{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:37.419400", "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-Jun-29_to_2016-Jul-03_249.0_33.0"}, "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": 2016060000964}, "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": "June 29 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 03 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 87966.3674568146}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America", "W.North-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": 33.0}, "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": 249.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "249.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 247.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 251.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.5, 32.75], [-108.97, 32.53], [-108.75, 32.0], [-108.97, 31.47], [-109.5, 31.25], [-110.03, 31.47], [-110.25, 32.0], [-110.03, 32.53], [-109.5, 32.75]]]]}, "2016-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.03, 34.03], [-112.5, 34.25], [-112.25, 34.15], [-112.18, 34.18], [-112.15, 34.25], [-112.25, 34.5], [-112.03, 35.03], [-111.5, 35.25], [-111.25, 35.15], [-111.0, 35.25], [-110.75, 35.15], [-110.5, 35.25], [-110.25, 35.15], [-110.0, 35.25], [-109.47, 35.03], [-109.25, 34.5], [-109.35, 34.25], [-109.25, 34.0], [-109.35, 33.75], [-109.25, 33.5], [-109.46, 33.0], [-109.32, 32.68], [-108.97, 32.53], [-108.82, 32.18], [-108.47, 32.03], [-108.25, 31.5], [-108.47, 30.97], [-109.0, 30.75], [-109.25, 30.85], [-109.5, 30.75], [-110.03, 30.97], [-110.18, 31.32], [-110.25, 31.35], [-110.5, 31.25], [-110.75, 31.35], [-111.0, 31.25], [-111.25, 31.35], [-111.5, 31.25], [-111.75, 31.35], [-112.0, 31.25], [-112.53, 31.47], [-112.75, 32.0], [-112.65, 32.25], [-112.68, 32.32], [-113.03, 32.47], [-113.25, 33.0], [-113.15, 33.25], [-113.25, 33.5], [-113.03, 34.03]]]]}, "2016-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.03, 34.03], [-112.5, 34.25], [-112.25, 34.15], [-112.18, 34.18], [-112.15, 34.25], [-112.25, 34.5], [-112.03, 35.03], [-111.5, 35.25], [-111.25, 35.15], [-111.0, 35.25], [-110.75, 35.15], [-110.68, 35.18], [-110.53, 35.53], [-110.0, 35.75], [-109.75, 35.65], [-109.5, 35.75], [-108.97, 35.53], [-108.75, 35.0], [-108.97, 34.47], [-109.32, 34.32], [-109.35, 34.25], [-109.25, 34.0], [-109.35, 33.75], [-109.25, 33.5], [-109.46, 33.0], [-109.32, 32.68], [-108.97, 32.53], [-108.82, 32.18], [-108.47, 32.03], [-108.25, 31.5], [-108.47, 30.97], [-109.0, 30.75], [-109.25, 30.85], [-109.5, 30.75], [-110.03, 30.97], [-110.18, 31.32], [-110.25, 31.35], [-110.5, 31.25], [-110.75, 31.35], [-111.0, 31.25], [-111.25, 31.35], [-111.5, 31.25], [-111.75, 31.35], [-112.0, 31.25], [-112.53, 31.47], [-112.75, 32.0], [-112.65, 32.25], [-112.68, 32.32], [-113.03, 32.47], [-113.25, 33.0], [-113.15, 33.25], [-113.25, 33.5], [-113.03, 34.03]]]]}, "2016-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.03, 34.03], [-112.5, 34.25], [-112.25, 34.15], [-112.18, 34.18], [-112.15, 34.25], [-112.25, 34.5], [-112.03, 35.03], [-111.5, 35.25], [-111.25, 35.15], [-111.0, 35.25], [-110.75, 35.15], [-110.68, 35.18], [-110.53, 35.53], [-110.0, 35.75], [-109.75, 35.65], [-109.5, 35.75], [-108.97, 35.53], [-108.75, 35.0], [-108.97, 34.47], [-109.32, 34.32], [-109.35, 34.25], [-109.25, 34.0], [-109.35, 33.75], [-109.25, 33.5], [-109.46, 33.0], [-109.32, 32.68], [-108.97, 32.53], [-108.82, 32.18], [-108.47, 32.03], [-108.25, 31.5], [-108.47, 30.97], [-109.0, 30.75], [-109.25, 30.85], [-109.5, 30.75], [-110.03, 30.97], [-110.18, 31.32], [-110.25, 31.35], [-110.5, 31.25], [-110.75, 31.35], [-111.0, 31.25], [-111.25, 31.35], [-111.5, 31.25], [-111.75, 31.35], [-112.0, 31.25], [-112.53, 31.47], [-112.75, 32.0], [-112.65, 32.25], [-112.68, 32.32], [-113.03, 32.47], [-113.25, 33.0], [-113.15, 33.25], [-113.25, 33.5], [-113.03, 34.03]]]]}, "2016-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.53, 34.47], [-110.75, 35.0], [-110.53, 35.53], [-110.0, 35.75], [-109.75, 35.65], [-109.5, 35.75], [-108.97, 35.53], [-108.75, 35.0], [-108.97, 34.47], [-109.5, 34.25], [-109.75, 34.35], [-110.0, 34.25], [-110.53, 34.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.939984248251619}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.46243064882734}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.98687553359389, 25.305962976251067, 23.50608901967513, 24.832123005716085, 22.858256461508972]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": 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standardized t2m anomalies.", "value": [-1.331191746010239, -2.8050535377670207, -3.5126336685247472, -2.8350889789644733, -1.632185235627274]}}