64.5, 6.04], [-64.0, 6.25], [-63.47, 6.03], [-63.25, 5.5], [-63.35, 5.25], [-63.25, 5.0], [-63.35, 4.75], [-63.25, 4.5], [-63.35, 4.25], [-63.25, 4.0], [-63.47, 3.47], [-64.0, 3.25], [-64.25, 3.35], [-64.5, 3.25], [-65.03, 3.47], [-65.18, 3.82], [-65.25, 3.85], [-65.5, 3.75], [-66.03, 3.97], [-66.25, 4.5], [-66.15, 4.75], [-66.25, 5.0], [-66.12, 5.3], [-66.13, 5.3], [-66.25, 5.35], [-66.5, 5.25], [-67.03, 5.47], [-67.25, 6.0], [-67.15, 6.25], [-67.25, 6.5], [-67.03, 7.03], [-66.5, 7.25], [-66.25, 7.15]]]]}}, "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": {"2022-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.0, 4.25], [-65.52999999999997, 4.47], [-65.75, 5.0], [-65.52999999999997, 5.53], [-65.0, 5.75], [-64.75, 5.65], [-64.5, 5.75], [-63.97000000000003, 5.53], [-63.75, 5.0], [-63.97000000000003, 4.47], [-64.5, 4.25], [-64.75, 4.35], [-65.0, 4.25]]]]}, "2022-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.25, 6.5], [-67.02999999999997, 7.03], [-66.5, 7.25], [-66.25, 7.15], [-66.0, 7.25], [-65.75, 7.15], [-65.5, 7.25], [-64.97000000000003, 7.03], [-64.75, 6.5], [-64.85000000000002, 6.25], [-64.82, 6.18], [-64.5, 6.04], [-64.0, 6.25], [-63.47000000000003, 6.03], [-63.25, 5.5], [-63.35000000000002, 5.25], [-63.25, 5.0], [-63.35000000000002, 4.75], [-63.25, 4.5], [-63.35000000000002, 4.25], [-63.25, 4.0], [-63.47000000000003, 3.47], [-64.0, 3.25], [-64.25, 3.35], [-64.5, 3.25], [-65.02999999999997, 3.47], [-65.18, 3.82], [-65.25, 3.85], [-65.5, 3.75], [-66.02999999999997, 3.97], [-66.25, 4.5], [-66.14999999999998, 4.75], [-66.25, 5.0], [-66.12, 5.3], [-66.25, 5.35], [-66.5, 5.25], [-67.02999999999997, 5.47], [-67.25, 6.0], [-67.14999999999998, 6.25], [-67.25, 6.5]]]]}, "2022-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.25, 6.5], [-67.02999999999997, 7.03], [-66.5, 7.25], [-66.25, 7.15], [-66.0, 7.25], [-65.75, 7.15], [-65.5, 7.25], [-64.97000000000003, 7.03], [-64.75, 6.5], [-64.85000000000002, 6.25], [-64.82, 6.18], [-64.5, 6.04], [-64.0, 6.25], [-63.47000000000003, 6.03], [-63.25, 5.5], [-63.35000000000002, 5.25], [-63.25, 5.0], [-63.35000000000002, 4.75], [-63.25, 4.5], [-63.35000000000002, 4.25], [-63.25, 4.0], [-63.47000000000003, 3.47], [-64.0, 3.25], [-64.25, 3.35], [-64.5, 3.25], [-65.02999999999997, 3.47], [-65.18, 3.82], [-65.25, 3.85], [-65.5, 3.75], [-66.02999999999997, 3.97], [-66.25, 4.5], [-66.14999999999998, 4.75], [-66.25, 5.0], [-66.12, 5.3], [-66.25, 5.35], [-66.5, 5.25], [-67.02999999999997, 5.47], [-67.25, 6.0], [-67.14999999999998, 6.25], [-67.25, 6.5]]]]}, "2022-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.25, 6.5], [-67.02999999999997, 7.03], [-66.5, 7.25], [-66.25, 7.15], [-66.0, 7.25], [-65.75, 7.15], [-65.5, 7.25], [-64.97000000000003, 7.03], [-64.75, 6.5], [-64.85000000000002, 6.25], [-64.82, 6.18], [-64.5, 6.04], [-64.0, 6.25], [-63.47000000000003, 6.03], [-63.25, 5.5], [-63.35000000000002, 5.25], [-63.25, 5.0], [-63.35000000000002, 4.75], [-63.25, 4.5], [-63.35000000000002, 4.25], [-63.25, 4.0], [-63.47000000000003, 3.47], [-64.0, 3.25], [-64.25, 3.35], [-64.5, 3.25], [-65.02999999999997, 3.47], [-65.18, 3.82], [-65.25, 3.85], [-65.5, 3.75], [-66.02999999999997, 3.97], [-66.25, 4.5], [-66.14999999999998, 4.75], [-66.25, 5.0], [-66.12, 5.3], [-66.25, 5.35], [-66.5, 5.25], [-67.02999999999997, 5.47], [-67.25, 6.0], [-67.14999999999998, 6.25], [-67.25, 6.5]]]]}, "2022-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.02999999999997, 5.97], [-67.25, 6.5], [-67.02999999999997, 7.03], [-66.5, 7.25], [-66.25, 7.15], [-66.0, 7.25], [-65.75, 7.15], [-65.5, 7.25], [-64.97000000000003, 7.03], [-64.75, 6.5], [-64.85000000000002, 6.25], [-64.82, 6.18], [-64.47000000000003, 6.03], [-64.32, 5.68], [-63.97000000000003, 5.53], [-63.75, 5.0], [-63.85000000000002, 4.75], [-63.75, 4.5], [-63.97000000000003, 3.97], [-64.5, 3.75], [-65.02999999999997, 3.97], [-65.18, 4.32], [-65.52999999999997, 4.47], [-65.75, 5.0], [-65.64999999999998, 5.25], [-65.68, 5.32], [-65.75, 5.35], [-66.0, 5.25], [-66.52999999999997, 5.47], [-66.68, 5.82], [-67.02999999999997, 5.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.9067621544567146}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2324198357750866}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.157643505300143, 21.458024212592818, 21.468786916616352, 21.434695609293158, 21.32010424501317]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.706016502255977, 19.69515804292928, 19.487131801467115, 19.366517238013387, 19.93794567262279]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.780125301336966, -1.2038993678276375, -1.2420586568284289, -1.287359405563895, -1.2608138865274883]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8527567436412369, -1.797473222500912, -1.5970861711384146, -1.7157484571262103, -1.9067621544567146]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.357785001988281, -1.7673638917836472, -1.707477964504037, -1.6752744530091976, -1.5525184421302045]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4266937433245515, -2.4729094001112495, -2.2953833457596065, -2.2781428690605163, -2.3893530600922914]}}