{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:19.252179", "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-Jan-11_to_2012-Jan-13_29.0_31.5"}, "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": 2012010000650}, "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": "January 11 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 13 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": 88555.13347469442}, "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": ["Egypt"]}, "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": ["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": ["Mediterranean Sea - Eastern Basin"]}, "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": 31.5}, "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": 29.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "29.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 31.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 34.53], [27.0, 34.75], [27.25, 34.65], [27.5, 34.75], [27.75, 34.65], [28.0, 34.75], [28.25, 34.65], [28.5, 34.75], [29.03, 34.53], [29.18, 34.18], [29.53, 34.03], [29.68, 33.68], [30.03, 33.53], [30.18, 33.18], [30.53, 33.03], [30.68, 32.68], [30.75, 32.65], [31.0, 32.75], [31.53, 32.53], [31.75, 32.0], [31.65, 31.75], [31.75, 31.5], [31.53, 30.97], [31.0, 30.75], [30.75, 30.85], [30.5, 30.75], [30.25, 30.85], [30.0, 30.75], [29.75, 30.85], [29.68, 30.82], [29.53, 30.47], [29.0, 30.25], [28.47, 30.47], [28.32, 30.82], [27.97, 30.97], [27.82, 31.32], [27.47, 31.47], [27.32, 31.82], [26.97, 31.97], [26.75, 32.5], [26.85, 32.75], [26.82, 32.82], [26.47, 32.97], [26.25, 33.5], [26.35, 33.75], [26.25, 34.0], [26.47, 34.53]]]]}, "2012-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 34.53], [27.0, 34.75], [27.25, 34.65], [27.5, 34.75], [27.75, 34.65], [28.0, 34.75], [28.25, 34.65], [28.5, 34.75], [29.03, 34.53], [29.18, 34.18], [29.53, 34.03], [29.68, 33.68], [30.03, 33.53], [30.18, 33.18], [30.53, 33.03], [30.68, 32.68], [30.75, 32.65], [31.0, 32.75], [31.53, 32.53], [31.75, 32.0], [31.65, 31.75], [31.75, 31.5], [31.53, 30.97], [31.0, 30.75], [30.75, 30.85], [30.5, 30.75], [30.25, 30.85], [30.0, 30.75], [29.75, 30.85], [29.68, 30.82], [29.53, 30.47], [29.0, 30.25], [28.47, 30.47], [28.32, 30.82], [27.97, 30.97], [27.82, 31.32], [27.47, 31.47], [27.32, 31.82], [26.97, 31.97], [26.75, 32.5], [26.85, 32.75], [26.82, 32.82], [26.47, 32.97], [26.25, 33.5], [26.35, 33.75], [26.25, 34.0], [26.47, 34.53]]]]}, "2012-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 34.53], [27.0, 34.75], [27.25, 34.65], [27.5, 34.75], [27.75, 34.65], [28.0, 34.75], [28.25, 34.65], [28.5, 34.75], [29.03, 34.53], [29.18, 34.18], [29.53, 34.03], [29.68, 33.68], [30.03, 33.53], [30.18, 33.18], [30.53, 33.03], [30.68, 32.68], [30.75, 32.65], [31.0, 32.75], [31.53, 32.53], [31.75, 32.0], [31.65, 31.75], [31.75, 31.5], [31.53, 30.97], [31.0, 30.75], [30.75, 30.85], [30.5, 30.75], [30.25, 30.85], [30.0, 30.75], [29.75, 30.85], [29.68, 30.82], [29.53, 30.47], [29.0, 30.25], [28.47, 30.47], [28.32, 30.82], [27.97, 30.97], [27.82, 31.32], [27.47, 31.47], [27.32, 31.82], [26.97, 31.97], [26.75, 32.5], [26.85, 32.75], [26.82, 32.82], [26.47, 32.97], [26.25, 33.5], [26.35, 33.75], [26.25, 34.0], [26.47, 34.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.262116162455243}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.561598347368329}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.76999718220759, 12.535951985234988, 13.318203002110977]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.67554714408999, 11.932444313497228, 12.58396704640893]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.612089646803584, -2.9067005097912197, -2.166004885510183]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2027242127077216, -3.262116162455243, -2.484325047820846]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6554297576159958, -1.9786423906978607, -1.542880559673468]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9083823670059374, -2.2845477285889824, -1.7052464258083506]}}