{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:31.755452", "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": "2019-Apr-29_to_2019-May-02_18.5_42.5"}, "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": 2019040000764}, "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 29 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 02 2019"}, "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": 60699.26002114171}, "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": ["Albania", "Bosnia and Herzegovina", "Croatia", "Montenegro", "Serbia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Adriatic Sea"]}, "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": 42.5}, "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": 18.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, 43.5], [16.47, 44.03], [16.82, 44.18], [16.97, 44.53], [17.5, 44.75], [17.75, 44.65], [17.82, 44.68], [17.97, 45.03], [18.5, 45.25], [18.75, 45.15], [19.0, 45.25], [19.5, 45.04], [20.0, 45.25], [20.25, 45.15], [20.5, 45.25], [21.03, 45.03], [21.25, 44.5], [21.03, 43.97], [20.68, 43.82], [20.53, 43.47], [20.18, 43.32], [20.03, 42.97], [19.68, 42.82], [19.65, 42.75], [19.75, 42.5], [19.53, 41.97], [19.0, 41.75], [18.75, 41.85], [18.5, 41.75], [18.25, 41.85], [18.0, 41.75], [17.47, 41.97], [17.32, 42.32], [16.97, 42.47], [16.82, 42.82], [16.47, 42.97], [16.25, 43.5]]]]}, "2019-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, 43.5], [16.47, 44.03], [16.82, 44.18], [16.97, 44.53], [17.5, 44.75], [17.75, 44.65], [17.82, 44.68], [17.97, 45.03], [18.5, 45.25], [18.75, 45.15], [19.0, 45.25], [19.5, 45.04], [20.0, 45.25], [20.25, 45.15], [20.5, 45.25], [21.03, 45.03], [21.25, 44.5], [21.03, 43.97], [20.68, 43.82], [20.53, 43.47], [20.18, 43.32], [20.03, 42.97], [19.68, 42.82], [19.65, 42.75], [19.68, 42.68], [20.03, 42.53], [20.25, 42.0], [20.15, 41.75], [20.25, 41.5], [20.03, 40.97], [19.5, 40.75], [18.97, 40.97], [18.82, 41.32], [18.75, 41.35], [18.5, 41.25], [17.97, 41.47], [17.82, 41.82], [17.47, 41.97], [17.32, 42.32], [16.97, 42.47], [16.82, 42.82], [16.47, 42.97], [16.25, 43.5]]]]}, "2019-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, 43.5], [16.47, 44.03], [16.82, 44.18], [16.97, 44.53], [17.5, 44.75], [17.75, 44.65], [17.82, 44.68], [17.97, 45.03], [18.5, 45.25], [18.75, 45.15], [19.0, 45.25], [19.5, 45.04], [20.0, 45.25], [20.25, 45.15], [20.5, 45.25], [21.03, 45.03], [21.25, 44.5], [21.03, 43.97], [20.68, 43.82], [20.53, 43.47], [20.18, 43.32], [20.03, 42.97], [19.68, 42.82], [19.65, 42.75], [19.68, 42.68], [20.03, 42.53], [20.25, 42.0], [20.15, 41.75], [20.25, 41.5], [20.03, 40.97], [19.5, 40.75], [18.97, 40.97], [18.82, 41.32], [18.75, 41.35], [18.5, 41.25], [17.97, 41.47], [17.82, 41.82], [17.47, 41.97], [17.32, 42.32], [16.97, 42.47], [16.82, 42.82], [16.47, 42.97], [16.25, 43.5]]]]}, "2019-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, 43.0], [16.97, 43.53], [17.5, 43.75], [18.03, 43.53], [18.18, 43.18], [18.25, 43.15], [18.5, 43.25], [19.03, 43.03], [19.18, 42.68], [19.25, 42.65], [19.5, 42.75], [20.03, 42.53], [20.25, 42.0], [20.15, 41.75], [20.25, 41.5], [20.03, 40.97], [19.5, 40.75], [18.97, 40.97], [18.82, 41.32], [18.75, 41.35], [18.5, 41.25], [17.97, 41.47], [17.82, 41.82], [17.47, 41.97], [17.32, 42.32], [16.97, 42.47], [16.75, 43.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.574946809442963}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.168927965678047}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.083027859958008, 8.705827870655412, 9.907394519350476, 14.213707395552774]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.301537080839296, 3.520497562391256, 4.7364359802268154, 11.813013951724145]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.9251956874236607, -5.032185698628594, -4.008302840441462, -2.2596082501885997]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.623931901566209, -6.574946809442963, -5.14150879614192, -2.7992014075056204]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.396444396438884, -1.9559222650343737, -1.5516963627964993, -1.2694010451334854]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.77009624628492, -2.2504021575255373, -1.9092693216923056, -1.320490722329032]}}