{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:02.548694", "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": "2018-Sep-30_to_2018-Oct-03_287.5_-41.0"}, "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": 2018090001044}, "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 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 77874.87613887277}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.W.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": -41.0}, "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": 287.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, -39.97], [-72.68, -39.82], [-72.65, -39.75], 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-40.5], [-73.03, -39.97]]]]}, "2018-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, -39.97], [-72.68, -39.82], [-72.65, -39.75], [-72.75, -39.5], [-72.65, -39.25], [-72.75, -39.0], [-72.65, -38.75], [-72.68, -38.68], [-73.03, -38.53], [-73.25, -38.0], [-73.15, -37.75], [-73.25, -37.5], [-73.15, -37.25], [-73.25, -37.0], [-73.03, -36.47], [-72.5, -36.25], [-72.25, -36.35], [-72.18, -36.32], [-72.15, -36.25], [-72.25, -36.0], [-72.03, -35.47], [-71.5, -35.25], [-71.25, -35.35], [-71.0, -35.25], [-70.5, -35.46], [-70.0, -35.25], [-69.47, -35.47], [-69.25, -36.0], [-69.35, -36.25], [-69.25, -36.5], [-69.47, -37.03], [-69.82, -37.18], [-69.85, -37.25], [-69.82, -37.32], [-69.47, -37.47], [-69.25, -38.0], [-69.47, -38.53], [-70.0, -38.75], [-70.25, -38.65], [-70.32, -38.68], [-70.35, -38.75], [-70.25, -39.0], [-70.35, -39.25], [-70.25, -39.5], [-70.47, -40.03], [-71.0, -40.25], [-71.3, -40.12], [-71.35, -40.25], [-71.25, -40.5], [-71.47, -41.03], [-71.82, 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"value": -4.852866475087883}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.8350942798803658, 0.037041059606451654, 2.411844646461759, 0.7598717249915694]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.9922937358505237, -4.90214451721306, -3.678638287179581, -3.066664932231731]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.828670908067428, -6.15496377923257, -3.747449514771837, -3.7344465633032202]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.894020930641489, -8.078441314165218, -5.1180698182582205, -4.327263005752798]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.255297872825562, -2.8207850534096317, -1.6661962404057515, -1.519967932296056]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.497254072256107, -3.5749476834849254, -2.1954710649619167, -1.6269277560675945]}}