{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:33.632191", "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": "2021-Nov-23_to_2021-Nov-28_353.0_38.0"}, "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": 2021110000805}, "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": "November 23 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 28 2021"}, "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": 83746.80734275075}, "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": ["Morocco", "Portugal", "Spain"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": ["Alboran Sea", "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": 38.0}, "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": 353.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 351.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-9.03, 37.53], [-8.62, 37.7], [-8.75, 38.0], [-8.65, 38.25], [-8.75, 38.5], [-8.53, 39.03], [-8.0, 39.25], [-7.75, 39.15], [-7.5, 39.25], [-7.25, 39.15], [-7.0, 39.25], [-6.47, 39.03], [-6.32, 38.68], [-6.25, 38.65], [-6.0, 38.75], [-5.75, 38.65], [-5.5, 38.75], [-5.25, 38.65], [-5.0, 38.75], [-4.47, 38.53], [-4.25, 38.0], [-4.46, 37.5], [-4.25, 37.0], [-4.35, 36.75], [-4.25, 36.5], [-4.47, 35.97], [-4.82, 35.82], [-4.85, 35.75], [-4.75, 35.5], [-4.97, 34.97], [-5.5, 34.75], [-6.03, 34.97], [-6.25, 35.5], [-6.15, 35.75], [-6.18, 35.82], [-6.53, 35.97], [-6.68, 36.32], [-6.75, 36.35], [-6.82, 36.32], [-6.85, 36.25], [-6.75, 36.0], [-6.97, 35.47], [-7.5, 35.25], [-7.75, 35.35], [-8.0, 35.25], [-8.25, 35.35], [-8.5, 35.25], [-9.03, 35.47], [-9.25, 36.0], [-9.15, 36.25], [-9.25, 36.5], [-9.15, 36.75], [-9.25, 37.0], [-9.03, 37.53]]]]}}, "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": 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"value": [5.233722053062763, 6.4152395021421285, 6.518787205009232, 6.886669362353473, 6.493563217427663, 5.402658092968352]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.414153065363495, -3.748198764922831, -3.034318417681889, -3.1960767144205895, -2.654554363712464, -3.1140189410318113]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.3891763257004754, -4.5396264152827825, -4.060922302217648, -4.250935972085415, -4.022800340397964, -5.118220637688523]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9172941695832297, -1.6832367672630548, -1.5470867442743272, -1.8019163621915086, -1.5452350243681314, -1.8218271126459178]}, "anom_scaled_evo_maxamp": {"name": "Evolution of 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