{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:47.648360", "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": "2014-Jul-02_to_2014-Jul-06_269.0_35.5"}, "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": 2014070000219}, "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 02 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2014"}, "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": 612695.1459552271}, "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": ["C.North-America", "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": 35.5}, "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": 269.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "269.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 261.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 275.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.75, 37.5], [-98.53, 38.03], [-98.18, 38.18], [-98.03, 38.53], [-97.68, 38.68], [-97.53, 39.03], [-97.18, 39.18], [-97.03, 39.53], [-96.5, 39.75], [-96.25, 39.65], [-96.0, 39.75], [-95.75, 39.65], [-95.68, 39.68], [-95.53, 40.03], [-95.0, 40.25], [-94.75, 40.15], [-94.5, 40.25], [-94.25, 40.15], [-94.18, 40.18], [-94.15, 40.25], [-94.25, 40.5], [-94.15, 40.75], [-94.18, 40.82], [-94.53, 40.97], [-94.75, 41.5], [-94.65, 41.75], [-94.75, 42.0], [-94.53, 42.53], [-94.18, 42.68], [-94.03, 43.03], [-93.68, 43.18], [-93.53, 43.53], [-93.0, 43.75], [-92.5, 43.54], [-92.0, 43.75], [-91.47, 43.53], [-91.32, 43.18], [-91.25, 43.15], [-91.0, 43.25], [-90.47, 43.03], [-90.32, 42.68], [-89.97, 42.53], [-89.75, 42.0], [-89.87, 41.7], [-89.75, 41.65], [-89.5, 41.75], [-88.97, 41.53], [-88.75, 41.0], [-88.97, 40.47], [-89.5, 40.25], [-89.75, 40.35], [-89.82, 40.32], [-89.97, 39.97], [-90.32, 39.82], [-90.47, 39.47], [-90.82, 39.32], [-90.97, 38.97], [-91.32, 38.82], [-91.47, 38.47], [-92.0, 38.25], [-92.25, 38.35], [-92.5, 38.25], [-92.75, 38.35], [-92.82, 38.32], [-92.97, 37.97], [-93.5, 37.75], [-93.75, 37.85], [-93.82, 37.82], [-93.97, 37.47], [-94.5, 37.25], [-94.75, 37.35], [-95.0, 37.25], [-95.25, 37.35], [-95.32, 37.32], [-95.47, 36.97], [-95.82, 36.82], [-95.97, 36.47], [-96.5, 36.25], [-96.75, 36.35], [-97.0, 36.25], [-97.25, 36.35], [-97.5, 36.25], [-98.03, 36.47], [-98.18, 36.82], [-98.53, 36.97], [-98.75, 37.5]], [[-91.18, 40.68], [-91.15, 40.75], [-91.2, 40.88], [-91.32, 40.82], [-91.35, 40.75], [-91.32, 40.68], [-91.25, 40.65], [-91.18, 40.68]]]]}, "2014-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.75, 37.5], [-98.53, 38.03], [-98.18, 38.18], [-98.03, 38.53], [-97.68, 38.68], [-97.53, 39.03], [-97.18, 39.18], [-97.03, 39.53], [-96.5, 39.75], [-96.25, 39.65], [-96.0, 39.75], [-95.75, 39.65], [-95.68, 39.68], [-95.53, 40.03], [-95.0, 40.25], [-94.75, 40.15], [-94.5, 40.25], [-94.25, 40.15], [-94.18, 40.18], [-94.15, 40.25], [-94.25, 40.5], [-94.15, 40.75], [-94.18, 40.82], [-94.53, 40.97], [-94.75, 41.5], [-94.65, 41.75], [-94.75, 42.0], [-94.53, 42.53], [-94.18, 42.68], [-94.03, 43.03], [-93.68, 43.18], [-93.53, 43.53], [-93.0, 43.75], [-92.5, 43.54], [-92.0, 43.75], [-91.47, 43.53], [-91.32, 43.18], [-91.25, 43.15], [-91.0, 43.25], [-90.47, 43.03], [-90.32, 42.68], [-89.97, 42.53], [-89.75, 42.0], [-89.87, 