{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:25.613422", "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": "2021-Sep-14_to_2021-Sep-18_33.0_37.5"}, "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": 2021090000516}, "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": "September 14 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 18 2021"}, "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": 92382.21705646676}, "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": ["T\u00fcrkiye"]}, "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": 37.5}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[31.0, 36.75], [30.47, 36.97], [30.25, 37.5], [30.47, 38.03], [30.82, 38.18], [30.96, 38.5], [30.75, 39.0], [30.85, 39.25], [30.75, 39.5], [30.85, 39.75], [30.75, 40.0], [30.97, 40.53], [31.5, 40.75], [31.75, 40.65], [32.0, 40.75], [32.53, 40.53], [32.68, 40.18], [32.75, 40.15], [33.0, 40.25], [33.53, 40.03], [33.68, 39.68], [34.03, 39.53], [34.18, 39.18], [34.25, 39.15], [34.5, 39.25], [34.75, 39.15], [35.0, 39.25], [35.53, 39.03], [35.75, 38.5], [35.53, 37.97], [35.13, 37.8], [35.25, 37.5], [35.03, 36.97], [34.68, 36.82], [34.53, 36.47], [34.0, 36.25], [33.75, 36.35], [33.68, 36.32], [33.53, 35.97], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.47, 36.47], [31.32, 36.82], [31.25, 36.85], [31.0, 36.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, 38.03], [31.0, 38.25], [31.53, 38.03], [31.75, 37.5], [31.53, 36.97], [31.0, 36.75], [30.47, 36.97], [30.25, 37.5], [30.47, 38.03]]]]}, "2021-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.96, 38.5], [30.75, 39.0], [30.85, 39.25], [30.75, 39.5], [30.85, 39.75], [30.75, 40.0], [30.97, 40.53], [31.5, 40.75], [31.75, 40.65], [32.0, 40.75], [32.53, 40.53], [32.68, 40.18], [32.75, 40.15], [33.0, 40.25], [33.53, 40.03], [33.68, 39.68], [34.03, 39.53], [34.25, 39.0], [34.15, 38.75], [34.25, 38.5], [34.15, 38.25], [34.2, 38.13], [34.5, 38.25], [35.03, 38.03], [35.25, 37.5], [35.03, 36.97], [34.68, 36.82], [34.53, 36.47], [34.0, 36.25], [33.75, 36.35], [33.68, 36.32], [33.53, 35.97], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.47, 36.47], [31.32, 36.82], [31.25, 36.85], [31.0, 36.75], [30.47, 36.97], [30.25, 37.5], [30.47, 38.03], [30.82, 38.18], [30.96, 38.5]]]]}, "2021-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.96, 38.5], [30.75, 39.0], [30.85, 39.25], [30.75, 39.5], [30.85, 39.75], [30.75, 40.0], [30.97, 40.53], [31.5, 40.75], [31.75, 40.65], [32.0, 40.75], [32.53, 40.53], [32.68, 40.18], [32.75, 40.15], [33.0, 40.25], [33.53, 40.03], [33.68, 39.68], [34.03, 39.53], [34.18, 39.18], [34.25, 39.15], [34.5, 39.25], [34.75, 39.15], [35.0, 39.25], [35.53, 39.03], [35.75, 38.5], [35.53, 37.97], [35.13, 37.8], [35.25, 37.5], [35.03, 36.97], [34.68, 36.82], [34.53, 36.47], [34.0, 36.25], [33.75, 36.35], [33.68, 36.32], [33.53, 35.97], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.47, 36.47], [31.32, 36.82], [31.25, 36.85], [31.0, 36.75], [30.47, 36.97], [30.25, 37.5], [30.47, 38.03], [30.82, 38.18], [30.96, 38.5]]]]}, "2021-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, 38.0], [30.96, 38.5], [30.75, 39.0], [30.85, 39.25], [30.75, 39.5], [30.85, 39.75], [30.75, 40.0], [30.97, 40.53], [31.5, 40.75], [31.75, 40.65], [32.0, 40.75], [32.53, 40.53], 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36.75], [33.75, 36.85], [33.5, 36.75], [33.25, 36.85], [33.0, 36.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.313482843173233}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.639743427390281}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.01711823350024, 15.631901881159024, 14.746995069898958, 15.078578782007583, 16.24064531755465]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.01711823350024, 11.44101570861335, 10.446402684119334, 11.472285472804003, 14.868650910371286]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7044851776724386, -4.233341264530496, -5.156361931851395, -4.647035846676798, -3.931001252834205]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7044851776724386, -5.004839650226529, -6.313482843173233, -5.799728346343954, -4.210917092766863]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2469051006791998, -1.590873501250394, -1.928205045683391, -1.687008950968021, -1.3694886268567814]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2469051006791998, -2.039929878039407, -2.4132752914470923, -1.9524890964813262, -1.5084172218681782]}}