{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:37.556993", "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": "2015-Aug-18_to_2015-Aug-22_99.5_38.0"}, "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": 2015080000719}, "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": "August 18 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 22 2015"}, "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": 61089.51827254115}, "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", "E.C.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": 38.0}, "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": 99.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "99.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 97.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 101.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 38.47], [97.75, 39.0], [97.97, 39.53], [98.5, 39.75], 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36.75], [102.25, 36.5], [102.03, 35.97], [101.5, 35.75], [100.97, 35.97], [100.82, 36.32], [100.75, 36.35], [100.5, 36.25], [100.25, 36.35], [100.0, 36.25], [99.75, 36.35], [99.5, 36.25], [99.25, 36.35], [99.0, 36.25], [98.47, 36.47], [98.32, 36.82], [97.97, 36.97], [97.75, 37.5], [97.85, 37.75], [97.82, 37.82], [97.47, 37.97], [97.25, 38.5]]]]}, "2015-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.25, 38.5], [97.47, 39.03], [97.82, 39.18], [97.97, 39.53], [98.5, 39.75], [98.75, 39.65], [99.0, 39.75], [99.53, 39.53], [99.68, 39.18], [99.75, 39.15], [100.0, 39.25], [100.53, 39.03], [100.68, 38.68], [101.03, 38.53], [101.18, 38.18], [101.53, 38.03], [101.68, 37.68], [102.03, 37.53], [102.25, 37.0], [102.15, 36.75], [102.25, 36.5], [102.03, 35.97], [101.5, 35.75], [100.97, 35.97], [100.82, 36.32], [100.75, 36.35], [100.5, 36.25], [100.25, 36.35], [100.0, 36.25], [99.75, 36.35], [99.5, 36.25], [99.25, 36.35], [99.0, 36.25], [98.47, 36.47], [98.32, 36.82], [97.97, 36.97], [97.75, 37.5], [97.85, 37.75], [97.82, 37.82], [97.47, 37.97], [97.25, 38.5]]]]}, "2015-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.25, 38.5], [97.47, 39.03], [98.0, 39.25], [98.25, 39.15], [98.5, 39.25], [98.75, 39.15], [99.0, 39.25], [99.25, 39.15], [99.5, 39.25], [99.75, 39.15], [100.0, 39.25], [100.53, 39.03], [100.75, 38.5], [100.65, 38.25], [100.68, 38.18], [101.03, 38.03], [101.18, 37.68], [101.25, 37.65], [101.5, 37.75], [102.03, 37.53], [102.25, 37.0], [102.15, 36.75], [102.25, 36.5], [102.03, 35.97], [101.5, 35.75], [100.97, 35.97], [100.82, 36.32], [100.47, 36.47], [100.32, 36.82], [100.25, 36.85], [100.18, 36.82], [100.03, 36.47], [99.5, 36.25], [99.25, 36.35], [99.0, 36.25], [98.47, 36.47], [98.32, 36.82], [97.97, 36.97], [97.75, 37.5], [97.85, 37.75], [97.82, 37.82], [97.47, 37.97], [97.25, 38.5]]]]}, "2015-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.25, 38.5], [97.47, 39.03], [98.0, 39.25], [98.25, 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daily evolution of mean t2m.", "value": [5.341113583804713, 3.506210364210915, 2.723305469288448, 3.175266416339184, 2.5638863617422203]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.9092126112134906, -0.5399168859419774, -2.810647411031198, -1.6941448217549464, -1.9707135289198163]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2247756962609273, -4.125186613651604, -4.867705298539631, -4.118290651988739, -4.556730551256611]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.280163288646065, -4.791534533461004, -7.019174984605797, -5.99938236595591, -6.279989280392783]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4267696184806664, -1.7303703246701738, -2.009640878697184, -1.6618981854050088, -1.8941218015044818]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7615108397228265, -2.3986968365018604, -2.618516557986777, -2.2315010367563786, -2.3924485596598553]}}