{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:04.851278", "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": "2019-Jul-23_to_2019-Jul-25_278.0_36.5"}, "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": 2019070000835}, "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 23 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 25 2019"}, "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": 69293.37101931934}, "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": ["E.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": 36.5}, "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": 278.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "278.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 276.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 280.75}, "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": 38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-83.53, 37.03], [-83.18, 37.18], [-83.15, 37.25], [-83.25, 37.5], [-83.03, 38.03], [-82.5, 38.25], [-82.25, 38.15], [-82.18, 38.18], [-82.03, 38.53], [-81.5, 38.75], [-81.25, 38.65], [-81.18, 38.68], [-81.03, 39.03], [-80.5, 39.25], [-79.97, 39.03], [-79.75, 38.5], [-79.85, 38.25], [-79.75, 38.0], [-79.85, 37.75], [-79.75, 37.5], [-79.85, 37.25], [-79.75, 37.0], [-79.87, 36.7], [-79.75, 36.65], [-79.5, 36.75], [-78.97, 36.53], [-78.75, 36.0], [-78.97, 35.47], [-79.5, 35.25], [-79.75, 35.35], [-79.82, 35.32], [-79.97, 34.97], [-80.5, 34.75], [-80.75, 34.85], [-81.0, 34.75], [-81.53, 34.97], [-81.68, 35.32], [-82.0, 35.46], [-82.5, 35.25], [-82.75, 35.35], [-83.0, 35.25], [-83.53, 35.47], [-83.75, 36.0], [-83.65, 36.25], [-83.75, 36.5], [-83.53, 37.03]]]]}, "2019-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-83.53, 37.03], [-83.18, 37.18], [-83.15, 37.25], [-83.25, 37.5], [-83.03, 38.03], [-82.5, 38.25], [-82.25, 38.15], [-82.18, 38.18], [-82.03, 38.53], [-81.5, 38.75], [-81.25, 38.65], [-81.18, 38.68], [-81.03, 39.03], [-80.5, 39.25], [-79.97, 39.03], [-79.75, 38.5], [-79.85, 38.25], [-79.75, 38.0], [-79.85, 37.75], [-79.75, 37.5], [-79.85, 37.25], [-79.75, 37.0], [-79.87, 36.7], [-79.75, 36.65], [-79.5, 36.75], [-78.97, 36.53], [-78.75, 36.0], [-78.97, 35.47], [-79.5, 35.25], [-79.75, 35.35], [-79.82, 35.32], [-79.97, 34.97], [-80.5, 34.75], [-80.75, 34.85], [-81.0, 34.75], [-81.53, 34.97], [-81.68, 35.32], [-82.0, 35.46], [-82.5, 35.25], [-82.75, 35.35], [-83.0, 35.25], [-83.53, 35.47], [-83.75, 36.0], [-83.65, 36.25], [-83.75, 36.5], [-83.53, 37.03]]]]}, "2019-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-83.53, 37.03], [-83.18, 37.18], [-83.15, 37.25], [-83.25, 37.5], [-83.03, 38.03], [-82.5, 38.25], [-82.25, 38.15], [-82.18, 38.18], [-82.03, 38.53], [-81.5, 38.75], [-81.25, 38.65], [-81.18, 38.68], [-81.03, 39.03], [-80.5, 39.25], [-79.97, 39.03], [-79.75, 38.5], [-79.85, 38.25], [-79.75, 38.0], [-79.85, 37.75], [-79.75, 37.5], [-79.85, 37.25], [-79.75, 37.0], [-79.87, 36.7], [-79.75, 36.65], [-79.5, 36.75], [-78.97, 36.53], [-78.75, 36.0], [-78.97, 35.47], [-79.5, 35.25], [-79.75, 35.35], [-79.82, 35.32], [-79.97, 34.97], [-80.5, 34.75], [-80.75, 34.85], [-81.0, 34.75], [-81.53, 34.97], [-81.68, 35.32], [-82.0, 35.46], [-82.5, 35.25], [-82.75, 35.35], [-83.0, 35.25], [-83.53, 35.47], [-83.75, 36.0], [-83.65, 36.25], [-83.75, 36.5], [-83.53, 37.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.802692466479982}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.5574991542244345}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.960432179073734, 19.104765042218162, 19.830472773985264]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.337959659945057, 16.755995777307874, 17.282281655412305]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.268605225777638, -4.088140741046151, -3.3157514958495153]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.100457668319677, -4.802692466479982, -3.850134365634119]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.559638936458805, -1.9438483532237307, -1.5820038680222102]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9066414019405995, -2.1732528079348286, -1.8961471397921108]}}