{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:42.953338", "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": "2010-May-31_to_2010-Jun-02_108.5_29.5"}, "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": 2010050000981}, "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 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 02 2010"}, "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": 88226.01778795964}, "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": ["China"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 29.5}, "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": 108.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "108.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 103.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 109.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.75}, "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": {"2010-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.97, 31.53], [103.32, 31.68], [103.47, 32.03], [104.0, 32.25], [104.53, 32.03], [104.7, 31.63], [105.0, 31.75], [105.25, 31.65], [105.5, 31.75], [105.75, 31.65], [106.0, 31.75], [106.53, 31.53], [106.7, 31.13], [107.0, 31.25], [107.25, 31.15], [107.5, 31.25], [107.75, 31.15], [108.0, 31.25], [108.53, 31.03], [108.68, 30.68], [108.75, 30.65], [109.0, 30.75], [109.53, 30.53], [109.75, 30.0], [109.53, 29.47], [109.18, 29.32], [109.03, 28.97], [108.5, 28.75], [108.25, 28.85], [108.0, 28.75], [107.47, 28.97], [107.32, 29.32], [107.25, 29.35], [107.18, 29.32], [107.03, 28.97], [106.68, 28.82], [106.53, 28.47], [106.0, 28.25], [105.75, 28.35], [105.5, 28.25], [104.97, 28.47], [104.75, 29.0], [104.53, 28.47], [104.0, 28.25], [103.47, 28.47], [103.25, 29.0], [103.35, 29.25], [103.32, 29.32], [102.97, 29.47], [102.75, 30.0], [102.96, 30.5], [102.75, 31.0], [102.97, 31.53]], [[104.85, 29.25], [104.8, 29.38], [104.68, 29.32], [104.65, 29.25], [104.75, 29.0], [104.85, 29.25]]]]}, "2010-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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"2010-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.97, 31.53], [103.32, 31.68], [103.47, 32.03], [104.0, 32.25], [104.53, 32.03], [104.7, 31.63], [105.0, 31.75], [105.25, 31.65], [105.5, 31.75], [105.75, 31.65], [106.0, 31.75], [106.53, 31.53], [106.7, 31.13], [107.0, 31.25], [107.25, 31.15], [107.5, 31.25], [107.75, 31.15], [108.0, 31.25], [108.53, 31.03], [108.68, 30.68], [108.75, 30.65], [109.0, 30.75], [109.53, 30.53], [109.75, 30.0], [109.53, 29.47], [109.18, 29.32], [109.03, 28.97], [108.5, 28.75], [108.25, 28.85], [108.0, 28.75], [107.47, 28.97], [107.32, 29.32], [107.25, 29.35], [107.18, 29.32], [107.03, 28.97], [106.68, 28.82], [106.53, 28.47], [106.0, 28.25], [105.75, 28.35], [105.5, 28.25], [104.97, 28.47], [104.75, 29.0], [104.53, 28.47], [104.0, 28.25], [103.47, 28.47], [103.25, 29.0], [103.35, 29.25], [103.32, 29.32], [102.97, 29.47], [102.75, 30.0], [102.96, 30.5], [102.75, 31.0], [102.97, 31.53]], [[104.85, 29.25], [104.8, 29.38], [104.68, 29.32], [104.65, 29.25], [104.75, 29.0], [104.85, 29.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.454757644191602}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.326582231473059}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.44717218701362, 17.886700639912704, 18.940179058333626]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.477852379608464, 12.194849732366777, 12.222357637434868]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.097511665303678, -4.859741917399806, -4.022493111715691]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.1169845127244, -5.454757644191602, -5.211956559535338]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6734503117330863, -2.0249503486991944, -1.7472688304332895]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0422283731919513, -2.3853389869434998, -2.2286886288055796]}}