{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:22.641132", "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-26_to_2021-Oct-28_298.0_-3.5"}, "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": 2021100000885}, "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 26 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 28 2021"}, "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": 86363.11728632239}, "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": -3.5}, "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": 298.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-65.53, -3.47], [-65.0, -3.25], [-64.75, -3.35], [-64.5, -3.25], [-64.0, -3.46], [-63.68, -3.32], [-63.65, -3.25], [-63.75, -3.0], [-63.65, -2.75], [-63.75, -2.5], [-63.53, -1.97], [-63.0, -1.75], [-62.75, -1.85], [-62.5, -1.75], [-62.25, -1.85], [-62.0, -1.75], [-61.75, -1.85], [-61.68, -1.82], [-61.53, -1.47], [-61.0, -1.25], [-60.47, -1.47], [-60.25, -2.0], [-60.47, -2.53], [-60.82, -2.68], [-60.85, -2.75], [-60.75, -3.0], [-60.85, -3.25], [-60.75, -3.5], [-60.85, -3.75], [-60.75, -4.0], [-60.97, -4.53], [-61.32, -4.68], [-61.47, -5.03], [-62.0, -5.25], [-62.25, -5.15], [-62.5, -5.25], [-62.75, -5.15], [-62.82, -5.18], [-62.97, -5.53], [-63.5, -5.75], [-64.0, -5.54], [-64.5, -5.75], [-65.03, -5.53], [-65.25, -5.0], [-65.15, -4.75], [-65.18, -4.68], [-65.53, -4.53], [-65.75, -4.0], [-65.53, -3.47]]]]}}, "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": {"2021-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.52999999999997, -4.53], [-65.75, -4.0], [-65.52999999999997, -3.47], [-65.0, -3.25], [-64.75, -3.35], [-64.5, -3.25], [-64.0, -3.46], [-63.68000000000001, -3.32], [-63.64999999999998, -3.25], [-63.75, -3.0], [-63.64999999999998, -2.75], [-63.75, -2.5], [-63.52999999999997, -1.97], [-63.0, -1.75], [-62.75, -1.85], [-62.5, -1.75], [-62.25, -1.85], [-62.0, -1.75], [-61.75, -1.85], [-61.68000000000001, -1.82], [-61.52999999999997, -1.47], [-61.0, -1.25], [-60.47000000000003, -1.47], [-60.25, -2.0], [-60.47000000000003, -2.53], [-60.81999999999999, -2.68], [-60.85000000000002, -2.75], [-60.75, -3.0], [-60.85000000000002, -3.25], [-60.75, -3.5], [-60.85000000000002, -3.75], [-60.75, -4.0], [-60.97000000000003, -4.53], [-61.31999999999999, -4.68], [-61.47000000000003, -5.03], [-62.0, -5.25], [-62.25, -5.15], [-62.5, -5.25], [-62.75, -5.15], [-62.81999999999999, -5.18], [-62.97000000000003, -5.53], [-63.5, -5.75], [-64.0, -5.54], [-64.5, -5.75], [-65.02999999999997, -5.53], [-65.25, -5.0], [-65.14999999999998, -4.75], [-65.18, -4.68], [-65.52999999999997, -4.53]]]]}, "2021-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.52999999999997, -4.53], [-65.75, -4.0], [-65.52999999999997, -3.47], [-65.0, -3.25], [-64.75, -3.35], [-64.5, -3.25], [-64.0, -3.46], [-63.68000000000001, -3.32], [-63.64999999999998, -3.25], [-63.75, -3.0], [-63.64999999999998, -2.75], [-63.75, -2.5], [-63.52999999999997, -1.97], [-63.0, -1.75], [-62.75, -1.85], [-62.5, -1.75], [-62.25, -1.85], [-62.0, -1.75], [-61.75, -1.85], [-61.68000000000001, -1.82], [-61.52999999999997, -1.47], [-61.0, -1.25], [-60.47000000000003, -1.47], [-60.25, -2.0], [-60.47000000000003, -2.53], [-60.81999999999999, -2.68], [-60.85000000000002, -2.75], [-60.75, -3.0], [-60.85000000000002, -3.25], [-60.75, -3.5], [-60.85000000000002, -3.75], [-60.75, -4.0], [-60.97000000000003, -4.53], [-61.31999999999999, -4.68], [-61.47000000000003, -5.03], [-62.0, -5.25], [-62.25, -5.15], [-62.5, -5.25], [-62.75, -5.15], [-62.81999999999999, -5.18], [-62.97000000000003, -5.53], [-63.5, -5.75], [-64.0, -5.54], [-64.5, -5.75], [-65.02999999999997, -5.53], [-65.25, -5.0], [-65.14999999999998, -4.75], [-65.18, -4.68], [-65.52999999999997, -4.53]]]]}, "2021-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.52999999999997, -4.53], [-65.75, -4.0], [-65.52999999999997, -3.47], [-65.0, -3.25], [-64.75, -3.35], [-64.5, -3.25], [-64.0, -3.46], [-63.68000000000001, -3.32], [-63.64999999999998, -3.25], [-63.75, -3.0], [-63.64999999999998, -2.75], [-63.75, -2.5], [-63.52999999999997, -1.97], [-63.0, -1.75], [-62.75, -1.85], [-62.5, -1.75], [-62.25, -1.85], [-62.0, -1.75], [-61.75, -1.85], [-61.68000000000001, -1.82], [-61.52999999999997, -1.47], [-61.0, -1.25], [-60.47000000000003, -1.47], [-60.25, -2.0], [-60.47000000000003, -2.53], [-60.81999999999999, -2.68], [-60.85000000000002, -2.75], [-60.75, -3.0], [-60.85000000000002, -3.25], [-60.75, -3.5], [-60.85000000000002, -3.75], [-60.75, -4.0], [-60.97000000000003, -4.53], [-61.31999999999999, -4.68], [-61.47000000000003, -5.03], [-62.0, -5.25], [-62.25, -5.15], [-62.5, -5.25], [-62.75, -5.15], [-62.81999999999999, -5.18], [-62.97000000000003, -5.53], [-63.5, -5.75], [-64.0, -5.54], [-64.5, -5.75], [-65.02999999999997, -5.53], [-65.25, -5.0], [-65.14999999999998, -4.75], [-65.18, -4.68], [-65.52999999999997, -4.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.199575718810763}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6464043520997738}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.472468401002914, 25.300638359305765, 25.252934400501317]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.00641237434644, 24.608388774471507, 24.889936037907432]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5299509875898991, -1.681335478200842, -1.7279265905085797]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.766515870574608, -2.199575718810763, -2.093304275849107]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4380320614708313, -1.5543488287648854, -1.6196491962321058]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6697665940717585, -1.9215470533564216, -1.8865265123374106]}}