{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:42.955180", "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-Jun-29_to_2012-Jul-02_2.0_19.0"}, "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": 2012060001479}, "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": "June 29 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 02 2012"}, "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": 175080.37798389673}, "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", "Mali"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 19.0}, "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": 362.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "2.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 354.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 362.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.25, 19.5], [-2.03, 20.03], [-1.68, 20.18], [-1.53, 20.53], [-1.0, 20.75], [-0.75, 20.65], [-0.5, 20.75], [-0.25, 20.65], [0.0, 20.75], [0.25, 20.65], [0.32, 20.68], [0.47, 21.03], [1.0, 21.25], [1.5, 21.04], [2.0, 21.25], [2.25, 21.15], [2.5, 21.25], [3.03, 21.03], [3.25, 20.5], [3.15, 20.25], [3.25, 20.0], [3.15, 19.75], [3.25, 19.5], [3.15, 19.25], [3.25, 19.0], [3.03, 18.47], [2.68, 18.32], [2.53, 17.97], [2.0, 17.75], [1.7, 17.88], [1.53, 17.47], [1.0, 17.25], [0.5, 17.46], [0.18, 17.32], [0.03, 16.97], [-0.5, 16.75], [-1.03, 16.97], [-1.18, 17.32], [-1.53, 17.47], [-1.75, 18.0], [-1.54, 18.5], [-1.68, 18.82], [-2.03, 18.97], [-2.25, 19.5]]]]}, "2012-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.53, 18.47], [-5.75, 19.0], [-5.53, 19.53], [-5.0, 19.75], [-4.75, 19.65], [-4.68, 19.68], [-4.53, 20.03], [-4.0, 20.25], [-3.75, 20.15], [-3.68, 20.18], [-3.53, 20.53], [-3.0, 20.75], [-2.75, 20.65], [-2.68, 20.68], [-2.53, 21.03], [-2.0, 21.25], [-1.75, 21.15], [-1.5, 21.25], [-0.97, 21.03], [-0.82, 20.68], [-0.75, 20.65], [-0.5, 20.75], [-0.25, 20.65], [0.0, 20.75], [0.25, 20.65], [0.32, 20.68], [0.47, 21.03], [1.0, 21.25], [1.5, 21.04], [2.0, 21.25], [2.25, 21.15], [2.5, 21.25], [3.03, 21.03], [3.25, 20.5], [3.15, 20.25], [3.25, 20.0], [3.15, 19.75], [3.25, 19.5], [3.15, 19.25], [3.25, 19.0], [3.03, 18.47], [2.68, 18.32], [2.53, 17.97], [2.0, 17.75], [1.7, 17.88], [1.53, 17.47], [1.0, 17.25], [0.5, 17.46], [0.18, 17.32], [0.03, 16.97], [-0.5, 16.75], [-1.03, 16.97], [-1.18, 17.32], [-1.53, 17.47], [-1.75, 18.0], [-1.97, 17.47], [-2.5, 17.25], [-2.75, 17.35], [-3.0, 17.25], [-3.53, 17.47], [-3.68, 17.82], [-4.03, 17.97], [-4.18, 18.32], [-4.25, 18.35], [-4.5, 18.25], [-4.75, 18.35], [-5.0, 18.25], [-5.53, 18.47]], [[-1.62, 18.3], [-1.8, 18.38], [-1.85, 18.25], [-1.75, 18.0], [-1.62, 18.3]]]]}, "2012-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.53, 18.47], [-5.75, 19.0], [-5.53, 19.53], [-5.0, 19.75], [-4.75, 19.65], [-4.68, 19.68], [-4.53, 20.03], [-4.0, 20.25], [-3.75, 20.15], [-3.68, 20.18], [-3.53, 20.53], [-3.0, 20.75], [-2.75, 20.65], [-2.68, 