{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:56.784522", "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": "2013-Jul-26_to_2013-Jul-29_356.0_40.0"}, "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": 2013070001346}, "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 26 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 29 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 218396.9103599385}, "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": []}, "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": 40.0}, "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": 356.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "356.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 351.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 357.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.53, 36.97], [-6.75, 37.5], [-6.53, 38.03], [-6.0, 38.25], 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42.53], [-7.18, 42.68], [-7.03, 43.03], [-6.5, 43.25], [-6.25, 43.15], [-6.0, 43.25], [-5.47, 43.03], [-5.32, 42.68], [-4.97, 42.53], [-4.82, 42.18], [-4.75, 42.15], [-4.5, 42.25], [-4.25, 42.15], [-4.0, 42.25], [-3.47, 42.03], [-3.32, 41.68], [-3.25, 41.65], [-3.0, 41.75], [-2.47, 41.53], [-2.25, 41.0], [-2.35, 40.75], [-2.25, 40.5], [-2.35, 40.25], [-2.32, 40.18], [-1.97, 40.03], [-1.75, 39.5], [-1.96, 39.0], [-1.75, 38.5], [-1.97, 37.97], [-2.32, 37.82], [-2.47, 37.47], [-2.82, 37.32], [-2.97, 36.97], [-3.5, 36.75], [-3.75, 36.85], [-3.82, 36.82], [-3.97, 36.47], [-4.5, 36.25], [-5.03, 36.47], [-5.25, 37.0], [-5.12, 37.3], [-5.25, 37.35], [-5.32, 37.32], [-5.47, 36.97], [-6.0, 36.75], [-6.53, 36.97], [-6.75, 37.5], [-6.65, 37.75], [-6.68, 37.82], [-7.03, 37.97], [-7.18, 38.32], [-7.3, 38.38], [-7.35, 38.25], [-7.25, 38.0], [-7.47, 37.47], [-8.0, 37.25], [-8.53, 37.47], [-8.68, 37.82], [-9.03, 37.97], [-9.25, 38.5]]]]}, "2013-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.25, 38.5], [-9.03, 39.03], [-8.68, 39.18], [-8.65, 39.25], [-8.75, 39.5], [-8.65, 39.75], [-8.75, 40.0], [-8.65, 40.25], [-8.75, 40.5], [-8.65, 40.75], [-8.75, 41.0], [-8.65, 41.25], [-8.75, 41.5], [-8.53, 42.03], [-8.0, 42.25], [-7.7, 42.12], [-7.53, 42.53], [-7.18, 42.68], [-7.03, 43.03], [-6.5, 43.25], [-6.25, 43.15], [-6.0, 43.25], [-5.47, 43.03], [-5.32, 42.68], [-4.97, 42.53], [-4.82, 42.18], [-4.75, 42.15], [-4.5, 42.25], [-4.25, 42.15], [-4.0, 42.25], [-3.47, 42.03], [-3.32, 41.68], [-3.25, 41.65], [-3.0, 41.75], [-2.47, 41.53], [-2.25, 41.0], [-2.35, 40.75], [-2.25, 40.5], [-2.35, 40.25], [-2.32, 40.18], [-1.97, 40.03], [-1.75, 39.5], [-1.96, 39.0], [-1.75, 38.5], [-1.97, 37.97], [-2.32, 37.82], [-2.47, 37.47], [-2.82, 37.32], [-2.97, 36.97], [-3.5, 36.75], [-3.75, 36.85], [-3.82, 36.82], [-3.97, 36.47], [-4.5, 36.25], [-5.03, 36.47], [-5.25, 37.0], [-5.12, 37.3], [-5.25, 37.35], [-5.32, 37.32], [-5.47, 36.97], [-6.0, 36.75], [-6.53, 36.97], [-6.75, 37.5], [-6.65, 37.75], [-6.68, 37.82], [-7.03, 37.97], [-7.18, 38.32], [-7.3, 38.38], [-7.35, 38.25], [-7.25, 38.0], [-7.47, 37.47], [-8.0, 37.25], [-8.53, 37.47], [-8.68, 37.82], [-9.03, 37.97], [-9.25, 38.5]]]]}, "2013-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.03, 41.03], [-7.68, 41.18], [-7.65, 41.25], [-7.75, 41.5], [-7.65, 41.75], [-7.75, 42.0], [-7.53, 42.53], [-7.18, 42.68], [-7.03, 43.03], [-6.5, 43.25], [-6.25, 43.15], [-6.0, 43.25], [-5.47, 43.03], [-5.32, 42.68], [-4.97, 42.53], [-4.82, 42.18], [-4.75, 42.15], [-4.5, 42.25], [-4.25, 42.15], [-4.0, 42.25], [-3.47, 42.03], [-3.32, 41.68], [-3.25, 41.65], [-3.0, 41.75], [-2.47, 41.53], [-2.25, 41.0], [-2.35, 40.75], [-2.25, 40.5], [-2.35, 40.25], [-2.32, 40.18], [-1.97, 40.03], [-1.75, 39.5], [-1.96, 39.0], [-1.75, 38.5], [-1.97, 37.97], [-2.32, 37.82], [-2.47, 37.47], [-2.82, 37.32], [-2.97, 36.97], [-3.5, 36.75], [-3.75, 36.85], [-3.82, 36.82], [-3.97, 36.47], [-4.5, 36.25], [-5.03, 36.47], 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"Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8530593836462645, -5.031389576978528, -6.096551925798695, -4.840230383831569]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.282780976071024, -7.1640876872396575, -7.590023728864082, -6.084033469949929]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3508048368006715, -1.9718018072414552, -2.4164984169560357, -1.8939396623980016]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5044097542236499, -2.787542210624957, -3.005085179650236, -2.781876479915277]}}