{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:02.445840", "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": "2024-Sep-30_to_2024-Oct-04_286.0_-37.5"}, "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": 2024090000661}, "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": "September 30 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 04 2024"}, "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": 50956.66320142349}, "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": ["Chile"]}, "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": ["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": -37.5}, "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": 286.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 284.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 286.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -40.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -36.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-74.47, -40.53], [-75.0, -40.75], [-75.53, -40.53], [-75.68, -40.18], [-76.03, -40.03], [-76.25, -39.5], [-76.03, -38.97], [-75.68, -38.82], [-75.53, -38.47], [-75.18, -38.32], [-75.15, -38.25], [-75.25, -38.0], [-75.15, -37.75], [-75.25, -37.5], [-75.15, -37.25], [-75.25, -37.0], [-75.15, -36.75], [-75.25, -36.5], [-75.15, -36.25], [-75.25, -36.0], [-75.03, -35.47], [-74.5, -35.25], [-74.25, -35.35], [-74.0, -35.25], [-73.47, -35.47], [-73.25, -36.0], [-73.35, -36.25], [-73.25, -36.5], [-73.46, -37.0], [-73.25, -37.5], [-73.35, -37.75], [-73.25, -38.0], [-73.35, -38.25], [-73.32, -38.32], [-72.97, -38.47], [-72.75, -39.0], [-72.85, -39.25], [-72.75, -39.5], [-72.97, -40.03], [-73.5, -40.25], [-73.75, -40.15], [-74.0, -40.25], [-74.25, -40.15], [-74.32, -40.18], [-74.47, -40.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.W.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.52999999999997, -39.47], [-75.0, -39.25], [-74.47000000000003, -39.47], [-74.25, -40.0], [-74.47000000000003, -40.53], [-75.0, -40.75], [-75.52999999999997, -40.53], [-75.75, -40.0], [-75.52999999999997, -39.47]]]]}, "2024-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.02999999999997, -40.03], [-76.25, -39.5], [-76.02999999999997, -38.97], [-75.68, -38.82], [-75.52999999999997, -38.47], [-75.18, -38.32], [-75.14999999999998, -38.25], [-75.25, -38.0], [-75.14999999999998, -37.75], [-75.25, -37.5], [-75.14999999999998, -37.25], [-75.25, -37.0], [-75.14999999999998, -36.75], [-75.25, -36.5], [-75.02999999999997, -35.97], [-74.5, -35.75], [-74.25, -35.85], [-74.0, -35.75], [-73.47000000000003, -35.97], [-73.25, -36.5], [-73.45999999999998, -37.0], [-73.25, -37.5], [-73.35000000000002, -37.75], [-73.25, -38.0], [-73.35000000000002, -38.25], [-73.32, -38.32], [-72.97000000000003, -38.47], [-72.75, -39.0], [-72.85000000000002, -39.25], [-72.75, -39.5], [-72.97000000000003, -40.03], [-73.5, -40.25], [-73.75, -40.15], [-74.0, -40.25], [-74.25, -40.15], [-74.32, -40.18], [-74.47000000000003, -40.53], [-75.0, -40.75], [-75.52999999999997, -40.53], [-75.68, -40.18], [-76.02999999999997, -40.03]]]]}, "2024-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.02999999999997, -40.03], [-76.25, -39.5], [-76.02999999999997, -38.97], [-75.68, -38.82], [-75.52999999999997, -38.47], [-75.18, -38.32], [-75.14999999999998, -38.25], [-75.25, -38.0], [-75.14999999999998, -37.75], [-75.25, -37.5], [-75.14999999999998, -37.25], [-75.25, -37.0], [-75.14999999999998, -36.75], [-75.25, -36.5], [-75.14999999999998, -36.25], [-75.25, -36.0], [-75.02999999999997, -35.47], [-74.5, -35.25], [-74.25, -35.35], [-74.0, -35.25], [-73.47000000000003, -35.47], [-73.25, -36.0], [-73.35000000000002, -36.25], [-73.25, -36.5], [-73.45999999999998, -37.0], [-73.25, -37.5], [-73.35000000000002, -37.75], [-73.25, -38.0], [-73.35000000000002, -38.25], [-73.32, -38.32], [-72.97000000000003, -38.47], [-72.75, -39.0], [-72.85000000000002, -39.25], [-72.75, -39.5], [-72.97000000000003, -40.03], [-73.5, -40.25], [-73.75, -40.15], [-74.0, -40.25], [-74.25, -40.15], [-74.32, -40.18], [-74.47000000000003, -40.53], [-75.0, -40.75], [-75.52999999999997, -40.53], [-75.68, -40.18], [-76.02999999999997, -40.03]]]]}, "2024-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.02999999999997, -40.03], [-76.25, -39.5], [-76.02999999999997, -38.97], [-75.68, -38.82], [-75.52999999999997, -38.47], [-75.18, -38.32], [-75.14999999999998, -38.25], [-75.25, -38.0], [-75.14999999999998, -37.75], [-75.25, -37.5], [-75.14999999999998, -37.25], [-75.25, -37.0], [-75.14999999999998, -36.75], [-75.25, -36.5], [-75.14999999999998, -36.25], [-75.25, -36.0], [-75.02999999999997, -35.47], [-74.5, -35.25], [-74.25, -35.35], [-74.0, -35.25], [-73.47000000000003, -35.47], [-73.25, -36.0], [-73.35000000000002, 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[-74.02999999999997, -39.53]]], [[[-75.25, -36.0], [-75.02999999999997, -35.47], [-74.5, -35.25], [-74.25, -35.35], [-74.0, -35.25], [-73.47000000000003, -35.47], [-73.25, -36.0], [-73.35000000000002, -36.25], [-73.25, -36.5], [-73.45999999999998, -37.0], [-73.25, -37.5], [-73.47000000000003, -38.03], [-74.0, -38.25], [-74.52999999999997, -38.03], [-74.68, -37.68], [-75.02999999999997, -37.53], [-75.25, -37.0], [-75.14999999999998, -36.75], [-75.25, -36.5], [-75.14999999999998, -36.25], [-75.25, -36.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.6299060539197967}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.592371652756185}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.624368286132835, 9.00188183700834, 9.698683009071999, 10.07993305751262, 10.489943440755212]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.624368286132835, 8.238445536295615, 9.171870168050134, 9.598999277750693, 9.733483886718773]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1579368516474347, -2.2227805542343018, -1.5907506472017385, -1.2303104924955672, -1.1041205471487956]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1579368516474347, -2.6299060539197967, -1.816135859094004, -1.3477782795321787, -1.2134602655357298]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3145112099375564, -2.604869106531642, -1.8564748936777349, -1.4897882800767333, -1.4733893492507186]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3145112099375564, -2.8879876264207907, -2.2989789517696946, -1.742527659399774, -1.5628207188215597]}}