{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:47.850729", "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": "2017-May-02_to_2017-May-04_327.5_39.0"}, "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": 2017050000169}, "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 02 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 04 2017"}, "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": 345254.4571756432}, "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": ["Azores"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Atlantic-Ocean"]}, "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 Atlantic Ocean"]}, "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": 39.0}, "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": 327.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "327.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 324.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 332.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.65, 41.25], [-35.75, 41.5], [-35.53, 42.03], [-35.0, 42.25], [-34.75, 42.15], [-34.5, 42.25], [-33.97, 42.03], [-33.82, 41.68], [-33.75, 41.65], [-33.68, 41.68], [-33.53, 42.03], [-33.0, 42.25], [-32.7, 42.12], [-32.65, 42.25], [-32.75, 42.5], [-32.53, 43.03], [-32.0, 43.25], [-31.5, 43.04], [-31.0, 43.25], [-30.75, 43.15], [-30.5, 43.25], [-30.25, 43.15], [-30.0, 43.25], [-29.75, 43.15], [-29.5, 43.25], [-28.97, 43.03], [-28.82, 42.68], [-28.47, 42.53], [-28.32, 42.18], [-28.25, 42.15], [-28.0, 42.25], [-27.75, 42.15], [-27.5, 42.25], [-26.97, 42.03], [-26.75, 41.5], [-26.85, 41.25], [-26.75, 41.0], [-26.85, 40.75], [-26.75, 40.5], [-26.85, 40.25], [-26.75, 40.0], [-26.85, 39.75], [-26.75, 39.5], [-26.85, 39.25], [-26.75, 39.0], [-26.97, 38.47], [-27.32, 38.32], [-27.35, 38.25], [-27.25, 38.0], [-27.47, 37.47], [-27.82, 37.32], [-27.97, 36.97], [-28.5, 36.75], [-28.75, 36.85], [-28.82, 36.82], [-28.85, 36.75], [-28.75, 36.5], [-28.97, 35.97], [-29.32, 35.82], [-29.35, 35.75], [-29.25, 35.5], [-29.47, 34.97], [-30.0, 34.75], [-30.25, 34.85], [-30.5, 34.75], [-31.03, 34.97], [-31.18, 35.32], [-31.53, 35.47], [-31.75, 36.0], [-31.65, 36.25], [-31.68, 36.32], [-32.03, 36.47], [-32.18, 36.82], [-32.25, 36.85], [-32.5, 36.75], [-33.03, 36.97], [-33.18, 37.32], [-33.53, 37.47], [-33.68, 37.82], [-34.03, 37.97], [-34.18, 38.32], [-34.53, 38.47], [-34.68, 38.82], [-35.03, 38.97], [-35.25, 39.5], [-35.15, 39.75], [-35.18, 39.82], [-35.53, 39.97], [-35.75, 40.5], [-35.65, 40.75], [-35.75, 41.0], [-35.65, 41.25]]]]}, "2017-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.65, 41.25], [-35.75, 41.5], [-35.53, 42.03], [-35.0, 42.25], [-34.75, 42.15], [-34.5, 42.25], [-33.97, 42.03], [-33.82, 41.68], [-33.75, 41.65], [-33.68, 41.68], [-33.53, 42.03], [-33.0, 42.25], [-32.7, 42.12], [-32.65, 42.25], [-32.75, 42.5], [-32.53, 43.03], [-32.0, 43.25], [-31.5, 43.04], [-31.0, 43.25], [-30.75, 43.15], [-30.5, 43.25], [-30.25, 43.15], [-30.0, 43.25], [-29.75, 43.15], [-29.5, 43.25], [-28.97, 43.03], [-28.82, 42.68], [-28.47, 42.53], [-28.32, 42.18], [-28.25, 42.15], [-28.0, 42.25], [-27.75, 42.15], [-27.5, 42.25], [-26.97, 42.03], [-26.75, 41.5], [-26.85, 41.25], [-26.75, 41.0], [-26.85, 40.75], [-26.75, 40.5], [-26.85, 40.25], [-26.75, 