{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:43.174637", "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": "2014-Feb-17_to_2014-Feb-19_19.5_10.0"}, "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": 2014020000765}, "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": "February 17 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2014"}, "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": 51829.20482909042}, "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": ["Chad"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "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": 10.0}, "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": 19.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, 7.97], [16.25, 8.5], [16.47, 9.03], [17.0, 9.25], [17.25, 9.15], [17.32, 9.18], [17.35, 9.25], [17.32, 9.32], [16.97, 9.47], [16.75, 10.0], [16.97, 10.53], [17.5, 10.75], [17.75, 10.65], [18.0, 10.75], [18.25, 10.65], [18.32, 10.68], [18.47, 11.03], [19.0, 11.25], [19.53, 11.03], [19.68, 10.68], [19.75, 10.65], [20.0, 10.75], [20.53, 10.53], [20.75, 10.0], [20.53, 9.47], [20.18, 9.32], [20.03, 8.97], [19.68, 8.82], [19.53, 8.47], [19.0, 8.25], [18.75, 8.35], [18.68, 8.32], [18.53, 7.97], [18.0, 7.75], [17.75, 7.85], [17.5, 7.75], [17.25, 7.85], [17.0, 7.75], [16.47, 7.97]]]]}, "2014-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, 7.97], [16.25, 8.5], [16.47, 9.03], [17.0, 9.25], [17.25, 9.15], [17.32, 9.18], [17.35, 9.25], [17.32, 9.32], [16.97, 9.47], [16.75, 10.0], [16.97, 10.53], [17.5, 10.75], [17.75, 10.65], [18.0, 10.75], [18.25, 10.65], [18.32, 10.68], [18.47, 11.03], [19.0, 11.25], [19.53, 11.03], [19.68, 10.68], [19.75, 10.65], [20.0, 10.75], [20.53, 10.53], [20.75, 10.0], [20.53, 9.47], [20.18, 9.32], [20.03, 8.97], [19.68, 8.82], [19.53, 8.47], [19.0, 8.25], [18.75, 8.35], [18.68, 8.32], [18.53, 7.97], [18.0, 7.75], [17.75, 7.85], [17.5, 7.75], [17.25, 7.85], [17.0, 7.75], [16.47, 7.97]]]]}, "2014-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, 7.97], [16.25, 8.5], [16.47, 9.03], [17.0, 9.25], [17.25, 9.15], [17.32, 9.18], [17.35, 9.25], [17.32, 9.32], [16.97, 9.47], [16.75, 10.0], [16.97, 10.53], [17.5, 10.75], [17.75, 10.65], [18.0, 10.75], [18.25, 10.65], [18.32, 10.68], [18.47, 11.03], [19.0, 11.25], [19.53, 11.03], [19.68, 10.68], [19.75, 10.65], [20.0, 10.75], [20.53, 10.53], [20.75, 10.0], [20.53, 9.47], [20.18, 9.32], [20.03, 8.97], [19.68, 8.82], [19.53, 8.47], [19.0, 8.25], [18.75, 8.35], [18.68, 8.32], [18.53, 7.97], [18.0, 7.75], [17.75, 7.85], [17.5, 7.75], [17.25, 7.85], [17.0, 7.75], [16.47, 7.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.853817322741577}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0903861214667594}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.80458519842449, 25.735459214592197, 26.63800027853256]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.912444858755634, 24.776466798476008, 25.536120006104227]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1339342199196047, -3.4112836512504012, -2.725940493230272]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5454263499728427, -3.853817322741577, -3.0070706709373667]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.722201072797051, -1.8730681518974337, -1.4814617775825494]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8940159139917483, -2.0530836253731914, -1.5992594584990292]}}