{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:42.301142", "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": "2015-Apr-07_to_2015-Apr-12_286.5_-12.5"}, "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": 2015040000365}, "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": "April 07 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 12 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 60071.97919339457}, "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": ["Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": -12.5}, "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": 285.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.0, -11.75], [-72.47, -11.97], [-72.25, -12.5], [-72.47, -13.03], [-73.0, -13.25], [-73.53, -13.03], [-73.75, -12.5], [-73.53, -11.97], [-73.0, -11.75]]]]}, "2015-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.0, -13.25], [-71.47, -13.47], [-71.25, -14.0], [-71.35, -14.25], [-71.25, -14.5], [-71.47, -15.03], [-72.0, -15.25], [-72.53, -15.03], [-72.75, -14.5], [-72.65, -14.25], [-72.75, -14.0], [-72.53, -13.47], [-72.0, -13.25]]], [[[-74.18, -12.32], [-74.03, -11.97], [-73.5, -11.75], [-73.25, -11.85], [-73.0, -11.75], [-72.47, -11.97], [-72.25, -12.5], [-72.47, -13.03], [-72.82, -13.18], [-72.85, -13.25], [-72.75, -13.5], [-72.97, -14.03], [-73.5, -14.25], [-73.75, -14.15], [-74.0, -14.25], [-74.53, -14.03], [-74.75, -13.5], [-74.65, -13.25], [-74.75, -13.0], [-74.53, -12.47], [-74.18, -12.32]]]]}, "2015-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.03, -12.47], [-74.5, -12.25], [-74.25, -12.35], [-74.18, -12.32], [-74.03, -11.97], [-73.5, -11.75], [-73.25, -11.85], [-73.0, -11.75], [-72.47, -11.97], [-72.25, -12.5], [-72.37, -12.8], [-72.25, -12.85], [-72.0, -12.75], [-71.47, -12.97], [-71.25, -13.5], [-71.35, -13.75], [-71.25, -14.0], [-71.35, -14.25], [-71.25, -14.5], [-71.47, -15.03], [-72.0, -15.25], [-72.25, -15.15], [-72.5, -15.25], [-72.75, -15.15], [-73.0, -15.25], [-73.25, -15.15], [-73.5, -15.25], [-74.03, -15.03], [-74.18, -14.68], [-74.53, -14.53], [-74.68, -14.18], [-75.03, -14.03], [-75.25, -13.5], [-75.15, -13.25], [-75.25, -13.0], [-75.03, -12.47]]]]}, "2015-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.03, -12.47], [-74.5, -12.25], [-74.25, -12.35], [-74.18, -12.32], [-74.03, -11.97], [-73.5, -11.75], [-73.25, -11.85], [-73.0, -11.75], [-72.47, -11.97], [-72.25, -12.5], [-72.37, -12.8], [-72.25, -12.85], [-72.0, -12.75], [-71.47, -12.97], [-71.25, -13.5], [-71.35, -13.75], [-71.25, -14.0], [-71.35, -14.25], [-71.25, -14.5], [-71.47, -15.03], [-72.0, -15.25], [-72.25, -15.15], [-72.5, -15.25], [-72.75, -15.15], [-73.0, -15.25], [-73.25, -15.15], [-73.5, -15.25], [-74.03, -15.03], [-74.18, -14.68], [-74.53, -14.53], [-74.68, -14.18], [-75.03, -14.03], [-75.25, -13.5], [-75.15, -13.25], [-75.25, -13.0], [-75.03, -12.47]]]]}, "2015-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.03, -12.47], [-74.5, -12.25], [-74.25, -12.35], [-74.18, -12.32], [-74.03, -11.97], [-73.5, -11.75], [-72.97, -11.97], [-72.75, -12.5], [-72.85, -12.75], [-72.82, -12.82], [-72.75, -12.85], [-72.5, -12.75], [-72.25, -12.85], [-72.0, -12.75], [-71.47, -12.97], [-71.25, -13.5], [-71.35, -13.75], [-71.25, -14.0], [-71.35, -14.25], [-71.25, -14.5], [-71.47, -15.03], [-72.0, -15.25], [-72.25, -15.15], [-72.5, -15.25], [-72.75, -15.15], [-73.0, -15.25], [-73.25, -15.15], [-73.5, -15.25], [-74.03, -15.03], [-74.18, -14.68], [-74.53, -14.53], [-74.68, -14.18], [-75.03, -14.03], [-75.25, -13.5], [-75.15, -13.25], [-75.25, -13.0], [-75.03, -12.47]]]]}, "2015-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.5, -11.75], [-72.97, -11.97], [-72.75, -12.5], [-72.85, -12.75], [-72.82, -12.82], [-72.75, -12.85], [-72.5, -12.75], [-72.25, -12.85], [-72.0, -12.75], [-71.47, -12.97], [-71.25, -13.5], [-71.35, -13.75], [-71.25, -14.0], [-71.35, -14.25], [-71.25, -14.5], [-71.47, -15.03], [-72.0, -15.25], [-72.53, -15.03], [-72.68, -14.68], [-72.75, -14.65], [-73.0, -14.75], [-73.53, -14.53], [-73.75, -14.0], [-73.65, -13.75], [-73.68, -13.68], [-73.75, -13.65], [-74.0, -13.75], [-74.53, -13.53], [-74.75, -13.0], [-74.53, -12.47], [-74.18, -12.32], [-74.03, -11.97], [-73.5, -11.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3937739795582615}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.47217567719975}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": 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of mean standardized t2m anomalies.", "value": [-1.4996066562401085, -1.540438953431174, -2.0312709141618477, -1.8637825376895258, -1.73496317586446, -1.4181685909962773]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4996066562401085, -1.9502912621475146, -2.881125570408565, -2.4093761660200617, -2.0679412717772196, -1.6011784199739598]}}