{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:54.587931", "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": "2011-Jul-09_to_2011-Jul-12_54.5_30.0"}, "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": 2011070000670}, "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": "July 09 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2011"}, "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": 77807.96014812552}, "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": ["Iran"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "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": 30.0}, "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": 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": 53.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 57.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.53, 28.53], [56.75, 28.0], [56.53, 27.47], [56.0, 27.25], 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31.25], [55.8, 31.13], [55.97, 31.53], [56.5, 31.75], [57.03, 31.53], [57.18, 31.18], [57.53, 31.03], [57.75, 30.5], [57.65, 30.25], [57.68, 30.18], [58.03, 30.03], [58.25, 29.5], [58.03, 28.97], [57.68, 28.82], [57.53, 28.47], [57.18, 28.32], [57.15, 28.25], [57.25, 28.0], [57.03, 27.47], [56.5, 27.25], [56.25, 27.35], [56.0, 27.25], [55.75, 27.35], [55.5, 27.25], [54.97, 27.47], [54.75, 28.0], [54.93, 28.43], [54.5, 28.25], [54.25, 28.35], [54.0, 28.25], [53.47, 28.47], [53.25, 29.0], [53.47, 29.53], [53.82, 29.68], [53.85, 29.75], [53.75, 30.0], [53.85, 30.25], [53.82, 30.32], [53.75, 30.35], [53.5, 30.25], [52.97, 30.47], [52.75, 31.0], [52.97, 31.53], [53.32, 31.68], [53.47, 32.03], [54.0, 32.25]], [[55.07, 28.57], [55.32, 28.68], [55.35, 28.75], [55.32, 28.82], [55.2, 28.88], [55.07, 28.57]]]]}, "2011-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.97, 30.47], [52.75, 31.0], [52.97, 31.53], [53.5, 31.75], [53.75, 31.65], [54.0, 31.75], [54.53, 31.53], 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"value": [26.484617561281254, 26.246489083912934, 26.798004640179272, 28.691643268593566]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.74949337682375, 21.182463457709105, 21.89991065000646, 24.803081842748213]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3947030388037875, -3.273803568542476, -2.6635924905437807, -2.0484206492765558]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.023335066766265, -4.224353697544927, -3.7814876009571776, -2.5578879793418423]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.511873929617686, -2.095967324591756, -1.6599516327058321, -1.3568317907177223]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0024798197713185, -2.6046155807914535, -2.1890998700333117, -1.4810998997590474]}}