41.7], [-89.75, 41.65], [-89.5, 41.75], [-88.97, 41.53], [-88.82, 41.18], [-88.75, 41.15], [-88.5, 41.25], [-87.97, 41.03], [-87.75, 40.5], [-87.87, 40.2], [-87.75, 40.15], [-87.5, 40.25], [-86.97, 40.03], [-86.75, 39.5], [-86.85, 39.25], [-86.82, 39.18], [-86.5, 39.04], [-86.18, 39.18], [-86.03, 39.53], [-85.5, 39.75], [-85.25, 39.65], [-85.0, 39.75], [-84.47, 39.53], [-84.25, 39.0], [-84.35, 38.75], [-84.25, 38.5], [-84.47, 37.97], [-85.0, 37.75], [-85.25, 37.85], [-85.32, 37.82], [-85.47, 37.47], [-85.82, 37.32], [-85.97, 36.97], [-86.32, 36.82], [-86.47, 36.47], [-87.0, 36.25], [-87.25, 36.35], [-87.32, 36.32], [-87.47, 35.97], [-87.82, 35.82], [-87.85, 35.75], [-87.75, 35.5], [-87.97, 34.97], [-88.32, 34.82], [-88.35, 34.75], [-88.25, 34.5], [-88.47, 33.97], [-89.0, 33.75], [-89.25, 33.85], [-89.32, 33.82], [-89.47, 33.47], [-89.82, 33.32], [-89.97, 32.97], [-90.5, 32.75], [-90.75, 32.85], [-91.0, 32.75], [-91.25, 32.85], [-91.5, 32.75], [-91.75, 32.85], [-91.82, 32.82], [-91.97, 32.47], [-92.5, 32.25], [-93.03, 32.47], [-93.25, 33.0], [-93.15, 33.25], [-93.25, 33.5], [-93.15, 33.75], [-93.18, 33.82], [-93.5, 33.96], [-94.0, 33.75], [-94.53, 33.97], [-94.68, 34.32], [-95.03, 34.47], [-95.18, 34.82], [-95.53, 34.97], [-95.75, 35.5], [-95.53, 36.03], [-95.18, 36.18], [-95.03, 36.53], [-94.5, 36.75], [-94.25, 36.65], [-94.18, 36.68], [-94.15, 36.75], [-94.25, 37.0], [-94.07, 37.43], [-94.5, 37.25], [-94.75, 37.35], [-95.0, 37.25], [-95.25, 37.35], [-95.32, 37.32], [-95.47, 36.97], [-95.82, 36.82], [-95.97, 36.47], [-96.5, 36.25], [-96.75, 36.35], [-97.0, 36.25], [-97.25, 36.35], [-97.5, 36.25], [-98.03, 36.47], [-98.18, 36.82], [-98.53, 36.97], [-98.75, 37.5]], [[-93.07, 37.93], [-93.5, 37.75], [-93.25, 37.65], [-93.18, 37.68], [-93.07, 37.93]], [[-93.75, 37.85], [-93.82, 37.82], [-93.93, 37.57], [-93.5, 37.75], [-93.75, 37.85]], [[-92.68, 38.18], [-92.62, 38.3], [-92.75, 38.35], [-92.82, 38.32], [-92.93, 38.07], [-92.68, 38.18]], [[-91.18, 40.68], [-91.15, 40.75], [-91.2, 40.88], [-91.32, 40.82], [-91.35, 40.75], [-91.32, 40.68], [-91.25, 40.65], [-91.18, 40.68]]]]}, "2014-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.75, 37.5], [-98.53, 38.03], [-98.18, 38.18], [-98.03, 38.53], [-97.68, 38.68], [-97.53, 39.03], [-97.18, 39.18], [-97.03, 39.53], [-96.5, 39.75], [-96.25, 39.65], [-96.0, 39.75], [-95.75, 39.65], [-95.68, 39.68], [-95.53, 40.03], [-95.0, 40.25], [-94.75, 40.15], [-94.5, 40.25], [-94.25, 40.15], [-94.18, 40.18], [-94.15, 40.25], [-94.25, 40.5], [-94.15, 40.75], [-94.18, 40.82], [-94.53, 40.97], [-94.75, 41.5], [-94.65, 41.75], [-94.75, 42.0], [-94.53, 42.53], [-94.18, 42.68], [-94.03, 43.03], [-93.68, 43.18], [-93.53, 43.53], [-93.0, 43.75], [-92.5, 43.54], [-92.0, 43.75], [-91.47, 43.53], [-91.32, 43.18], [-91.25, 43.15], [-91.0, 43.25], [-90.47, 43.03], [-90.32, 42.68], [-89.97, 42.53], [-89.75, 42.0], [-89.87, 41.7], [-89.75, 41.65], [-89.5, 41.75], [-88.97, 41.53], [-88.82, 41.18], [-88.75, 41.15], [-88.5, 41.25], [-87.97, 41.03], [-87.75, 40.5], [-87.87, 40.2], [-87.75, 40.15], [-87.5, 40.25], [-86.97, 40.03], [-86.75, 39.5], [-86.85, 39.25], [-86.82, 39.18], [-86.5, 39.04], [-86.18, 39.18], [-86.03, 39.53], [-85.5, 