{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:12.595902", "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-07_to_2020-Sep-09_3.0_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": 2020090000275}, "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 07 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 09 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": 52658.883890038596}, "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": ["Spain"]}, "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": ["Balearic Sea", "Mediterranean Sea"]}, "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": 3.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "3.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -1.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 3.0}, "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": 40.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-1.75, 39.5], [-1.53, 40.03], [-1.0, 40.25], [-0.75, 40.146], [-0.5, 40.25], [-0.25, 40.146], [0.0, 40.25], [0.25, 40.146], [0.323, 40.177], [0.47, 40.53], [1.0, 40.75], [1.25, 40.646], [1.5, 40.75], [1.75, 40.646], [2.0, 40.75], [2.25, 40.646], [2.5, 40.75], [2.75, 40.646], [3.0, 40.75], [3.53, 40.53], [3.75, 40.0], [3.646, 39.75], [3.75, 39.5], [3.53, 38.97], [3.0, 38.75], [2.47, 38.97], [2.323, 39.323], [2.25, 39.354], [2.177, 39.323], [2.146, 39.25], [2.25, 39.0], [2.146, 38.75], [2.25, 38.5], [2.03, 37.97], [1.5, 37.75], [1.25, 37.854], [1.0, 37.75], [0.75, 37.854], [0.677, 37.823], [0.53, 37.47], [0.0, 37.25], [-0.53, 37.47], [-0.75, 38.0], [-0.646, 38.25], [-0.677, 38.323], [-1.03, 38.47], [-1.177, 38.823], [-1.53, 38.97], [-1.75, 39.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-1.1767766952966368, 38.82322330470336], 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