{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:49.971531", "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": "2012-Mar-18_to_2012-Mar-22_358.5_41.0"}, "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": 2012030001121}, "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": "March 18 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 22 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 100071.9376985849}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": []}, "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": 41.0}, "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": 358.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 353.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 359.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.53, 41.97], [-6.75, 42.5], [-6.53, 43.03], [-6.0, 43.25], 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[-2.25, 39.85], [-2.5, 39.75], [-2.8, 39.88], [-2.97, 39.47], [-3.32, 39.32], [-3.47, 38.97], [-4.0, 38.75], [-4.53, 38.97], [-4.68, 39.32], [-4.75, 39.35], [-5.0, 39.25], [-5.25, 39.35], [-5.5, 39.25], [-6.03, 39.47], [-6.18, 39.82], [-6.53, 39.97], [-6.75, 40.5]]]]}, "2012-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.75, 40.5], [-6.53, 41.03], [-6.18, 41.18], [-6.15, 41.25], [-6.25, 41.5], [-6.15, 41.75], [-6.18, 41.82], [-6.53, 41.97], [-6.75, 42.5], [-6.53, 43.03], [-6.0, 43.25], [-5.75, 43.15], [-5.5, 43.25], [-5.25, 43.15], [-5.18, 43.18], [-5.03, 43.53], [-4.5, 43.75], [-3.97, 43.53], [-3.82, 43.18], [-3.47, 43.03], [-3.25, 42.5], [-3.37, 42.2], [-3.25, 42.15], [-3.18, 42.18], [-3.03, 42.53], [-2.5, 42.75], [-2.25, 42.65], [-2.0, 42.75], [-1.47, 42.53], [-1.25, 42.0], [-1.35, 41.75], [-1.32, 41.68], [-1.25, 41.65], [-1.0, 41.75], [-0.47, 41.53], [-0.25, 41.0], [-0.35, 40.75], [-0.25, 40.5], [-0.47, 39.97], [-1.0, 39.75], [-1.25, 39.85], [-1.5, 39.75], [-1.75, 39.85], [-2.0, 39.75], [-2.25, 39.85], [-2.5, 39.75], [-2.8, 39.88], [-2.97, 39.47], [-3.32, 39.32], [-3.47, 38.97], [-4.0, 38.75], [-4.53, 38.97], [-4.68, 39.32], [-4.75, 39.35], [-5.0, 39.25], [-5.25, 39.35], [-5.5, 39.25], [-6.03, 39.47], [-6.18, 39.82], [-6.53, 39.97], [-6.75, 40.5]]]]}, "2012-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.75, 40.5], [-6.53, 41.03], [-6.18, 41.18], [-6.15, 41.25], [-6.25, 41.5], [-6.15, 41.75], [-6.25, 42.0], [-6.15, 42.25], [-6.25, 42.5], [-6.03, 43.03], [-5.5, 43.25], [-5.25, 43.15], [-5.0, 43.25], [-4.75, 43.15], [-4.5, 43.25], [-4.25, 43.15], [-4.0, 43.25], [-3.47, 43.03], [-3.25, 42.5], [-3.37, 42.2], [-3.25, 42.15], [-3.18, 42.18], [-3.03, 42.53], [-2.5, 42.75], [-2.25, 42.65], [-2.0, 42.75], [-1.47, 42.53], [-1.25, 42.0], [-1.35, 41.75], [-1.32, 41.68], [-1.25, 41.65], [-1.0, 41.75], [-0.47, 41.53], [-0.25, 41.0], [-0.35, 40.75], [-0.25, 40.5], [-0.47, 39.97], [-1.0, 39.75], [-1.25, 39.85], [-1.5, 39.75], [-1.75, 39.85], [-2.0, 39.75], [-2.25, 39.85], [-2.5, 39.75], [-2.8, 39.88], [-2.97, 39.47], [-3.32, 39.32], [-3.47, 38.97], [-4.0, 38.75], [-4.53, 38.97], [-4.68, 39.32], [-4.75, 39.35], [-5.0, 39.25], [-5.25, 39.35], [-5.5, 39.25], [-6.03, 39.47], [-6.18, 39.82], [-6.53, 39.97], [-6.75, 40.5]]]]}, "2012-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 39.47], [-4.75, 40.0], [-4.53, 40.53], [-4.0, 40.75], [-3.47, 40.53], [-3.25, 40.0], [-3.47, 39.47], [-4.0, 39.25], [-4.53, 39.47]]], [[[-2.03, 40.47], [-2.25, 41.0], [-2.03, 41.53], [-1.5, 41.75], [-0.97, 41.53], [-0.75, 41.0], [-0.97, 40.47], [-1.5, 40.25], [-2.03, 40.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.1380907393283906}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.080849887225729}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.481086249928296, 4.306084231049624, 4.275948387178403, 3.109344387750866, 5.8160635730286]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.5220709700962516, 0.6096868307174645, 1.0349206894431404, -0.30904902854496186, 3.87823403533838]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.661595503547384, -4.701449430715063, -4.779869389937912, -5.8582686376156765, -4.211137358161494]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.154071494754874, -5.708537208680241, -6.078762767442186, -7.1380907393283906, -4.6299969377513435]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.605552017009881, -1.565988267128566, -1.5538954263533558, -1.8639711898359401, -1.3531877836414181]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7841929394528213, -1.7876127730410918, -1.9501042453380997, -2.348847223583324, -1.3674008044875643]}}