{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:43.755440", "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-Jul-30_to_2022-Aug-01_308.0_-2.5"}, "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": 2022070001288}, "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": "July 30 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 01 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 58685.99655505647}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -2.5}, "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": 308.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 307.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 310.5}, "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": -1.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-53.0, -0.75], [-52.75, -0.85], [-52.5, -0.75], [-51.97, -0.97], [-51.82, -1.32], [-51.75, -1.35], [-51.68, -1.32], [-51.53, -0.97], [-51.0, -0.75], [-50.75, -0.85], [-50.68, -0.82], [-50.53, -0.47], [-50.0, -0.25], [-49.47, -0.47], [-49.25, -1.0], [-49.47, -1.53], [-49.82, -1.68], [-49.87, -1.8], [-49.75, -1.85], [-49.5, -1.75], [-48.97, -1.97], [-48.75, -2.5], [-48.97, -3.03], [-49.5, -3.25], [-49.75, -3.15], [-49.82, -3.18], [-49.97, -3.53], [-50.5, -3.75], [-50.75, -3.65], [-51.0, -3.75], [-51.25, -3.65], [-51.5, -3.75], [-52.03, -3.53], [-52.18, -3.18], [-52.53, -3.03], [-52.68, -2.68], [-52.75, -2.65], [-53.0, -2.75], [-53.53, -2.53], [-53.75, -2.0], [-53.65, -1.75], [-53.75, -1.5], [-53.53, -0.97], [-53.0, -0.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.75, -1.5], [-53.52999999999997, -0.97], [-53.0, -0.75], [-52.75, -0.85], [-52.5, -0.75], [-51.97000000000003, -0.97], [-51.81999999999999, -1.32], [-51.75, -1.35], [-51.68000000000001, -1.32], [-51.52999999999997, -0.97], [-51.0, -0.75], [-50.75, -0.85], [-50.68000000000001, -0.82], [-50.52999999999997, -0.47], [-50.0, -0.25], [-49.47000000000003, -0.47], [-49.25, -1.0], [-49.47000000000003, -1.53], [-49.81999999999999, -1.68], [-49.870000000000005, -1.8], [-49.75, -1.85], [-49.5, -1.75], [-48.97000000000003, -1.97], [-48.75, -2.5], [-48.97000000000003, -3.03], [-49.5, -3.25], [-49.75, -3.15], [-49.81999999999999, -3.18], [-49.97000000000003, -3.53], [-50.5, -3.75], [-50.75, -3.65], [-51.0, -3.75], [-51.25, -3.65], [-51.5, -3.75], [-52.02999999999997, -3.53], [-52.18000000000001, -3.18], [-52.52999999999997, -3.03], [-52.68000000000001, -2.68], [-52.75, -2.65], [-53.0, -2.75], [-53.52999999999997, -2.53], [-53.75, -2.0], [-53.64999999999998, -1.75], [-53.75, -1.5]]]]}, "2022-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.75, -1.5], [-53.52999999999997, -0.97], [-53.0, -0.75], [-52.75, -0.85], [-52.5, -0.75], [-51.97000000000003, -0.97], [-51.81999999999999, -1.32], [-51.75, -1.35], [-51.68000000000001, -1.32], [-51.52999999999997, -0.97], [-51.0, -0.75], [-50.75, -0.85], [-50.68000000000001, -0.82], [-50.52999999999997, -0.47], [-50.0, -0.25], [-49.47000000000003, -0.47], [-49.25, -1.0], [-49.47000000000003, -1.53], [-49.81999999999999, -1.68], [-49.870000000000005, -1.8], [-49.75, -1.85], [-49.5, -1.75], [-48.97000000000003, -1.97], [-48.75, -2.5], [-48.97000000000003, -3.03], [-49.5, -3.25], [-49.75, -3.15], [-49.81999999999999, -3.18], [-49.97000000000003, -3.53], [-50.5, -3.75], [-50.75, -3.65], [-51.0, -3.75], [-51.25, -3.65], [-51.5, -3.75], [-52.02999999999997, -3.53], [-52.18000000000001, -3.18], [-52.52999999999997, -3.03], [-52.68000000000001, -2.68], [-52.75, -2.65], [-53.0, -2.75], [-53.52999999999997, -2.53], [-53.75, -2.0], [-53.64999999999998, -1.75], [-53.75, -1.5]]]]}, "2022-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.75, -1.5], [-53.52999999999997, -0.97], [-53.0, -0.75], [-52.75, -0.85], [-52.5, -0.75], [-51.97000000000003, -0.97], [-51.81999999999999, -1.32], [-51.75, -1.35], [-51.68000000000001, -1.32], [-51.52999999999997, -0.97], [-51.0, -0.75], [-50.75, -0.85], [-50.68000000000001, -0.82], [-50.52999999999997, -0.47], [-50.0, -0.25], [-49.47000000000003, -0.47], [-49.25, -1.0], [-49.47000000000003, -1.53], [-49.81999999999999, -1.68], [-49.870000000000005, -1.8], [-49.75, -1.85], [-49.5, -1.75], [-48.97000000000003, -1.97], [-48.75, -2.5], [-48.97000000000003, -3.03], [-49.5, -3.25], [-49.75, -3.15], [-49.81999999999999, -3.18], [-49.97000000000003, -3.53], [-50.5, -3.75], [-50.75, -3.65], [-51.0, -3.75], [-51.25, -3.65], [-51.5, -3.75], [-52.02999999999997, -3.53], [-52.18000000000001, -3.18], [-52.52999999999997, -3.03], [-52.68000000000001, -2.68], [-52.75, -2.65], [-53.0, -2.75], [-53.52999999999997, -2.53], [-53.75, -2.0], [-53.64999999999998, -1.75], [-53.75, -1.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.0011411131483783}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3200613310190241}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.897564833354465, 25.90974999367029, 25.662275706937635]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.348066452907858, 25.242051727687112, 25.134566866087823]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1997238674745625, -1.2356847814421899, -1.5247753441403205]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.691515341904335, -1.7212787099463185, -2.0011411131483783]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8885809136594762, -1.8914649024425796, -2.2545531697437355]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.569592833517013, -2.7746808876673428, -2.878309336499954]}}