40.0], [-26.85, 39.75], [-26.75, 39.5], [-26.85, 39.25], [-26.75, 39.0], [-26.97, 38.47], [-27.32, 38.32], [-27.35, 38.25], [-27.25, 38.0], [-27.47, 37.47], [-27.82, 37.32], [-27.97, 36.97], [-28.5, 36.75], [-28.75, 36.85], [-28.82, 36.82], [-28.85, 36.75], [-28.75, 36.5], [-28.97, 35.97], [-29.32, 35.82], [-29.35, 35.75], [-29.25, 35.5], [-29.47, 34.97], [-30.0, 34.75], [-30.25, 34.85], [-30.5, 34.75], [-31.03, 34.97], [-31.18, 35.32], [-31.53, 35.47], [-31.75, 36.0], [-31.65, 36.25], [-31.68, 36.32], [-32.03, 36.47], [-32.18, 36.82], [-32.25, 36.85], [-32.5, 36.75], [-33.03, 36.97], [-33.18, 37.32], [-33.53, 37.47], [-33.68, 37.82], [-34.03, 37.97], [-34.18, 38.32], [-34.53, 38.47], [-34.68, 38.82], [-35.03, 38.97], [-35.25, 39.5], [-35.15, 39.75], [-35.18, 39.82], [-35.53, 39.97], [-35.75, 40.5], [-35.65, 40.75], [-35.75, 41.0], [-35.65, 41.25]]]]}, "2017-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.65, 41.25], [-35.75, 41.5], [-35.53, 42.03], [-35.0, 42.25], [-34.75, 42.15], [-34.5, 42.25], [-33.97, 42.03], [-33.82, 41.68], [-33.75, 41.65], [-33.68, 41.68], [-33.53, 42.03], [-33.0, 42.25], [-32.7, 42.12], [-32.65, 42.25], [-32.75, 42.5], [-32.53, 43.03], [-32.0, 43.25], [-31.5, 43.04], [-31.0, 43.25], [-30.75, 43.15], [-30.5, 43.25], [-30.25, 43.15], [-30.0, 43.25], [-29.75, 43.15], [-29.5, 43.25], [-28.97, 43.03], [-28.82, 42.68], [-28.47, 42.53], [-28.32, 42.18], [-28.25, 42.15], [-28.0, 42.25], [-27.75, 42.15], [-27.5, 42.25], [-26.97, 42.03], [-26.75, 41.5], [-26.85, 41.25], [-26.75, 41.0], [-26.85, 40.75], [-26.75, 40.5], [-26.85, 40.25], [-26.75, 40.0], [-26.85, 39.75], [-26.75, 39.5], [-26.85, 39.25], [-26.75, 39.0], [-26.97, 38.47], [-27.32, 38.32], [-27.35, 38.25], [-27.25, 38.0], [-27.47, 37.47], [-27.82, 37.32], [-27.97, 36.97], [-28.5, 36.75], [-28.75, 36.85], [-28.82, 36.82], [-28.85, 36.75], [-28.75, 36.5], [-28.97, 35.97], [-29.32, 35.82], [-29.35, 35.75], [-29.25, 35.5], [-29.47, 34.97], [-30.0, 34.75], [-30.25, 34.85], [-30.5, 34.75], [-31.03, 34.97], [-31.18, 35.32], [-31.53, 35.47], [-31.75, 36.0], [-31.65, 36.25], [-31.68, 36.32], [-32.03, 36.47], [-32.18, 36.82], [-32.25, 36.85], [-32.5, 36.75], [-33.03, 36.97], [-33.18, 37.32], [-33.53, 37.47], [-33.68, 37.82], [-34.03, 37.97], [-34.18, 38.32], [-34.53, 38.47], [-34.68, 38.82], [-35.03, 38.97], [-35.25, 39.5], [-35.15, 39.75], [-35.18, 39.82], [-35.53, 39.97], [-35.75, 40.5], [-35.65, 40.75], [-35.75, 41.0], [-35.65, 41.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.761124850089288}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3613556915861618}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.774637743372011, 13.43939340136916, 13.965278954971211]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.331649717796267, 12.453024943185312, 12.64476931438088]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9406272689867636, -2.3250119005791117, -1.8184279051926053]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.761124850089288, -3.0367336276081005, -2.391826722897065]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.757821067485533, -2.206788611936661, -1.6684934310658188]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-4.011944922385148, -3.2887727036002743, -2.4496702967787005]}}