{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:01.682516", "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": "2010-Nov-02_to_2010-Nov-06_357.0_30.0"}, "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": 2010110000174}, "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 02 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 06 2010"}, "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": 102010.26177722123}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 30.0}, "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": 357.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 359.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.65, 30.25], [-4.75, 30.5], [-4.53, 31.03], [-4.18, 31.18], [-4.03, 31.53], [-3.5, 31.75], [-3.0, 31.54], [-2.5, 31.75], [-2.25, 31.65], [-2.0, 31.75], [-1.47, 31.53], [-1.32, 31.18], [-1.25, 31.15], [-1.0, 31.25], [-0.75, 31.15], [-0.5, 31.25], [0.03, 31.03], [0.25, 30.5], [0.15, 30.25], [0.25, 30.0], [0.15, 29.75], [0.25, 29.5], [0.03, 28.97], [-0.32, 28.82], [-0.47, 28.47], [-0.82, 28.32], [-0.97, 27.97], [-1.5, 27.75], [-1.75, 27.85], [-2.0, 27.75], [-2.53, 27.97], [-2.68, 28.32], [-2.75, 28.35], [-3.0, 28.25], [-3.25, 28.35], [-3.5, 28.25], [-4.03, 28.47], [-4.18, 28.82], [-4.53, 28.97], [-4.75, 29.5], [-4.65, 29.75], [-4.75, 30.0], [-4.65, 30.25]]]]}, "2010-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.65, 30.25], [-4.75, 30.5], [-4.53, 31.03], [-4.18, 31.18], [-4.03, 31.53], [-3.5, 31.75], [-3.0, 31.54], [-2.5, 31.75], [-2.25, 31.65], [-2.0, 31.75], [-1.47, 31.53], [-1.32, 31.18], [-1.25, 31.15], [-1.0, 31.25], [-0.75, 31.15], [-0.5, 31.25], [0.03, 31.03], [0.25, 30.5], [0.15, 30.25], [0.25, 30.0], [0.15, 29.75], [0.25, 29.5], [0.04, 29.0], [0.25, 28.5], [0.03, 27.97], [-0.5, 27.75], [-0.75, 27.85], [-1.0, 27.75], [-1.25, 27.85], [-1.5, 27.75], [-1.75, 27.85], [-1.82, 27.82], [-1.97, 27.47], [-2.5, 27.25], [-3.03, 27.47], [-3.25, 28.0], [-3.12, 28.3], [-3.25, 28.35], [-3.5, 28.25], [-4.03, 28.47], [-4.18, 28.82], [-4.53, 28.97], [-4.75, 29.5], [-4.65, 29.75], [-4.75, 30.0], [-4.65, 30.25]]]]}, "2010-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.65, 30.25], [-4.75, 30.5], [-4.53, 31.03], [-4.18, 31.18], [-4.03, 31.53], [-3.5, 31.75], [-3.0, 31.54], [-2.5, 31.75], [-2.25, 31.65], [-2.0, 31.75], [-1.47, 31.53], [-1.32, 31.18], [-1.25, 31.15], [-1.0, 31.25], [-0.75, 31.15], [-0.5, 31.25], [0.03, 31.03], [0.25, 30.5], [0.15, 30.25], [0.25, 30.0], [0.15, 29.75], [0.25, 29.5], [0.04, 29.0], [0.25, 28.5], [0.03, 27.97], [-0.5, 27.75], [-0.75, 27.85], [-1.0, 27.75], [-1.25, 27.85], [-1.5, 27.75], [-1.75, 27.85], [-1.82, 27.82], [-1.97, 27.47], [-2.5, 27.25], [-3.03, 27.47], [-3.25, 28.0], [-3.12, 28.3], [-3.25, 28.35], [-3.5, 28.25], [-4.03, 28.47], [-4.18, 28.82], [-4.53, 28.97], [-4.75, 29.5], [-4.65, 29.75], [-4.75, 30.0], [-4.65, 30.25]]]]}, "2010-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.65, 30.25], [-4.75, 30.5], [-4.53, 31.03], [-4.0, 31.25], [-3.5, 31.04], [-3.0, 31.25], [-2.75, 31.15], [-2.5, 31.25], [-2.25, 31.15], [-2.0, 31.25], [-1.75, 31.15], [-1.5, 31.25], [-0.97, 31.03], [-0.82, 30.68], [-0.47, 30.53], [-0.25, 30.0], [-0.35, 29.75], [-0.25, 29.5], [-0.35, 29.25], [-0.32, 29.18], [0.03, 29.03], [0.25, 28.5], [0.03, 27.97], [-0.5, 27.75], [-0.75, 27.85], [-1.0, 27.75], [-1.25, 27.85], [-1.5, 27.75], [-1.75, 27.85], [-1.82, 27.82], [-1.97, 27.47], [-2.5, 27.25], [-3.03, 27.47], [-3.25, 28.0], [-3.12, 28.3], [-3.53, 28.47], [-3.68, 28.82], [-3.75, 28.85], [-4.0, 28.75], [-4.53, 28.97], [-4.75, 29.5], [-4.65, 29.75], [-4.75, 30.0], [-4.65, 30.25]]]]}, "2010-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.03, 30.53], [-3.68, 30.68], [-3.53, 31.03], [-3.0, 31.25], [-2.75, 31.15], [-2.5, 31.25], [-2.25, 31.15], [-2.0, 31.25], [-1.75, 31.15], [-1.5, 31.25], [-0.97, 31.03], [-0.82, 30.68], [-0.47, 30.53], [-0.25, 30.0], [-0.35, 29.75], [-0.25, 29.5], [-0.35, 29.25], [-0.32, 29.18], [0.03, 29.03], [0.25, 28.5], [0.03, 27.97], [-0.5, 27.75], [-0.75, 27.85], [-1.0, 27.75], [-1.25, 27.85], [-1.5, 27.75], [-1.75, 27.85], [-1.82, 27.82], [-1.97, 27.47], [-2.5, 27.25], [-3.03, 27.47], [-3.25, 28.0], [-3.12, 28.3], [-3.53, 28.47], [-3.68, 28.82], [-4.03, 28.97], [-4.25, 29.5], [-4.15, 29.75], [-4.25, 30.0], [-4.03, 30.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.356016912064945}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.004768583044958}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.626075587127332, 16.045490464043837, 16.12107610581603, 16.318028570559534, 15.581892840276907]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.99983533178073, 14.532393885948409, 14.721900736556506, 14.840639034468722, 13.897651364422927]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.781845445958496, -4.323459174240904, -4.02109550886607, -3.754203969028087, -4.098289301359646]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.56177174725957, -5.356016912064945, -4.974776620594014, -4.489759173672951, -4.529903670049748]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5278440438528065, -1.696588511183356, -1.537758269632366, -1.4117421384691045, -1.4965606775319054]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.745983960855879, -2.0519799123688762, -1.7913658335512885, -1.6052006292113843, -1.6794442629536954]}}