{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:47.392993", "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": "2015-Apr-23_to_2015-Apr-25_36.5_33.5"}, "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": 2015040000875}, "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": "April 23 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 25 2015"}, "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": 92392.05487428347}, "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": ["Iraq", "Jordan", "Saudi Arabia", "Syria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "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": 33.5}, "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": 36.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, 32.97], [35.75, 33.5], [35.97, 34.03], [36.5, 34.25], 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34.18], [37.35, 34.25], [37.25, 34.5], [37.47, 35.03], [37.82, 35.18], [37.85, 35.25], [37.75, 35.5], [37.97, 36.03], [38.5, 36.25], [38.75, 36.15], [39.0, 36.25], [39.25, 36.15], [39.5, 36.25], [40.03, 36.03], [40.18, 35.68], [40.25, 35.65], [40.5, 35.75], [41.03, 35.53], [41.25, 35.0], [41.03, 34.47], [40.68, 34.32], [40.65, 34.25], [40.75, 34.0], [40.65, 33.75], [40.75, 33.5], [40.65, 33.25], [40.75, 33.0], [40.53, 32.47], [40.18, 32.32], [40.15, 32.25], [40.25, 32.0], [40.03, 31.47], [39.5, 31.25], [39.25, 31.35], [39.0, 31.25], [38.47, 31.47], [38.25, 32.0], [38.35, 32.25], [38.32, 32.32], [38.25, 32.35], [38.0, 32.25], [37.75, 32.35], [37.5, 32.25], [36.97, 32.47], [36.82, 32.82], [36.75, 32.85], [36.5, 32.75], [35.97, 32.97]]]]}, "2015-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, 32.97], [35.75, 33.5], [35.97, 34.03], [36.5, 34.25], [36.75, 34.15], [37.0, 34.25], [37.25, 34.15], [37.32, 34.18], [37.35, 34.25], [37.25, 34.5], [37.47, 35.03], [37.82, 35.18], [37.85, 35.25], [37.75, 35.5], [37.97, 36.03], [38.5, 36.25], [38.75, 36.15], [39.0, 36.25], [39.25, 36.15], [39.5, 36.25], [40.03, 36.03], [40.18, 35.68], [40.25, 35.65], [40.5, 35.75], [41.03, 35.53], [41.25, 35.0], [41.03, 34.47], [40.68, 34.32], [40.65, 34.25], [40.75, 34.0], [40.65, 33.75], [40.75, 33.5], [40.65, 33.25], [40.75, 33.0], [40.53, 32.47], [40.18, 32.32], [40.15, 32.25], [40.25, 32.0], [40.03, 31.47], [39.5, 31.25], [39.25, 31.35], [39.0, 31.25], [38.47, 31.47], [38.25, 32.0], [38.35, 32.25], [38.32, 32.32], [38.25, 32.35], [38.0, 32.25], [37.75, 32.35], [37.5, 32.25], [36.97, 32.47], [36.82, 32.82], [36.75, 32.85], [36.5, 32.75], [35.97, 32.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.070866576347612}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.117621102749587}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.216900181597111, 12.181909311357117, 14.385841511847275]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.200755472725348, 10.282712684333205, 12.772056372760858]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.989934764623637, -7.153535947263807, -5.209392596361322]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.748125652723502, -8.070866576347612, -6.055118525617786]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.53768101480939, -1.8497231534356868, -1.37007733204182]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.009352351126251, -2.030220098174143, -1.5706630779593513]}}