{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:25.427318", "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": "2018-Apr-16_to_2018-Apr-19_290.0_6.0"}, "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": 2018040000772}, "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": "April 16 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 19 2018"}, "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": 70840.96960732515}, "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": ["Colombia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": 6.0}, "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": 290.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 288.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.03, 5.47], [-71.25, 6.0], [-71.03, 6.53], [-70.5, 6.75], [-70.25, 6.65], [-70.0, 6.75], [-69.75, 6.65], [-69.5, 6.75], [-69.25, 6.65], [-69.0, 6.75], [-68.47, 6.53], [-68.25, 6.0], [-68.47, 5.47], [-69.0, 5.25], [-69.25, 5.35], [-69.5, 5.25], [-69.75, 5.35], [-70.0, 5.25], [-70.25, 5.35], [-70.5, 5.25], [-71.03, 5.47]]]]}, "2018-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 5.5], [-71.53, 6.03], [-71.18, 6.18], [-71.03, 6.53], [-70.5, 6.75], [-70.25, 6.65], [-70.0, 6.75], [-69.75, 6.65], [-69.5, 6.75], [-69.25, 6.65], [-69.0, 6.75], [-68.47, 6.53], [-68.25, 6.0], [-68.35, 5.75], [-68.25, 5.5], [-68.35, 5.25], [-68.25, 5.0], [-68.35, 4.75], [-68.25, 4.5], [-68.47, 3.97], [-68.82, 3.82], [-68.85, 3.75], [-68.82, 3.68], [-68.47, 3.53], [-68.25, 3.0], [-68.47, 2.47], [-69.0, 2.25], [-69.25, 2.35], [-69.5, 2.25], [-69.75, 2.35], [-70.0, 2.25], [-70.53, 2.47], [-70.75, 3.0], [-70.65, 3.25], [-70.75, 3.5], [-70.65, 3.75], [-70.75, 4.0], [-70.65, 4.25], [-70.68, 4.32], [-71.03, 4.47], [-71.18, 4.82], [-71.53, 4.97], [-71.75, 5.5]]]]}, "2018-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 5.5], [-71.53, 6.03], [-71.18, 6.18], [-71.03, 6.53], [-70.5, 6.75], [-70.25, 6.65], [-70.0, 6.75], [-69.75, 6.65], [-69.5, 6.75], [-69.25, 6.65], [-69.0, 6.75], [-68.47, 6.53], [-68.25, 6.0], [-68.35, 5.75], [-68.25, 5.5], [-68.35, 5.25], [-68.25, 5.0], [-68.35, 4.75], [-68.25, 4.5], [-68.47, 3.97], [-68.82, 3.82], [-68.85, 3.75], [-68.82, 3.68], [-68.47, 3.53], [-68.25, 3.0], [-68.47, 2.47], [-69.0, 2.25], [-69.25, 2.35], [-69.5, 2.25], [-69.75, 2.35], [-70.0, 2.25], [-70.53, 2.47], [-70.75, 3.0], [-70.65, 3.25], [-70.75, 3.5], [-70.65, 3.75], [-70.75, 4.0], [-70.65, 4.25], [-70.68, 4.32], [-71.03, 4.47], [-71.18, 4.82], [-71.53, 4.97], [-71.75, 5.5]]]]}, "2018-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 5.5], [-71.53, 6.03], [-71.18, 6.18], [-71.03, 6.53], [-70.5, 6.75], [-70.25, 6.65], [-70.0, 6.75], [-69.75, 6.65], [-69.5, 6.75], [-69.25, 6.65], [-69.0, 6.75], [-68.47, 6.53], [-68.25, 6.0], [-68.35, 5.75], [-68.25, 5.5], [-68.35, 5.25], [-68.25, 5.0], [-68.35, 4.75], [-68.25, 4.5], [-68.47, 3.97], [-68.82, 3.82], [-68.85, 3.75], [-68.82, 3.68], [-68.47, 3.53], [-68.25, 3.0], [-68.47, 2.47], [-69.0, 2.25], [-69.25, 2.35], [-69.5, 2.25], [-69.75, 2.35], [-70.0, 2.25], [-70.53, 2.47], [-70.75, 3.0], [-70.65, 3.25], [-70.75, 3.5], [-70.65, 3.75], [-70.75, 4.0], [-70.65, 4.25], [-70.68, 4.32], [-71.03, 4.47], [-71.18, 4.82], [-71.53, 4.97], [-71.75, 5.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.644638948016052}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4604701301886875}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.51156592482664, 24.735963435965402, 24.35180939690821, 24.375875303099235]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.26725195398842, 23.84089935002595, 23.837670704480672, 23.268877856337383]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3571356985267897, -1.2482560276717733, -1.6045529964411422, -1.5465725719595644]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4446679866732097, -1.536095787530428, -2.644638948016052, -1.8453356351966477]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2289161561048456, -1.4406330906486182, -1.9020972149902111, -1.8763080189549148]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.336464286440831, -1.7132377518020634, -2.5977031871142766, -2.472950630958083]}}