{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:27.275545", "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": "2016-May-31_to_2016-Jun-02_252.5_26.5"}, "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": 2016050000779}, "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 31 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 02 2016"}, "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": 116472.55224723322}, "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": ["Mexico", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": 26.5}, "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": 252.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "252.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 250.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 253.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.65, 29.75], [-109.75, 30.0], [-109.53, 30.53], [-109.18, 30.68], [-109.15, 30.75], [-109.25, 31.0], [-109.15, 31.25], [-109.25, 31.5], [-109.03, 32.03], [-108.5, 32.25], [-108.25, 32.15], [-108.0, 32.25], [-107.75, 32.15], [-107.5, 32.25], [-107.25, 32.15], [-107.0, 32.25], [-106.47, 32.03], [-106.25, 31.5], [-106.47, 30.97], [-106.82, 30.82], [-106.85, 30.75], [-106.75, 30.5], [-106.85, 30.25], [-106.75, 30.0], [-106.85, 29.75], [-106.82, 29.68], [-106.47, 29.53], [-106.25, 29.0], [-106.35, 28.75], [-106.25, 28.5], [-106.35, 28.25], [-106.32, 28.18], [-105.97, 28.03], [-105.75, 27.5], [-105.85, 27.25], [-105.75, 27.0], [-105.85, 26.75], [-105.75, 26.5], [-105.85, 26.25], [-105.75, 26.0], [-105.97, 25.47], [-106.5, 25.25], [-106.75, 25.35], [-107.0, 25.25], [-107.25, 25.35], [-107.5, 25.25], [-108.03, 25.47], [-108.18, 25.82], [-108.53, 25.97], [-108.75, 26.5], [-108.65, 26.75], [-108.75, 27.0], [-108.65, 27.25], [-108.75, 27.5], [-108.65, 27.75], [-108.75, 28.0], [-108.65, 28.25], [-108.68, 28.32], [-108.75, 28.35], [-109.0, 28.25], [-109.53, 28.47], [-109.75, 29.0], [-109.65, 29.25], [-109.75, 29.5], [-109.65, 29.75]]]]}, "2016-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.65, 29.75], [-109.75, 30.0], [-109.53, 30.53], [-109.18, 30.68], [-109.15, 30.75], [-109.25, 31.0], [-109.15, 31.25], [-109.25, 31.5], [-109.03, 32.03], [-108.5, 32.25], [-108.25, 32.15], [-108.0, 32.25], [-107.75, 32.15], [-107.5, 32.25], [-107.25, 32.15], [-107.0, 32.25], [-106.47, 32.03], [-106.25, 31.5], [-106.47, 30.97], [-106.82, 30.82], [-106.85, 30.75], [-106.75, 30.5], [-106.85, 30.25], [-106.75, 30.0], [-106.85, 29.75], [-106.82, 29.68], [-106.47, 29.53], [-106.25, 29.0], [-106.35, 28.75], [-106.25, 28.5], [-106.35, 28.25], [-106.32, 28.18], [-105.97, 28.03], [-105.75, 27.5], [-105.85, 27.25], [-105.75, 27.0], [-105.85, 26.75], [-105.75, 26.5], [-105.85, 26.25], [-105.75, 26.0], [-105.97, 25.47], [-106.5, 25.25], [-106.75, 25.35], [-107.0, 25.25], [-107.25, 25.35], [-107.5, 25.25], [-108.03, 25.47], [-108.18, 25.82], [-108.53, 25.97], [-108.75, 26.5], [-108.65, 26.75], [-108.75, 27.0], [-108.65, 27.25], [-108.75, 27.5], [-108.65, 27.75], [-108.75, 28.0], [-108.65, 28.25], [-108.68, 28.32], [-108.75, 28.35], [-109.0, 28.25], [-109.53, 28.47], [-109.75, 29.0], [-109.65, 29.25], [-109.75, 29.5], [-109.65, 29.75]]]]}, "2016-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.65, 29.75], [-109.75, 30.0], [-109.53, 30.53], [-109.18, 30.68], [-109.15, 30.75], [-109.25, 31.0], [-109.15, 31.25], [-109.25, 31.5], [-109.03, 32.03], [-108.5, 32.25], [-108.25, 32.15], [-108.0, 32.25], [-107.75, 32.15], [-107.5, 32.25], [-107.25, 32.15], [-107.0, 32.25], [-106.47, 32.03], [-106.25, 31.5], [-106.47, 30.97], [-106.82, 30.82], [-106.85, 30.75], [-106.75, 30.5], [-106.85, 30.25], [-106.75, 30.0], [-106.85, 29.75], [-106.82, 29.68], [-106.47, 29.53], [-106.25, 29.0], [-106.35, 28.75], [-106.25, 28.5], [-106.35, 28.25], [-106.32, 28.18], [-105.97, 28.03], [-105.75, 27.5], [-105.85, 27.25], [-105.75, 27.0], [-105.85, 26.75], [-105.75, 26.5], [-105.85, 26.25], [-105.75, 26.0], [-105.97, 25.47], [-106.5, 25.25], [-106.75, 25.35], [-107.0, 25.25], [-107.25, 25.35], [-107.5, 25.25], [-108.03, 25.47], [-108.18, 25.82], [-108.53, 25.97], [-108.75, 26.5], [-108.65, 26.75], [-108.75, 27.0], [-108.65, 27.25], [-108.75, 27.5], [-108.65, 27.75], [-108.75, 28.0], [-108.65, 28.25], [-108.68, 28.32], [-108.75, 28.35], [-109.0, 28.25], [-109.53, 28.47], [-109.75, 29.0], [-109.65, 29.25], [-109.75, 29.5], [-109.65, 29.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.575660400733}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.420460832161004}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.59949946851691, 17.7348872986949, 18.126246879392795]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.12512698403242, 11.361763442956601, 12.129359487151646]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.74591162741787, -4.872084337362951, -4.643386531702189]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.96431157152125, -7.143242019247452, -7.575660400733]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7309696764716853, -2.249064428065194, -2.101197188447089]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6082192471343304, -2.913631660408679, -3.1331604673108258]}}