{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:43:49.634857", "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-Jan-07_to_2010-Jan-09_14.5_-13.5"}, "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": 2010010000262}, "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 07 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 2010"}, "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": 134203.35230008003}, "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": ["Angola"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-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": -13.5}, "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": 14.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "14.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 12.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.75}, "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": -13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -14.97], [12.32, -14.82], [12.46, -14.5], [12.25, -14.0], [12.47, -13.47], [12.82, -13.32], [12.97, -12.97], [13.5, -12.75], [13.75, -12.85], [14.0, -12.75], [14.25, -12.85], [14.5, -12.75], [14.75, -12.85], [15.0, -12.75], [15.25, -12.85], [15.5, -12.75], [16.03, -12.97], [16.25, -13.5], [16.15, -13.75], [16.18, -13.82], [16.53, -13.97], [16.75, -14.5], [16.65, -14.75], [16.68, -14.82], [17.03, -14.97], [17.25, -15.5], [17.03, -16.03], [16.68, -16.18], [16.65, -16.25], [16.75, -16.5], [16.53, -17.03], [16.0, -17.25], [15.75, -17.15], [15.5, -17.25], [15.25, -17.15], [15.18, -17.18], [15.03, -17.53], [14.5, -17.75], [14.25, -17.65], [14.0, -17.75], [13.47, -17.53], [13.32, -17.18], [12.97, -17.03], [12.82, -16.68], [12.75, -16.65], [12.5, -16.75], [11.97, -16.53], [11.75, -16.0], [11.85, -15.75], [11.75, -15.5], [11.97, -14.97]]]]}, "2010-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -14.97], [12.32, -14.82], [12.46, -14.5], [12.25, -14.0], [12.47, -13.47], [12.82, -13.32], [12.97, -12.97], [13.5, -12.75], [13.75, -12.85], [14.0, -12.75], [14.25, -12.85], [14.5, -12.75], [14.75, -12.85], [15.0, -12.75], [15.25, -12.85], [15.5, -12.75], [16.03, -12.97], [16.25, -13.5], [16.15, -13.75], [16.18, -13.82], [16.53, -13.97], [16.75, -14.5], [16.65, -14.75], [16.68, -14.82], [17.03, -14.97], [17.25, -15.5], [17.03, -16.03], [16.68, -16.18], [16.65, -16.25], [16.75, -16.5], [16.53, -17.03], [16.0, -17.25], [15.75, -17.15], [15.5, -17.25], [15.25, -17.15], [15.18, -17.18], [15.03, -17.53], [14.5, -17.75], [14.25, -17.65], [14.0, -17.75], [13.47, -17.53], [13.32, -17.18], [12.97, -17.03], [12.82, -16.68], [12.75, -16.65], [12.5, -16.75], [11.97, -16.53], [11.75, -16.0], [11.85, -15.75], [11.75, -15.5], [11.97, -14.97]]]]}, "2010-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -14.97], [12.32, -14.82], [12.46, -14.5], [12.25, -14.0], [12.47, -13.47], [12.82, -13.32], [12.97, -12.97], [13.5, -12.75], [13.75, -12.85], [14.0, -12.75], [14.25, -12.85], [14.5, -12.75], [14.75, -12.85], [15.0, -12.75], [15.25, -12.85], [15.5, -12.75], [16.03, -12.97], [16.25, -13.5], [16.15, -13.75], [16.18, -13.82], [16.53, -13.97], [16.75, -14.5], [16.65, -14.75], [16.68, -14.82], [17.03, -14.97], [17.25, -15.5], [17.03, -16.03], [16.68, -16.18], [16.65, -16.25], [16.75, -16.5], [16.53, -17.03], [16.0, -17.25], [15.75, -17.15], [15.5, -17.25], [15.25, -17.15], [15.18, -17.18], [15.03, -17.53], [14.5, -17.75], [14.25, -17.65], [14.0, -17.75], [13.47, -17.53], [13.32, -17.18], [12.97, -17.03], [12.82, -16.68], [12.75, -16.65], [12.5, -16.75], [11.97, -16.53], [11.75, -16.0], [11.85, -15.75], [11.75, -15.5], [11.97, -14.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.752864980426068}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9197667312924933}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.053701070942964, 19.387889410360117, 20.057496674725144]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.74577353995852, 15.931272570960687, 16.730295441864598]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7254056959271704, -3.346303670313734, -2.687590827636575]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.218940591712794, -4.752864980426068, -4.00935879591151]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.624146485582082, -2.0309690386995847, -1.6129784281543424]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.152680989063166, -2.9627385492874905, -2.221248767788357]}}