{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:40.357566", "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-Feb-01_to_2014-Feb-05_241.5_38.5"}, "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": 2014020000142}, "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": "February 01 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 05 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": 65655.33029323105}, "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": ["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": 38.5}, "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": 241.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "241.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 239.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 242.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.15, 39.25], [-121.25, 39.5], [-121.03, 40.03], [-120.5, 40.25], [-120.25, 40.15], [-120.0, 40.25], [-119.75, 40.15], [-119.5, 40.25], [-119.25, 40.15], [-119.0, 40.25], [-118.47, 40.03], [-118.32, 39.68], [-117.97, 39.53], [-117.82, 39.18], [-117.47, 39.03], [-117.25, 38.5], [-117.47, 37.97], [-117.82, 37.82], [-117.85, 37.75], [-117.75, 37.5], [-117.85, 37.25], [-117.82, 37.18], [-117.47, 37.03], [-117.25, 36.5], [-117.35, 36.25], [-117.25, 36.0], [-117.47, 35.47], [-118.0, 35.25], [-118.25, 35.35], [-118.5, 35.25], [-119.03, 35.47], [-119.25, 36.0], [-119.15, 36.25], [-119.18, 36.32], [-119.25, 36.35], [-119.5, 36.25], [-120.03, 36.47], [-120.25, 37.0], [-120.15, 37.25], [-120.18, 37.32], [-120.53, 37.47], [-120.68, 37.82], [-121.03, 37.97], [-121.25, 38.5], [-121.15, 38.75], [-121.25, 39.0], [-121.15, 39.25]]]]}, "2014-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.15, 39.25], [-121.25, 39.5], [-121.03, 40.03], [-120.5, 40.25], [-120.25, 40.15], [-120.0, 40.25], [-119.75, 40.15], [-119.5, 40.25], [-119.25, 40.15], [-119.0, 40.25], [-118.47, 40.03], [-118.32, 39.68], [-117.97, 39.53], [-117.82, 39.18], [-117.47, 39.03], [-117.25, 38.5], [-117.47, 37.97], [-117.82, 37.82], [-117.85, 37.75], [-117.75, 37.5], [-117.85, 37.25], [-117.82, 37.18], [-117.47, 37.03], [-117.25, 36.5], [-117.35, 36.25], [-117.25, 36.0], [-117.47, 35.47], [-118.0, 35.25], [-118.25, 35.35], [-118.5, 35.25], [-119.03, 35.47], [-119.25, 36.0], [-119.15, 36.25], [-119.18, 36.32], [-119.25, 36.35], [-119.5, 36.25], [-120.03, 36.47], [-120.25, 37.0], [-120.15, 37.25], [-120.18, 37.32], [-120.53, 37.47], [-120.68, 37.82], [-121.03, 37.97], [-121.25, 38.5], [-121.15, 38.75], [-121.25, 39.0], [-121.15, 39.25]]]]}, "2014-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.15, 39.25], [-121.25, 39.5], [-121.03, 40.03], [-120.5, 40.25], [-120.25, 40.15], [-120.0, 40.25], [-119.75, 40.15], [-119.5, 40.25], [-119.25, 40.15], [-119.0, 40.25], [-118.47, 40.03], [-118.32, 39.68], [-117.97, 39.53], [-117.82, 39.18], [-117.47, 39.03], [-117.25, 38.5], [-117.47, 37.97], [-117.82, 37.82], [-117.85, 37.75], [-117.75, 37.5], [-117.85, 37.25], [-117.82, 37.18], [-117.47, 37.03], [-117.25, 36.5], [-117.35, 36.25], [-117.25, 36.0], [-117.47, 35.47], [-118.0, 35.25], [-118.25, 35.35], [-118.5, 35.25], [-119.03, 35.47], [-119.25, 36.0], [-119.15, 36.25], [-119.18, 36.32], [-119.25, 36.35], [-119.5, 36.25], [-120.03, 36.47], [-120.25, 37.0], [-120.15, 37.25], [-120.18, 37.32], [-120.53, 37.47], [-120.68, 37.82], [-121.03, 37.97], [-121.25, 38.5], [-121.15, 38.75], [-121.25, 39.0], [-121.15, 39.25]]]]}, "2014-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.15, 39.25], [-121.25, 39.5], [-121.03, 40.03], [-120.5, 40.25], [-120.25, 40.15], [-120.0, 40.25], [-119.75, 40.15], [-119.5, 40.25], [-118.97, 40.03], [-118.82, 39.68], [-118.75, 39.65], [-118.5, 39.75], [-117.97, 39.53], [-117.82, 39.18], [-117.47, 39.03], [-117.25, 38.5], [-117.47, 37.97], [-117.82, 37.82], [-117.85, 37.75], [-117.75, 37.5], [-117.85, 37.25], [-117.82, 37.18], [-117.47, 37.03], [-117.25, 36.5], [-117.35, 36.25], [-117.25, 36.0], [-117.47, 35.47], [-118.0, 35.25], [-118.53, 35.47], [-118.68, 35.82], [-119.03, 35.97], [-119.18, 36.32], [-119.25, 36.35], [-119.5, 36.25], [-120.03, 36.47], [-120.25, 37.0], [-120.15, 37.25], [-120.18, 37.32], [-120.53, 37.47], [-120.68, 37.82], [-121.03, 37.97], [-121.25, 38.5], [-121.15, 38.75], [-121.25, 39.0], [-121.15, 39.25]]]]}, "2014-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.15, 39.25], [-121.25, 39.5], [-121.03, 40.03], [-120.5, 40.25], [-120.25, 40.15], [-120.0, 40.25], [-119.75, 40.15], [-119.5, 40.25], [-118.97, 40.03], [-118.82, 39.68], [-118.75, 39.65], [-118.5, 39.75], [-117.97, 39.53], [-117.82, 39.18], [-117.47, 39.03], [-117.25, 38.5], [-117.47, 37.97], [-117.82, 37.82], [-117.97, 37.47], [-118.37, 37.3], [-118.3, 37.13], [-118.0, 37.25], [-117.47, 37.03], [-117.25, 36.5], [-117.47, 35.97], [-118.0, 35.75], [-118.53, 35.97], [-118.7, 36.38], [-119.0, 36.25], [-119.25, 36.35], [-119.5, 36.25], [-120.03, 36.47], [-120.25, 37.0], [-120.15, 37.25], [-120.18, 37.32], [-120.53, 37.47], [-120.68, 37.82], [-121.03, 37.97], [-121.25, 38.5], [-121.15, 38.75], [-121.25, 39.0], [-121.15, 39.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.212134603373329}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.290648149887297}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-7.598856737818551, -7.472976332777137, -6.035109044602962, -6.31626013136048, -5.385971472353219]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-13.558797351856015, -14.070246362367186, -11.910454699217212, -12.84270068005327, -11.700090242598492]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.9308863595349415, -7.9631293758818105, -6.652704327855108, -6.938717132865119, -6.8196148427915375]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.957708633283119, -13.212134603373329, -10.614154188949271, -12.427785434321152, -11.547797677288486]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1235351795249926, -2.11402343999031, -1.8048456961196921, -1.8624858856277426, -1.8644903886442132]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7137492787841326, -2.7787251551651417, -2.5630055606712614, -2.58903406766526, -2.446743849545774]}}