39.75], [-85.25, 39.65], [-85.0, 39.75], [-84.47, 39.53], [-84.25, 39.0], [-84.35, 38.75], [-84.25, 38.5], [-84.47, 37.97], [-85.0, 37.75], [-85.25, 37.85], [-85.32, 37.82], [-85.47, 37.47], [-85.82, 37.32], [-85.97, 36.97], [-86.32, 36.82], [-86.47, 36.47], [-87.0, 36.25], [-87.25, 36.35], [-87.32, 36.32], [-87.47, 35.97], [-87.82, 35.82], [-87.85, 35.75], [-87.75, 35.5], [-87.85, 35.25], [-87.75, 35.0], [-87.97, 34.47], [-88.32, 34.32], [-88.35, 34.25], [-88.25, 34.0], [-88.35, 33.75], [-88.25, 33.5], [-88.47, 32.97], [-88.82, 32.82], [-88.97, 32.47], [-89.32, 32.32], [-89.47, 31.97], [-89.82, 31.82], [-89.97, 31.47], [-90.5, 31.25], [-91.0, 31.46], [-91.5, 31.25], [-91.75, 31.35], [-92.0, 31.25], [-92.53, 31.47], [-92.68, 31.82], [-93.03, 31.97], [-93.25, 32.5], [-93.15, 32.75], [-93.25, 33.0], [-93.15, 33.25], [-93.25, 33.5], [-93.15, 33.75], [-93.18, 33.82], [-93.5, 33.96], [-94.0, 33.75], [-94.53, 33.97], [-94.68, 34.32], [-95.03, 34.47], [-95.18, 34.82], [-95.53, 34.97], [-95.75, 35.5], [-95.53, 36.03], [-95.18, 36.18], [-95.03, 36.53], [-94.5, 36.75], [-94.25, 36.65], [-94.18, 36.68], [-94.15, 36.75], [-94.25, 37.0], [-94.07, 37.43], [-94.5, 37.25], [-94.75, 37.35], [-95.0, 37.25], [-95.25, 37.35], [-95.32, 37.32], [-95.47, 36.97], [-95.82, 36.82], [-95.97, 36.47], [-96.5, 36.25], [-96.75, 36.35], [-97.0, 36.25], [-97.25, 36.35], [-97.5, 36.25], [-98.03, 36.47], [-98.18, 36.82], [-98.53, 36.97], [-98.75, 37.5]], [[-93.07, 37.93], [-93.5, 37.75], [-93.25, 37.65], [-93.18, 37.68], [-93.07, 37.93]], [[-93.75, 37.85], [-93.82, 37.82], [-93.93, 37.57], [-93.5, 37.75], [-93.75, 37.85]], [[-92.68, 38.18], [-92.62, 38.3], [-92.75, 38.35], [-92.82, 38.32], [-92.93, 38.07], [-92.68, 38.18]], [[-91.18, 40.68], [-91.15, 40.75], [-91.2, 40.88], [-91.32, 40.82], [-91.35, 40.75], [-91.32, 40.68], [-91.25, 40.65], [-91.18, 40.68]]]]}, "2014-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.75, 35.5], [-95.53, 36.03], [-95.18, 36.18], [-95.03, 36.53], [-94.5, 36.75], [-94.25, 36.65], [-94.18, 36.68], [-94.15, 36.75], [-94.25, 37.0], [-94.03, 37.53], [-93.5, 37.75], [-93.25, 37.65], [-93.18, 37.68], [-93.03, 38.03], [-92.68, 38.18], [-92.62, 38.3], [-93.03, 38.47], [-93.25, 39.0], [-93.15, 39.25], [-93.18, 39.32], [-93.53, 39.47], [-93.75, 40.0], [-93.65, 40.25], [-93.75, 40.5], [-93.65, 40.75], [-93.75, 41.0], [-93.65, 41.25], [-93.75, 41.5], [-93.65, 41.75], [-93.75, 42.0], [-93.65, 42.25], [-93.75, 42.5], [-93.53, 43.03], [-93.0, 43.25], [-92.7, 43.12], [-92.53, 43.53], [-92.0, 43.75], [-91.47, 43.53], [-91.32, 43.18], [-91.25, 43.15], [-91.0, 43.25], [-90.47, 43.03], [-90.32, 42.68], [-89.97, 42.53], [-89.75, 42.0], [-89.87, 41.7], [-89.75, 41.65], [-89.5, 41.75], [-88.97, 41.53], [-88.82, 41.18], [-88.75, 41.15], [-88.5, 41.25], [-87.97, 41.03], [-87.75, 40.5], [-87.87, 40.2], [-87.75, 40.15], [-87.5, 40.25], [-86.97, 40.03], [-86.75, 39.5], [-86.85, 39.25], [-86.82, 39.18], [-86.5, 39.04], [-86.18, 39.18], [-86.03, 39.53], [-85.5, 39.75], [-85.25, 39.65], [-85.0, 39.75], [-84.47, 39.53], [-84.25, 39.0], [-84.35, 38.75], [-84.25, 38.5], [-84.47, 37.97], [-85.0, 37.75], [-85.25, 37.85], [-85.32, 37.82], [-85.47, 37.47], [-85.82, 37.32], [-85.97, 36.97], [-86.32, 