{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:40.433677", "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-May-14_to_2010-May-16_358.0_29.0"}, "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": 2010050000454}, "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": "May 14 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 16 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": 135412.88948619875}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "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": 29.0}, "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": 358.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 356.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.54, 28.0], [-3.75, 28.5], [-3.65, 28.75], [-3.75, 29.0], [-3.53, 29.53], [-3.0, 29.75], [-2.75, 29.65], [-2.68, 29.68], [-2.65, 29.75], [-2.75, 30.0], [-2.53, 30.53], [-2.18, 30.68], [-2.03, 31.03], [-1.5, 31.25], [-1.25, 31.15], [-1.0, 31.25], [-0.75, 31.15], [-0.5, 31.25], [-0.25, 31.15], [0.0, 31.25], [0.25, 31.15], [0.5, 31.25], [0.75, 31.15], [1.0, 31.25], [1.53, 31.03], [1.75, 30.5], [1.53, 29.97], [1.18, 29.82], [1.15, 29.75], [1.25, 29.5], [1.04, 29.0], [1.25, 28.5], [1.15, 28.25], [1.25, 28.0], [1.03, 27.47], [0.68, 27.32], [0.53, 26.97], [0.0, 26.75], [-0.5, 26.96], [-0.82, 26.82], [-0.97, 26.47], [-1.5, 26.25], [-1.75, 26.35], [-2.0, 26.25], [-2.25, 26.35], [-2.5, 26.25], [-2.75, 26.35], [-3.0, 26.25], [-3.53, 26.47], [-3.75, 27.0], [-3.65, 27.25], [-3.75, 27.5], [-3.54, 28.0]]]]}, "2010-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.54, 28.0], [-3.75, 28.5], [-3.65, 28.75], [-3.75, 29.0], [-3.53, 29.53], [-3.0, 29.75], [-2.75, 29.65], [-2.68, 29.68], [-2.65, 29.75], [-2.75, 30.0], [-2.53, 30.53], [-2.18, 30.68], [-2.03, 31.03], [-1.5, 31.25], [-1.25, 31.15], [-1.0, 31.25], [-0.75, 31.15], [-0.5, 31.25], [-0.25, 31.15], [0.0, 31.25], [0.25, 31.15], [0.5, 31.25], [0.75, 31.15], [1.0, 31.25], [1.53, 31.03], [1.75, 30.5], [1.53, 29.97], [1.18, 29.82], [1.15, 29.75], [1.25, 29.5], [1.04, 29.0], [1.25, 28.5], [1.15, 28.25], [1.25, 28.0], [1.03, 27.47], [0.68, 27.32], [0.53, 26.97], [0.0, 26.75], [-0.5, 26.96], [-0.82, 26.82], [-0.97, 26.47], [-1.5, 26.25], [-1.75, 26.35], [-2.0, 26.25], [-2.25, 26.35], [-2.5, 26.25], [-2.75, 26.35], [-3.0, 26.25], [-3.53, 26.47], [-3.75, 27.0], [-3.65, 27.25], [-3.75, 27.5], [-3.54, 28.0]]]]}, "2010-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.54, 28.0], [-3.75, 28.5], [-3.65, 28.75], [-3.75, 29.0], [-3.53, 29.53], [-3.0, 29.75], [-2.75, 29.65], [-2.68, 29.68], [-2.65, 29.75], [-2.75, 30.0], [-2.53, 30.53], [-2.18, 30.68], [-2.03, 31.03], [-1.5, 31.25], [-1.25, 31.15], [-1.0, 31.25], [-0.75, 31.15], [-0.5, 31.25], [-0.25, 31.15], [0.0, 31.25], [0.25, 31.15], [0.5, 31.25], [0.75, 31.15], [1.0, 31.25], [1.53, 31.03], [1.75, 30.5], [1.53, 29.97], [1.18, 29.82], [1.15, 29.75], [1.25, 29.5], [1.04, 29.0], [1.25, 28.5], [1.15, 28.25], [1.25, 28.0], [1.03, 27.47], [0.68, 27.32], [0.53, 26.97], [0.0, 26.75], [-0.5, 26.96], [-0.82, 26.82], [-0.97, 26.47], [-1.5, 26.25], [-1.75, 26.35], [-2.0, 26.25], [-2.25, 26.35], [-2.5, 26.25], [-2.75, 26.35], [-3.0, 26.25], [-3.53, 26.47], [-3.75, 27.0], [-3.65, 27.25], [-3.75, 27.5], [-3.54, 28.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.803492703776385}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.775449067097614}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.116587499444165, 21.646051833237493, 24.258331551216884]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.78624461097189, 19.043570633601746, 21.80155614823292]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.537816656961936, -7.109567373091432, -4.678963171239473]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.673333583510271, -7.803492703776385, -5.435243194508416]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6826056738393549, -2.2242014217438077, -1.5162967445100535]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.013684182473703, -2.4188554737298684, -1.7385252582601292]}}