{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:57.009238", "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-Jul-20_to_2012-Jul-22_9.0_49.0"}, "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": 2012070001122}, "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 20 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 22 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": 91311.64485065089}, "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": ["France", "Germany", "Luxembourg"]}, "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": 49.0}, "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": 9.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "9.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 3.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 10.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.97, 48.53], [3.32, 48.68], [3.47, 49.03], [3.82, 49.18], [3.97, 49.53], [4.5, 49.75], [5.0, 49.54], [5.32, 49.68], [5.35, 49.75], [5.25, 50.0], [5.47, 50.53], [6.0, 50.75], [6.25, 50.65], [6.5, 50.75], [6.75, 50.65], [6.82, 50.68], [6.97, 51.03], [7.5, 51.25], [8.03, 51.03], [8.18, 50.68], [8.53, 50.53], [8.68, 50.18], [8.75, 50.15], [9.0, 50.25], [9.25, 50.15], [9.5, 50.25], [10.0, 50.04], [10.5, 50.25], [11.03, 50.03], [11.25, 49.5], [11.15, 49.25], [11.25, 49.0], [11.03, 48.47], [10.68, 48.32], [10.53, 47.97], [10.0, 47.75], [9.75, 47.85], [9.5, 47.75], [9.25, 47.85], [9.0, 47.75], [8.75, 47.85], [8.5, 47.75], [8.25, 47.85], [8.0, 47.75], [7.75, 47.85], [7.68, 47.82], [7.53, 47.47], [7.0, 47.25], [6.47, 47.47], [6.32, 47.82], [6.25, 47.85], [6.0, 47.75], [5.75, 47.85], [5.5, 47.75], [5.25, 47.85], [5.0, 47.75], [4.75, 47.85], [4.68, 47.82], [4.65, 47.75], [4.75, 47.5], [4.53, 46.97], [4.0, 46.75], [3.75, 46.85], [3.5, 46.75], [2.97, 46.97], [2.75, 47.5], [2.85, 47.75], [2.75, 48.0], [2.97, 48.53]]]]}, "2012-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.97, 48.53], [3.32, 48.68], [3.47, 49.03], [3.82, 49.18], [3.97, 49.53], [4.5, 49.75], [5.0, 49.54], [5.32, 49.68], [5.35, 49.75], [5.25, 50.0], [5.47, 50.53], [6.0, 50.75], [6.25, 50.65], [6.5, 50.75], [6.75, 50.65], [6.82, 50.68], [6.97, 51.03], [7.5, 51.25], [8.03, 51.03], [8.18, 50.68], [8.53, 50.53], [8.68, 50.18], [8.75, 50.15], [9.0, 50.25], [9.25, 50.15], [9.5, 50.25], [10.0, 50.04], [10.5, 50.25], [11.03, 50.03], [11.25, 49.5], [11.15, 49.25], [11.25, 49.0], [11.03, 48.47], [10.68, 48.32], [10.53, 47.97], [10.0, 47.75], [9.75, 47.85], [9.5, 47.75], [9.25, 47.85], [9.0, 47.75], [8.75, 47.85], [8.5, 47.75], [8.25, 47.85], [8.0, 47.75], [7.75, 47.85], [7.68, 47.82], [7.53, 47.47], [7.0, 47.25], [6.47, 47.47], [6.32, 47.82], [6.25, 47.85], [6.0, 47.75], [5.75, 47.85], [5.5, 47.75], [5.25, 47.85], [5.0, 47.75], [4.75, 47.85], [4.68, 47.82], [4.65, 47.75], [4.75, 47.5], [4.53, 46.97], [4.0, 46.75], [3.75, 46.85], [3.5, 46.75], [2.97, 46.97], [2.75, 47.5], [2.85, 47.75], [2.75, 48.0], [2.97, 48.53]]]]}, "2012-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.97, 48.53], [3.32, 48.68], [3.47, 49.03], [3.82, 49.18], [3.97, 49.53], [4.5, 49.75], [5.0, 49.54], [5.32, 49.68], [5.35, 49.75], [5.25, 50.0], [5.47, 50.53], [6.0, 50.75], [6.25, 50.65], [6.5, 50.75], [6.75, 50.65], [6.82, 50.68], [6.97, 51.03], [7.5, 51.25], [8.03, 51.03], [8.18, 50.68], [8.53, 50.53], [8.68, 50.18], [8.75, 50.15], [9.0, 50.25], [9.25, 50.15], [9.5, 50.25], [10.0, 50.04], [10.5, 50.25], [11.03, 50.03], [11.25, 49.5], [11.15, 49.25], [11.25, 49.0], [11.03, 48.47], [10.68, 48.32], [10.53, 47.97], [10.0, 47.75], [9.75, 47.85], [9.5, 47.75], [9.25, 47.85], [9.0, 47.75], [8.75, 47.85], [8.5, 47.75], [8.25, 47.85], [8.0, 47.75], [7.75, 47.85], [7.68, 47.82], [7.53, 47.47], [7.0, 47.25], [6.47, 47.47], [6.32, 47.82], [6.25, 47.85], [6.0, 47.75], [5.75, 47.85], [5.5, 47.75], [5.25, 47.85], [5.0, 47.75], [4.75, 47.85], [4.68, 47.82], [4.65, 47.75], [4.75, 47.5], [4.53, 46.97], [4.0, 46.75], [3.75, 46.85], [3.5, 46.75], [2.97, 46.97], [2.75, 47.5], [2.85, 47.75], [2.75, 48.0], [2.97, 48.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.025521006254564}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.138802076322958}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.492575256555142, 14.158152624058403, 14.662388056214695]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.01249680477514, 12.17484564385046, 12.618668744976901]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.0277645790447, -5.425549209073707, -4.963092440850465]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.6310285884287055, -6.025521006254564, -5.916140205666977]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4792886029966548, -1.5654583561546145, -1.407033236503747]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7392905652973825, -1.7295740196056484, -1.6713940665027573]}}