20.68], [-2.53, 21.03], [-2.0, 21.25], [-1.75, 21.15], [-1.5, 21.25], [-0.97, 21.03], [-0.82, 20.68], [-0.75, 20.65], [-0.5, 20.75], [-0.25, 20.65], [0.0, 20.75], [0.25, 20.65], [0.32, 20.68], [0.47, 21.03], [1.0, 21.25], [1.5, 21.04], [2.0, 21.25], [2.25, 21.15], [2.5, 21.25], [3.03, 21.03], [3.25, 20.5], [3.15, 20.25], [3.25, 20.0], [3.15, 19.75], [3.25, 19.5], [3.15, 19.25], [3.25, 19.0], [3.03, 18.47], [2.68, 18.32], [2.53, 17.97], [2.0, 17.75], [1.7, 17.88], [1.53, 17.47], [1.0, 17.25], [0.5, 17.46], [0.18, 17.32], [0.03, 16.97], [-0.5, 16.75], [-1.03, 16.97], [-1.18, 17.32], [-1.53, 17.47], [-1.75, 18.0], [-1.97, 17.47], [-2.5, 17.25], [-2.75, 17.35], [-3.0, 17.25], [-3.53, 17.47], [-3.68, 17.82], [-4.03, 17.97], [-4.18, 18.32], [-4.25, 18.35], [-4.5, 18.25], [-4.75, 18.35], [-5.0, 18.25], [-5.53, 18.47]], [[-1.62, 18.3], [-1.8, 18.38], [-1.85, 18.25], [-1.75, 18.0], [-1.62, 18.3]]]]}, "2012-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.53, 18.47], [-5.75, 19.0], [-5.53, 19.53], [-5.0, 19.75], [-4.75, 19.65], [-4.68, 19.68], [-4.53, 20.03], [-4.0, 20.25], [-3.75, 20.15], [-3.68, 20.18], [-3.53, 20.53], [-3.0, 20.75], [-2.75, 20.65], [-2.68, 20.68], [-2.53, 21.03], [-2.0, 21.25], [-1.75, 21.15], [-1.5, 21.25], [-0.97, 21.03], [-0.75, 20.5], [-0.85, 20.25], [-0.75, 20.0], [-0.87, 19.7], [-0.47, 19.53], [-0.32, 19.18], [0.03, 19.03], [0.18, 18.68], [0.43, 18.57], [0.25, 19.0], [0.47, 19.53], [1.0, 19.75], [1.5, 19.54], [2.0, 19.75], [2.53, 19.53], [2.75, 19.0], [2.65, 18.75], [2.75, 18.5], [2.53, 17.97], [2.0, 17.75], [1.47, 17.97], [1.3, 18.38], [1.0, 18.25], [0.57, 18.43], [0.75, 18.0], [0.53, 17.47], [0.0, 17.25], [-0.25, 17.35], [-0.5, 17.25], [-0.75, 17.35], [-1.0, 17.25], [-1.53, 17.47], [-1.75, 18.0], [-1.97, 17.47], [-2.5, 17.25], [-2.75, 17.35], [-3.0, 17.25], [-3.53, 17.47], [-3.68, 17.82], [-4.03, 17.97], [-4.18, 18.32], [-4.25, 18.35], [-4.5, 18.25], [-4.75, 18.35], [-5.0, 18.25], [-5.53, 18.47]], [[-1.62, 18.3], [-1.8, 18.38], [-1.85, 18.25], [-1.75, 18.0], [-1.62, 18.3]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6621224013535425}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9792706810427023}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.315821044262634, 33.54137356276266, 33.4794830060917, 33.55894275704077]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.849801476245943, 31.77201475157284, 30.93857233027512, 32.36304774120191]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.113294548439994, -1.9171669936830882, -2.0178400401497423, -1.8565757721779486]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.580769224932567, -2.996676363332938, -3.6621224013535425, -2.7695448448391744]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6884415799715373, -1.6521940217187179, -1.748849447870841, -1.679508609403319]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0278441926656017, -2.4775176452334953, -2.9404893177696922, -2.5609947319280657]}}