{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:19.413822", "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-Mar-29_to_2024-Apr-01_355.0_40.0"}, "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": 2024030000563}, "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": "March 29 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 01 2024"}, "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": 64496.935536230565}, "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": ["Portugal", "Spain"]}, "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": []}, "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": 40.0}, "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": 355.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "355.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 351.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 357.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.53, 40.03], [-8.18, 40.18], [-8.03, 40.53], [-7.5, 40.75], [-7.25, 40.65], [-7.0, 40.75], [-6.75, 40.65], [-6.5, 40.75], [-6.25, 40.65], [-6.0, 40.75], [-5.75, 40.65], [-5.5, 40.75], [-5.25, 40.65], [-5.18, 40.68], [-5.03, 41.03], [-4.5, 41.25], [-3.97, 41.03], [-3.82, 40.68], [-3.47, 40.53], [-3.25, 40.0], [-3.47, 39.47], [-4.0, 39.25], [-4.25, 39.35], [-4.32, 39.32], [-4.47, 38.97], [-4.82, 38.82], [-4.97, 38.47], [-5.5, 38.25], [-5.75, 38.35], [-6.0, 38.25], [-6.25, 38.35], [-6.32, 38.32], [-6.35, 38.25], [-6.25, 38.0], [-6.35, 37.75], [-6.25, 37.5], [-6.47, 36.97], [-7.0, 36.75], [-7.53, 36.97], [-7.75, 37.5], [-7.65, 37.75], [-7.68, 37.82], [-7.75, 37.85], [-8.0, 37.75], [-8.53, 37.97], [-8.75, 38.5], [-8.54, 39.0], [-8.75, 39.5], [-8.53, 40.03]]]]}, "2024-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.53, 40.03], [-8.18, 40.18], [-8.03, 40.53], [-7.5, 40.75], [-7.25, 40.65], [-7.0, 40.75], [-6.75, 40.65], [-6.5, 40.75], [-6.25, 40.65], [-6.0, 40.75], [-5.75, 40.65], [-5.5, 40.75], [-5.25, 40.65], [-5.18, 40.68], [-5.03, 41.03], [-4.5, 41.25], [-3.97, 41.03], [-3.82, 40.68], [-3.75, 40.65], [-3.5, 40.75], [-3.25, 40.65], [-3.0, 40.75], [-2.47, 40.53], [-2.25, 40.0], [-2.47, 39.47], [-3.0, 39.25], [-3.25, 39.35], [-3.5, 39.25], [-3.75, 39.35], [-4.0, 39.25], [-4.25, 39.35], [-4.32, 39.32], [-4.47, 38.97], [-4.82, 38.82], [-4.97, 38.47], [-5.5, 38.25], [-5.75, 38.35], [-6.0, 38.25], [-6.25, 38.35], [-6.32, 38.32], [-6.35, 38.25], [-6.25, 38.0], [-6.35, 37.75], [-6.25, 37.5], [-6.47, 36.97], [-7.0, 36.75], [-7.53, 36.97], [-7.75, 37.5], [-7.65, 37.75], [-7.68, 37.82], [-7.75, 37.85], [-8.0, 37.75], [-8.53, 37.97], [-8.75, 38.5], [-8.54, 39.0], [-8.75, 39.5], [-8.53, 40.03]]]]}, "2024-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.53, 40.03], [-8.18, 40.18], [-8.03, 40.53], [-7.5, 40.75], [-7.25, 40.65], [-7.0, 40.75], [-6.75, 40.65], [-6.5, 40.75], [-6.25, 40.65], [-6.0, 40.75], [-5.75, 40.65], [-5.5, 40.75], [-5.25, 40.65], [-5.18, 40.68], [-5.03, 41.03], [-4.5, 41.25], [-3.97, 41.03], [-3.82, 40.68], [-3.75, 40.65], [-3.5, 40.75], [-3.25, 40.65], [-3.0, 40.75], [-2.47, 40.53], [-2.25, 40.0], [-2.47, 39.47], [-3.0, 39.25], [-3.25, 39.35], [-3.5, 39.25], [-3.75, 39.35], [-4.0, 39.25], [-4.25, 39.35], [-4.32, 39.32], [-4.47, 38.97], [-4.82, 38.82], [-4.97, 38.47], [-5.5, 38.25], [-5.75, 38.35], [-6.0, 38.25], [-6.25, 38.35], [-6.32, 38.32], [-6.35, 38.25], [-6.25, 38.0], [-6.35, 37.75], [-6.25, 37.5], [-6.47, 36.97], [-7.0, 36.75], [-7.53, 36.97], [-7.75, 37.5], [-7.65, 37.75], [-7.68, 37.82], [-7.75, 37.85], [-8.0, 37.75], [-8.53, 37.97], [-8.75, 38.5], [-8.54, 39.0], [-8.75, 39.5], [-8.53, 40.03]]]]}, "2024-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.03, 39.47], [-4.25, 40.0], [-4.03, 40.53], [-3.5, 40.75], [-3.25, 40.65], [-3.0, 40.75], [-2.47, 40.53], [-2.25, 40.0], [-2.47, 39.47], [-3.0, 39.25], [-3.25, 39.35], [-3.5, 39.25], [-4.03, 39.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.1774368892934035}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.132740913495503}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.891144798201651, 8.63354388781255, 8.619775621612916, 7.839899411365309]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.2445037698173, 4.132674431852365, 3.686816040696897, 7.439773495259544]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.9305260590921876, -4.1730323149932405, -4.295547715681439, -3.9186008438073827]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.422742526982461, -4.667142386993987, -5.1774368892934035, -3.989446268592019]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3535442030401292, -1.4252408471501354, -1.4794318555042798, -1.3513287084347114]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5082433500315326, -1.5477523135703695, -1.6818146899902418, -1.3768611448148635]}}