{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:19.129933", "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": "2012-May-05_to_2012-May-07_6.0_57.5"}, "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": 2012050000432}, "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": "May 05 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 07 2012"}, "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": 69313.27106243836}, "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": ["Denmark", "Norway"]}, "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": ["North Sea", "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": 57.5}, "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": 6.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "6.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 5.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 10.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.97, 57.53], [5.32, 57.68], [5.47, 58.03], [6.0, 58.25], [6.25, 58.15], [6.32, 58.18], [6.47, 58.53], [7.0, 58.75], [7.25, 58.65], [7.5, 58.75], [7.75, 58.65], [8.0, 58.75], [8.5, 58.54], [9.0, 58.75], [9.53, 58.53], [9.68, 58.18], [9.75, 58.15], [10.0, 58.25], [10.53, 58.03], [10.75, 57.5], [10.65, 57.25], [10.75, 57.0], [10.65, 56.75], [10.75, 56.5], [10.65, 56.25], [10.75, 56.0], [10.53, 55.47], [10.0, 55.25], [9.75, 55.35], [9.5, 55.25], [9.25, 55.35], [9.0, 55.25], [8.75, 55.35], [8.5, 55.25], [8.0, 55.46], [7.68, 55.32], [7.53, 54.97], [7.0, 54.75], [6.75, 54.85], [6.5, 54.75], [5.97, 54.97], [5.75, 55.5], [5.85, 55.75], [5.82, 55.82], [5.75, 55.85], [5.5, 55.75], [4.97, 55.97], [4.75, 56.5], [4.85, 56.75], [4.75, 57.0], [4.97, 57.53]]]]}, "2012-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.97, 57.53], [5.32, 57.68], [5.47, 58.03], [6.0, 58.25], [6.25, 58.15], [6.32, 58.18], [6.47, 58.53], [7.0, 58.75], [7.25, 58.65], [7.5, 58.75], [7.75, 58.65], [8.0, 58.75], [8.5, 58.54], [9.0, 58.75], [9.53, 58.53], [9.68, 58.18], [9.75, 58.15], [10.0, 58.25], [10.53, 58.03], [10.75, 57.5], [10.65, 57.25], [10.75, 57.0], [10.65, 56.75], [10.75, 56.5], [10.65, 56.25], [10.75, 56.0], [10.53, 55.47], [10.0, 55.25], [9.75, 55.35], [9.5, 55.25], [9.25, 55.35], [9.0, 55.25], [8.75, 55.35], [8.5, 55.25], [8.0, 55.46], [7.68, 55.32], [7.53, 54.97], [7.0, 54.75], [6.75, 54.85], [6.5, 54.75], [5.97, 54.97], [5.75, 55.5], [5.85, 55.75], [5.82, 55.82], [5.75, 55.85], [5.5, 55.75], [4.97, 55.97], [4.75, 56.5], [4.85, 56.75], [4.75, 57.0], [4.97, 57.53]]]]}, "2012-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.97, 57.53], [5.32, 57.68], [5.47, 58.03], [6.0, 58.25], [6.25, 58.15], [6.32, 58.18], [6.47, 58.53], [7.0, 58.75], [7.25, 58.65], [7.5, 58.75], [7.75, 58.65], [8.0, 58.75], [8.5, 58.54], [9.0, 58.75], [9.53, 58.53], [9.68, 58.18], [9.75, 58.15], [10.0, 58.25], [10.53, 58.03], [10.75, 57.5], [10.65, 57.25], [10.75, 57.0], [10.65, 56.75], [10.75, 56.5], [10.65, 56.25], [10.75, 56.0], [10.53, 55.47], [10.0, 55.25], [9.75, 55.35], [9.5, 55.25], [9.25, 55.35], [9.0, 55.25], [8.75, 55.35], [8.5, 55.25], [8.0, 55.46], [7.68, 55.32], [7.53, 54.97], [7.0, 54.75], [6.75, 54.85], [6.5, 54.75], [5.97, 54.97], [5.75, 55.5], [5.85, 55.75], [5.82, 55.82], [5.75, 55.85], [5.5, 55.75], [4.97, 55.97], [4.75, 56.5], [4.85, 56.75], [4.75, 57.0], [4.97, 57.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.9683693322836575}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0450682033379084}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.991444044879813, 5.840106511398574, 6.455271418501411]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.820181142067156, 4.905642153064832, 5.655915934766028]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9311498809692926, -3.307267520348883, -2.89678720869555]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.7528272279806743, -4.9683693322836575, -4.76763899896946]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6952212037268373, -1.7135210400419598, -1.3762437705635358]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.170837464526345, -1.8867679673369342, -1.5955294563328069]}}