{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:22.314544", "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": "2024-Jul-04_to_2024-Jul-08_9.5_59.0"}, "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": 2024070000157}, "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 04 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 08 2024"}, "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": 64922.91004453967}, "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": ["Norway", "Sweden"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": ["Skagerrak"]}, "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": 59.0}, "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": 9.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "9.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 7.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 14.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.97, 59.03], [7.32, 59.18], [7.47, 59.53], [7.82, 59.68], [7.97, 60.03], [8.5, 60.25], [8.75, 60.15], [8.82, 60.18], [8.97, 60.53], [9.5, 60.75], [9.75, 60.65], [10.0, 60.75], [10.25, 60.65], [10.5, 60.75], [10.75, 60.65], [11.0, 60.75], [11.25, 60.65], [11.5, 60.75], [11.75, 60.65], [12.0, 60.75], [12.53, 60.53], [12.68, 60.18], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.32, 60.18], [13.47, 60.53], [14.0, 60.75], [14.53, 60.53], [14.75, 60.0], [14.65, 59.75], [14.75, 59.5], [14.65, 59.25], [14.75, 59.0], [14.53, 58.47], [14.0, 58.25], [13.75, 58.35], [13.5, 58.25], [13.25, 58.35], [13.18, 58.32], [13.03, 57.97], [12.5, 57.75], [12.25, 57.85], [12.0, 57.75], [11.75, 57.85], [11.5, 57.75], [10.97, 57.97], [10.82, 58.32], [10.7, 58.38], [10.53, 57.97], [10.0, 57.75], [9.75, 57.85], [9.5, 57.75], [9.25, 57.85], [9.0, 57.75], [8.75, 57.85], [8.5, 57.75], [8.25, 57.85], [8.18, 57.82], [8.03, 57.47], [7.5, 57.25], [6.97, 57.47], [6.75, 58.0], [6.85, 58.25], [6.75, 58.5], [6.97, 59.03]]]]}, "2024-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.97, 59.03], [7.32, 59.18], [7.47, 59.53], [7.82, 59.68], [7.97, 60.03], [8.5, 60.25], [8.75, 60.15], [8.82, 60.18], [8.97, 60.53], [9.5, 60.75], [9.75, 60.65], [10.0, 60.75], [10.25, 60.65], [10.5, 60.75], [10.75, 60.65], [11.0, 60.75], [11.25, 60.65], [11.5, 60.75], [11.75, 60.65], [12.0, 60.75], [12.53, 60.53], [12.68, 60.18], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.32, 60.18], [13.47, 60.53], [14.0, 60.75], [14.53, 60.53], [14.75, 60.0], [14.65, 59.75], [14.75, 59.5], [14.65, 59.25], [14.75, 59.0], [14.53, 58.47], [14.0, 58.25], [13.75, 58.35], [13.5, 58.25], [13.25, 58.35], [13.18, 58.32], [13.03, 57.97], [12.5, 57.75], [12.25, 57.85], [12.0, 57.75], [11.75, 57.85], [11.5, 57.75], [10.97, 57.97], [10.82, 58.32], [10.7, 58.38], [10.53, 57.97], [10.0, 57.75], [9.75, 57.85], [9.5, 57.75], [9.25, 57.85], [9.0, 57.75], [8.75, 57.85], [8.5, 57.75], [8.25, 57.85], [8.18, 57.82], [8.03, 57.47], [7.5, 57.25], [6.97, 57.47], [6.75, 58.0], [6.85, 58.25], [6.75, 58.5], [6.97, 59.03]]]]}, "2024-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.97, 59.03], [7.32, 59.18], [7.47, 59.53], [7.82, 59.68], [7.97, 60.03], [8.5, 60.25], [8.75, 60.15], [8.82, 60.18], [8.97, 60.53], [9.5, 60.75], [9.75, 60.65], [10.0, 60.75], [10.25, 60.65], [10.5, 60.75], [10.75, 60.65], [11.0, 60.75], [11.25, 60.65], [11.5, 60.75], [11.75, 60.65], [12.0, 60.75], [12.53, 