{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:55.906099", "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": "2016-Mar-31_to_2016-Apr-04_54.0_27.5"}, "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": 2016030000779}, "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": "March 31 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 04 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 81420.54186339749}, "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": ["Arabian-Peninsula", "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": ["Persian Gulf"]}, "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": 27.5}, "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": 54.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 50.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 54.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.0, 29.75], [51.53, 29.53], [51.75, 29.0], [51.53, 28.47], [51.0, 28.25], [50.47, 28.47], [50.25, 29.0], [50.47, 29.53], [51.0, 29.75]]]]}, "2016-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.97, 31.53], [50.5, 31.75], [51.03, 31.53], [51.18, 31.18], [51.25, 31.15], [51.5, 31.25], [52.03, 31.03], [52.18, 30.68], [52.25, 30.65], [52.5, 30.75], [53.03, 30.53], [53.25, 30.0], [53.04, 29.5], [53.18, 29.18], [53.53, 29.03], [53.75, 28.5], [53.63, 28.2], [53.75, 28.15], [53.82, 28.18], [53.97, 28.53], [54.5, 28.75], [55.03, 28.53], [55.25, 28.0], [55.03, 27.47], [54.68, 27.32], [54.65, 27.25], [54.75, 27.0], [54.54, 26.5], [54.75, 26.0], [54.53, 25.47], [54.0, 25.25], [53.47, 25.47], [53.32, 25.82], [52.97, 25.97], [52.82, 26.32], [52.47, 26.47], [52.32, 26.82], [51.97, 26.97], [51.82, 27.32], [51.47, 27.47], [51.32, 27.82], [50.97, 27.97], [50.82, 28.32], [50.47, 28.47], [50.25, 29.0], [50.46, 29.5], [50.32, 29.82], [49.97, 29.97], [49.75, 30.5], [49.85, 30.75], [49.75, 31.0], [49.97, 31.53]]]]}, 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31.53], [50.5, 31.75], [51.03, 31.53], [51.18, 31.18], [51.25, 31.15], [51.5, 31.25], [52.03, 31.03], [52.18, 30.68], [52.25, 30.65], [52.5, 30.75], [53.03, 30.53], [53.25, 30.0], [53.04, 29.5], [53.18, 29.18], [53.53, 29.03], [53.75, 28.5], [53.63, 28.2], [53.75, 28.15], [53.82, 28.18], [53.97, 28.53], [54.5, 28.75], [55.03, 28.53], [55.25, 28.0], [55.15, 27.75], [55.25, 27.5], [55.15, 27.25], [55.25, 27.0], [55.03, 26.47], [54.63, 26.3], [54.75, 26.0], [54.53, 25.47], [54.0, 25.25], [53.47, 25.47], [53.32, 25.82], [52.97, 25.97], [52.82, 26.32], [52.47, 26.47], [52.32, 26.82], [51.97, 26.97], [51.82, 27.32], [51.47, 27.47], [51.32, 27.82], [50.97, 27.97], [50.75, 28.5], [50.85, 28.75], [50.75, 29.0], [50.85, 29.25], [50.82, 29.32], [50.47, 29.47], [50.32, 29.82], [49.97, 29.97], [49.75, 30.5], [49.85, 30.75], [49.75, 31.0], [49.97, 31.53]]]]}, "2016-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.0, 28.25], [53.5, 28.04], [54.0, 28.25], [54.25, 28.15], 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14.881567675992699, 15.527832479991673, 17.68328820028728]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.20058745084242, 4.131031513984851, 4.467347060517511, 6.073180816734123, 10.814554011694156]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.6314886498286114, -4.59752453974359, -4.570272176165349, -3.9770597658583515, -4.091998525714107]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6314886498286114, -6.099647888895618, -5.865132815556592, -5.152572141831627, -4.914932115060253]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5597739042551442, -1.7453254159670575, -1.7645025708275341, 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