{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:23.949881", "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": "2013-May-30_to_2013-Jun-06_54.5_22.5"}, "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": 2013050001241}, "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 30 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 06 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 60089.44041723049}, "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": ["Saudi Arabia", "United Arab Emirates"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 22.5}, "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": 54.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 51.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 55.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.47, 23.03], [51.82, 23.18], [51.97, 23.53], [52.5, 23.75], 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21.82], [53.75, 21.85], [53.5, 21.75], [53.25, 21.85], [53.18, 21.82], [53.03, 21.47], [52.5, 21.25], [52.25, 21.35], [52.0, 21.25], [51.47, 21.47], [51.25, 22.0], [51.35, 22.25], [51.25, 22.5], [51.47, 23.03]]]]}, "2013-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.47, 23.03], [51.82, 23.18], [51.97, 23.53], [52.5, 23.75], [52.75, 23.65], [53.0, 23.75], [53.25, 23.65], [53.32, 23.68], [53.47, 24.03], [54.0, 24.25], [54.53, 24.03], [54.75, 23.5], [54.65, 23.25], [54.68, 23.18], [54.75, 23.15], [55.0, 23.25], [55.53, 23.03], [55.75, 22.5], [55.65, 22.25], [55.75, 22.0], [55.65, 21.75], [55.75, 21.5], [55.65, 21.25], [55.75, 21.0], [55.53, 20.47], [55.0, 20.25], [54.75, 20.35], [54.5, 20.25], [53.97, 20.47], [53.75, 21.0], [53.85, 21.25], [53.75, 21.5], [53.85, 21.75], [53.82, 21.82], [53.75, 21.85], [53.5, 21.75], [53.25, 21.85], [53.18, 21.82], [53.03, 21.47], [52.5, 21.25], [52.25, 21.35], [52.0, 21.25], [51.47, 21.47], [51.25, 22.0], [51.35, 22.25], 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"description": "The daily evolution of mean t2m.", "value": [32.3961283461976, 31.59094379987431, 31.691464410734284, 33.457868757124686, 33.047322769496986, 33.693197792830176, 33.62263876661024, 31.62309596845546]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.45652910736004, 29.904259842902604, 30.322873282813816, 33.05935709160116, 32.296224316454925, 33.693197792830176, 33.62263876661024, 31.62309596845546]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6876395437245386, -3.8519198068090823, -3.8368267119069004, -2.492076866616486, -2.879653489090721, -2.221419427145406, -2.3494813838962614, -4.37610995703983]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.070184972041602, -4.47945285548019, -4.633477302415713, 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