60.53], [12.68, 60.18], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.32, 60.18], [13.47, 60.53], [14.0, 60.75], [14.53, 60.53], [14.75, 60.0], [14.65, 59.75], [14.75, 59.5], [14.65, 59.25], [14.75, 59.0], [14.53, 58.47], [14.0, 58.25], [13.75, 58.35], [13.5, 58.25], [13.25, 58.35], [13.18, 58.32], [13.03, 57.97], [12.5, 57.75], [12.25, 57.85], [12.0, 57.75], [11.75, 57.85], [11.5, 57.75], [10.97, 57.97], [10.82, 58.32], [10.7, 58.38], [10.53, 57.97], [10.0, 57.75], [9.75, 57.85], [9.5, 57.75], [9.25, 57.85], [9.0, 57.75], [8.75, 57.85], [8.5, 57.75], [8.25, 57.85], [8.18, 57.82], [8.03, 57.47], [7.5, 57.25], [6.97, 57.47], [6.75, 58.0], [6.85, 58.25], [6.75, 58.5], [6.97, 59.03]]]]}, "2024-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.82, 59.68], [7.97, 60.03], [8.5, 60.25], [8.75, 60.15], [8.82, 60.18], [8.97, 60.53], [9.5, 60.75], [9.75, 60.65], [10.0, 60.75], [10.25, 60.65], [10.5, 60.75], [10.75, 60.65], [11.0, 60.75], [11.25, 60.65], [11.5, 60.75], [11.75, 60.65], [12.0, 60.75], [12.53, 60.53], [12.68, 60.18], [13.03, 60.03], [13.18, 59.68], [13.25, 59.65], [13.5, 59.75], [13.75, 59.65], [14.0, 59.75], [14.53, 59.53], [14.75, 59.0], [14.53, 58.47], [14.0, 58.25], [13.75, 58.35], [13.5, 58.25], [13.25, 58.35], [13.18, 58.32], [13.03, 57.97], [12.5, 57.75], [12.25, 57.85], [12.0, 57.75], [11.75, 57.85], [11.5, 57.75], [10.97, 57.97], [10.75, 58.5], [10.85, 58.75], [10.82, 58.82], [10.75, 58.85], [10.5, 58.75], [10.2, 58.88], [10.03, 58.47], [9.68, 58.32], [9.53, 57.97], [9.0, 57.75], [8.75, 57.85], [8.5, 57.75], [8.25, 57.85], [8.0, 57.75], [7.75, 57.85], [7.5, 57.75], [6.97, 57.97], [6.75, 58.5], [6.97, 59.03], [7.32, 59.18], [7.47, 59.53], [7.82, 59.68]]]]}, "2024-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 58.5], [10.97, 59.03], [11.5, 59.25], [11.75, 59.15], [12.0, 59.25], [12.25, 59.15], [12.32, 59.18], [12.47, 59.53], [13.0, 59.75], [13.25, 59.65], [13.5, 59.75], [13.75, 59.65], [14.0, 59.75], [14.53, 59.53], [14.75, 59.0], [14.53, 58.47], [14.0, 58.25], [13.75, 58.35], [13.5, 58.25], [13.25, 58.35], [13.18, 58.32], [13.03, 57.97], [12.5, 57.75], [12.25, 57.85], [12.0, 57.75], [11.75, 57.85], [11.5, 57.75], [10.97, 57.97], [10.75, 58.5]]], [[[8.97, 58.47], [8.75, 59.0], [8.97, 59.53], [9.5, 59.75], [10.03, 59.53], [10.25, 59.0], [10.03, 58.47], [9.5, 58.25], [8.97, 58.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.363200497392199}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.944399875108302}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.027444710984696, 11.377244975715314, 12.67418766599377, 12.835378567681403, 13.802072891806802]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.522614037284484, 7.273636119502271, 9.566900346919454, 9.847403661787837, 13.094937772333026]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.099045020804208, -4.786041607651745, -3.5359069344548537, -3.342307048786777, -3.168017900100511]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.484120061175247, -6.363200497392199, -4.555746073204659, -3.7162951655772076, -3.454455462326223]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.597662875516614, -1.8996666672146607, -1.4149118527938949, -1.2972004095124152, -1.30103656614239]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9232635371366045, -2.385636640397511, -1.8589100750486784, -1.4077553882112401, -1.3725624430314514]}}