{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:13.373505", "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": "2020-Sep-14_to_2020-Sep-16_328.5_39.5"}, "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": 2020090000421}, "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 14 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 16 2020"}, "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": 78582.73804669308}, "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": ["Portugal"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Atlantic Ocean", "Azores Plateau"]}, "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": 39.5}, "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": 328.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "328.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 326.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 330.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-34.03, 40.53], [-33.677, 40.677], [-33.53, 41.03], [-33.177, 41.177], [-33.03, 41.53], [-32.5, 41.75], [-32.25, 41.646], [-32.0, 41.75], [-31.75, 41.646], [-31.5, 41.75], [-30.97, 41.53], [-30.75, 41.0], [-30.854, 40.75], [-30.823, 40.677], [-30.75, 40.646], [-30.5, 40.75], [-29.97, 40.53], [-29.75, 40.0], [-29.854, 39.75], [-29.823, 39.677], [-29.75, 39.646], [-29.5, 39.75], [-28.97, 39.53], [-28.75, 39.0], [-28.97, 38.47], [-29.5, 38.25], [-29.75, 38.354], [-30.0, 38.25], [-30.25, 38.354], [-30.5, 38.25], [-30.75, 38.354], [-31.0, 38.25], [-31.25, 38.354], [-31.323, 38.323], [-31.47, 37.97], [-32.0, 37.75], [-32.25, 37.854], [-32.323, 37.823], [-32.47, 37.47], [-33.0, 37.25], [-33.53, 37.47], [-33.75, 38.0], [-33.646, 38.25], [-33.75, 38.5], [-33.646, 38.75], [-33.677, 38.823], [-34.03, 38.97], [-34.25, 39.5], [-34.146, 39.75], [-34.25, 40.0], [-34.03, 40.53]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time 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"Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0973795262034343, -2.1308041622271294, -1.8683908793884172]}}