{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:07.265450", "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-Aug-04_to_2012-Aug-06_353.0_42.5"}, "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": 2012080000309}, "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": "August 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 06 2012"}, "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": 54909.01756384214}, "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", "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": ["North 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": 42.5}, "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": 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": 350.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 353.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.53, 43.53], [-9.18, 43.68], [-9.03, 44.03], [-8.5, 44.25], [-8.25, 44.15], [-8.0, 44.25], [-7.47, 44.03], [-7.32, 43.68], [-7.25, 43.65], [-7.0, 43.75], [-6.47, 43.53], [-6.32, 43.18], [-5.97, 43.03], [-5.75, 42.5], [-5.97, 41.97], [-6.32, 41.82], [-6.35, 41.75], [-6.25, 41.5], [-6.47, 40.97], [-6.82, 40.82], [-6.97, 40.47], [-7.5, 40.25], [-7.75, 40.35], [-8.0, 40.25], [-8.25, 40.35], [-8.5, 40.25], [-9.03, 40.47], [-9.25, 41.0], [-9.15, 41.25], [-9.25, 41.5], [-9.15, 41.75], [-9.18, 41.82], [-9.53, 41.97], [-9.75, 42.5], [-9.65, 42.75], [-9.75, 43.0], [-9.53, 43.53]]]]}, "2012-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.53, 43.53], [-9.18, 43.68], [-9.03, 44.03], [-8.5, 44.25], [-8.25, 44.15], [-8.0, 44.25], [-7.47, 44.03], [-7.32, 43.68], [-7.25, 43.65], [-7.0, 43.75], [-6.47, 43.53], [-6.32, 43.18], [-5.97, 43.03], [-5.75, 42.5], [-5.97, 41.97], [-6.32, 41.82], [-6.35, 41.75], [-6.25, 41.5], [-6.47, 40.97], [-6.82, 40.82], [-6.97, 40.47], [-7.5, 40.25], [-7.75, 40.35], [-8.0, 40.25], [-8.25, 40.35], [-8.5, 40.25], [-9.03, 40.47], [-9.25, 41.0], [-9.15, 41.25], [-9.25, 41.5], [-9.15, 41.75], [-9.18, 41.82], [-9.53, 41.97], [-9.75, 42.5], [-9.65, 42.75], [-9.75, 43.0], [-9.53, 43.53]]]]}, "2012-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.53, 43.53], [-9.18, 43.68], [-9.03, 44.03], [-8.5, 44.25], [-8.25, 44.15], [-8.0, 44.25], [-7.47, 44.03], [-7.32, 43.68], [-7.25, 43.65], [-7.0, 43.75], [-6.47, 43.53], [-6.32, 43.18], [-5.97, 43.03], [-5.75, 42.5], [-5.97, 41.97], [-6.32, 41.82], [-6.35, 41.75], [-6.25, 41.5], [-6.47, 40.97], [-6.82, 40.82], [-6.97, 40.47], [-7.5, 40.25], [-7.75, 40.35], [-8.0, 40.25], [-8.25, 40.35], [-8.5, 40.25], [-9.03, 40.47], [-9.25, 41.0], [-9.15, 41.25], [-9.25, 41.5], [-9.15, 41.75], [-9.18, 41.82], [-9.53, 41.97], [-9.75, 42.5], [-9.65, 42.75], [-9.75, 43.0], [-9.53, 43.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.875338558395242}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.054115679481407}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.877854203827042, 15.169736046780429, 15.778893678173631]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.019154399371416, 12.887227563566682, 13.753795178743928]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7823614686302727, -4.506631385362859, -3.873354184451088]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.792691623026769, -5.875338558395242, -4.972938630041654]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4562980892250132, -1.6940944790536785, -1.4260198196827067]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6730815391397365, -1.871918381874468, -1.595467345546547]}}