{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:39.798318", "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": "2020-Jul-11_to_2020-Jul-13_20.0_51.0"}, "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": 2020070000424}, "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 11 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 13 2020"}, "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": 53384.01061908428}, "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": ["Poland"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe"]}, "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": []}, "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": 51.0}, "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": 20.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 52.03], [18.82, 52.18], [18.97, 52.53], [19.32, 52.68], [19.47, 53.03], [19.88, 53.2], [19.82, 53.32], [19.75, 53.35], [19.5, 53.25], [18.97, 53.47], [18.75, 54.0], [18.97, 54.53], [19.5, 54.75], [19.75, 54.65], [20.0, 54.75], [20.53, 54.53], [20.68, 54.18], [21.03, 54.03], [21.18, 53.68], [21.25, 53.65], [21.5, 53.75], [21.75, 53.65], [22.0, 53.75], [22.53, 53.53], [22.75, 53.0], [22.65, 52.75], [22.75, 52.5], [22.53, 51.97], [22.18, 51.82], [22.15, 51.75], [22.25, 51.5], [22.03, 50.97], [21.68, 50.82], [21.53, 50.47], [21.18, 50.32], [21.03, 49.97], [20.5, 49.75], [20.25, 49.85], [20.0, 49.75], [19.75, 49.85], [19.5, 49.75], [18.97, 49.97], [18.82, 50.32], [18.47, 50.47], [18.25, 51.0], [18.35, 51.25], [18.25, 51.5], [18.47, 52.03]]]]}, "2020-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 52.03], [18.82, 52.18], [18.97, 52.53], [19.32, 52.68], [19.47, 53.03], [19.88, 53.2], [19.82, 53.32], [19.75, 53.35], [19.5, 53.25], [18.97, 53.47], [18.75, 54.0], [18.97, 54.53], [19.5, 54.75], [19.75, 54.65], [20.0, 54.75], [20.53, 54.53], [20.68, 54.18], [21.03, 54.03], [21.18, 53.68], [21.25, 53.65], [21.5, 53.75], [21.75, 53.65], [22.0, 53.75], [22.53, 53.53], [22.75, 53.0], [22.65, 52.75], [22.75, 52.5], [22.53, 51.97], [22.18, 51.82], [22.15, 51.75], [22.25, 51.5], [22.03, 50.97], [21.68, 50.82], [21.53, 50.47], [21.18, 50.32], [21.03, 49.97], [20.5, 49.75], [20.25, 49.85], [20.0, 49.75], [19.75, 49.85], [19.5, 49.75], [18.97, 49.97], [18.82, 50.32], [18.47, 50.47], [18.25, 51.0], [18.35, 51.25], [18.25, 51.5], [18.47, 52.03]]]]}, "2020-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 52.03], [18.82, 52.18], [18.97, 52.53], [19.32, 52.68], [19.47, 53.03], [19.88, 53.2], [19.82, 53.32], [19.75, 53.35], [19.5, 53.25], [18.97, 53.47], [18.75, 54.0], [18.97, 54.53], [19.5, 54.75], [19.75, 54.65], [20.0, 54.75], [20.53, 54.53], [20.68, 54.18], [21.03, 54.03], [21.18, 53.68], [21.25, 53.65], [21.5, 53.75], [21.75, 53.65], [22.0, 53.75], [22.53, 53.53], [22.75, 53.0], [22.65, 52.75], [22.75, 52.5], [22.53, 51.97], [22.18, 51.82], [22.15, 51.75], [22.25, 51.5], [22.03, 50.97], [21.68, 50.82], [21.53, 50.47], [21.18, 50.32], [21.03, 49.97], [20.5, 49.75], [20.25, 49.85], [20.0, 49.75], [19.75, 49.85], [19.5, 49.75], [18.97, 49.97], [18.82, 50.32], [18.47, 50.47], [18.25, 51.0], [18.35, 51.25], [18.25, 51.5], [18.47, 52.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.647005670785745}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.460041363902153}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.194009508491945, 14.603475565286487, 14.451842696477684]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.35252098764289, 13.908932475845688, 13.637736773262304]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.656910134790406, -4.2636044147232655, -4.459609542192788]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.647005670785745, -4.693718255888427, -5.122988302480053]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4427564581426051, -1.3316298191255862, -1.3928288026652973]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6694862699582367, -1.402297251929181, -1.5334987878241564]}}