36.82], [-86.47, 36.47], [-87.0, 36.25], [-87.25, 36.35], [-87.32, 36.32], [-87.47, 35.97], [-87.82, 35.82], [-87.85, 35.75], [-87.75, 35.5], [-87.85, 35.25], [-87.75, 35.0], [-87.97, 34.47], [-88.32, 34.32], [-88.35, 34.25], [-88.25, 34.0], [-88.35, 33.75], [-88.25, 33.5], [-88.47, 32.97], [-88.82, 32.82], [-88.97, 32.47], [-89.32, 32.32], [-89.47, 31.97], [-89.82, 31.82], [-89.97, 31.47], [-90.5, 31.25], [-91.0, 31.46], [-91.5, 31.25], [-91.75, 31.35], [-92.0, 31.25], [-92.53, 31.47], [-92.68, 31.82], [-93.03, 31.97], [-93.25, 32.5], [-93.15, 32.75], [-93.25, 33.0], [-93.15, 33.25], [-93.25, 33.5], [-93.15, 33.75], [-93.18, 33.82], [-93.5, 33.96], [-94.0, 33.75], [-94.53, 33.97], [-94.68, 34.32], [-95.03, 34.47], [-95.18, 34.82], [-95.53, 34.97], [-95.75, 35.5]], [[-91.18, 40.68], [-91.15, 40.75], [-91.2, 40.88], [-91.32, 40.82], [-91.35, 40.75], [-91.32, 40.68], [-91.25, 40.65], [-91.18, 40.68]]]]}, "2014-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.53, 34.97], [-94.75, 35.5], [-94.53, 36.03], [-94.0, 36.25], [-93.75, 36.15], [-93.68, 36.18], [-93.53, 36.53], [-93.0, 36.75], [-92.75, 36.65], [-92.68, 36.68], [-92.53, 37.03], [-92.0, 37.25], [-91.75, 37.15], [-91.68, 37.18], [-91.53, 37.53], [-91.18, 37.68], [-91.03, 38.03], [-90.5, 38.25], [-90.25, 38.15], [-90.18, 38.18], [-90.03, 38.53], [-89.5, 38.75], [-88.97, 38.53], [-88.82, 38.18], [-88.75, 38.15], [-88.5, 38.25], [-87.97, 38.03], [-87.75, 37.5], [-87.85, 37.25], [-87.75, 37.0], [-87.85, 36.75], [-87.75, 36.5], [-87.85, 36.25], [-87.75, 36.0], [-87.85, 35.75], [-87.75, 35.5], [-87.85, 35.25], [-87.75, 35.0], [-87.97, 34.47], [-88.32, 34.32], [-88.35, 34.25], [-88.25, 34.0], [-88.35, 33.75], [-88.25, 33.5], [-88.47, 32.97], [-88.82, 32.82], [-88.97, 32.47], [-89.32, 32.32], [-89.47, 31.97], [-89.82, 31.82], [-89.97, 31.47], [-90.5, 31.25], [-91.0, 31.46], [-91.5, 31.25], [-91.75, 31.35], [-92.0, 31.25], [-92.53, 31.47], [-92.68, 31.82], [-93.03, 31.97], [-93.25, 32.5], [-93.15, 32.75], [-93.25, 33.0], [-93.15, 33.25], [-93.25, 33.5], [-93.04, 34.0], [-93.25, 34.5], [-93.15, 34.75], [-93.18, 34.82], [-93.25, 34.85], [-93.5, 34.75], [-93.75, 34.85], [-94.0, 34.75], [-94.53, 34.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.868352625166722}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.774331247206456}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.09988056391802, 20.03000601377471, 21.122023350113295, 21.454377074882927, 23.72266289673786]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.31232439249851, 16.41589364919389, 18.31394948246418, 17.887180511044733, 22.18710277635904]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.396511030457382, -5.448454514179865, -4.62321309653174, -4.519664954349166, -3.491023083428034]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.507423098002732, -7.868352625166722, -6.362869293825213, -5.831154676973824, -4.813550539414393]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.783652683668604, -2.062456262310885, -1.9181813958043605, -1.9821828788952147, -1.8696230226603]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4168392061126736, -2.8309881970430806, -2.843939522432977, -3.171518481425655, -2.527958024067937]}}