{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:07.575265", "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-Jul-18_to_2020-Jul-20_348.5_52.5"}, "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": 2020070000716}, "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": "July 18 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 20 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": 75215.29829486454}, "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": ["Ireland", "United Kingdom"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "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"]}, "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": 52.5}, "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": 348.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "348.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 352.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-12.75, 52.5], [-12.646, 52.75], [-12.75, 53.0], [-12.53, 53.53], [-12.125, 53.698], [-12.177, 53.823], [-12.53, 53.97], 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52.25], [-12.75, 52.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-12.67677669529661, 52.17677669529664], [-12.646446609406723, 52.25], [-12.75, 52.5], [-12.646446609406723, 52.75], [-12.75, 53.0], [-12.530330085889887, 53.53033008588991], [-12.125, 53.69822330470337], [-12.17677669529661, 53.82322330470336], [-12.530330085889887, 53.96966991411009], [-12.75, 54.5], [-12.646446609406723, 54.75], [-12.67677669529661, 54.82322330470336], [-13.030330085889887, 54.96966991411009], [-13.25, 55.5], [-13.030330085889887, 56.03033008588991], [-12.5, 56.25], [-11.969669914110113, 56.03033008588991], [-11.82322330470339, 55.67677669529664], [-11.75, 55.64644660940672], [-11.67677669529661, 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[13.090084232028232, 12.929677260835717, 13.142860389445843]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.204816720310134, 12.077538014675326, 12.040545265459684]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5401067819702332, -1.8055984133476373, -1.6478195112486642]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.520981555141759, -2.8147269723166346, -2.916525436154245]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2944066693804197, -1.496860587043246, -1.3332664957350369]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution 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