{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:50.207556", "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": "2023-Aug-15_to_2023-Aug-21_286.5_-51.5"}, "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": 2023080000494}, "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": "August 15 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 21 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 114294.09428747972}, "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": ["Argentina", "Chile"]}, "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": ["Pacific 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": -51.5}, "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": 286.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 283.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 289.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -52.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -45.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-71.47, -53.03], [-72.0, -53.25], [-72.25, -53.15], [-72.5, -53.25], [-73.03, -53.03], [-73.18, -52.68], [-73.53, 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[-72.85, -49.75], [-72.82, -49.82], [-72.5, -49.96], [-72.0, -49.75], [-71.75, -49.85], [-71.5, -49.75], [-70.97, -49.97], [-70.75, -50.5], [-70.87, -50.8], [-70.47, -50.97], [-70.25, -51.5], [-70.47, -52.03], [-70.82, -52.18], [-70.97, -52.53], [-71.32, -52.68], [-71.47, -53.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.W.South-America", "S.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, -48.0], [-77.02999999999997, -47.47], [-76.68, -47.32], [-76.52999999999997, -46.97], [-76.18, -46.82], [-76.14999999999998, -46.75], [-76.25, -46.5], [-76.02999999999997, -45.97], [-75.68, -45.82], [-75.64999999999998, -45.75], [-75.75, -45.5], [-75.52999999999997, -44.97], [-75.0, -44.75], [-74.47000000000003, -44.97], [-74.25, -45.5], 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"description": "Mean t2m anomaly over entire duration", "value": -3.517321656707894}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.7003870186092627, -1.2315869210279402, -0.833261941766807, -1.312778794403755, -2.51500010432369, -2.381757052310377, -1.4496296582869945]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.387287892656843, -10.774183427493142, -9.699055490262879, -4.169673821018989, -4.407461421535061, -4.256835275966864, -2.573791038658328]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.338713807790963, -3.826277801410536, -3.4190148514853322, -3.0980650102263665, -3.7269330872902304, -3.6280671356343452, -2.810939505172238]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m 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