{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:50.202164", "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": "2017-May-25_to_2017-May-29_108.0_16.5"}, "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": 2017050000656}, "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 25 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 29 2017"}, "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": 56210.551869953866}, "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": ["Laos", "Vietnam"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": ["South China Sea"]}, "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": 16.5}, "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": 108.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "108.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 104.75}, "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": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.25, 19.0], [104.47, 19.53], [105.0, 19.75], [105.53, 19.53], [105.68, 19.18], [106.03, 19.03], [106.18, 18.68], [106.53, 18.53], [106.68, 18.18], [107.03, 18.03], [107.25, 17.5], [107.15, 17.25], [107.25, 17.0], [107.15, 16.75], [107.25, 16.5], [107.03, 15.97], [106.5, 15.75], [105.97, 15.97], [105.75, 16.5], [105.85, 16.75], [105.82, 16.82], [105.47, 16.97], [105.32, 17.32], [104.97, 17.47], [104.75, 18.0], [104.85, 18.25], [104.82, 18.32], [104.47, 18.47], [104.25, 19.0]]]]}, "2017-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.25, 19.0], [104.47, 19.53], [105.0, 19.75], [105.53, 19.53], [105.68, 19.18], [106.03, 19.03], [106.18, 18.68], [106.53, 18.53], [106.68, 18.18], [107.03, 18.03], [107.25, 17.5], [107.15, 17.25], [107.18, 17.18], [107.25, 17.15], [107.5, 17.25], [107.75, 17.15], [108.0, 17.25], [108.53, 17.03], [108.75, 16.5], [108.65, 16.25], [108.75, 16.0], [108.65, 15.75], [108.75, 15.5], [108.53, 14.97], [108.0, 14.75], [107.75, 14.85], [107.5, 14.75], [106.97, 14.97], [106.75, 15.5], [106.85, 15.75], [106.82, 15.82], [106.75, 15.85], [106.5, 15.75], [105.97, 15.97], [105.75, 16.5], [105.85, 16.75], [105.82, 16.82], [105.47, 16.97], [105.32, 17.32], [104.97, 17.47], [104.75, 18.0], [104.85, 18.25], [104.82, 18.32], [104.47, 18.47], [104.25, 19.0]]]]}, "2017-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.25, 19.0], [104.47, 19.53], [105.0, 19.75], [105.53, 19.53], [105.68, 19.18], [106.03, 19.03], [106.18, 18.68], [106.53, 18.53], [106.68, 18.18], [107.03, 18.03], [107.25, 17.5], [107.15, 17.25], [107.18, 17.18], [107.25, 17.15], [107.32, 17.18], [107.47, 17.53], [108.0, 17.75], [108.53, 17.53], [108.68, 17.18], [109.03, 17.03], [109.18, 16.68], [109.53, 16.53], [109.75, 16.0], [109.65, 15.75], [109.75, 15.5], [109.53, 14.97], [109.0, 14.75], [108.5, 14.96], [108.0, 14.75], [107.75, 14.85], [107.5, 14.75], [106.97, 14.97], [106.75, 15.5], [106.85, 15.75], [106.82, 15.82], [106.75, 15.85], [106.5, 15.75], [105.97, 15.97], [105.75, 16.5], [105.85, 16.75], [105.82, 16.82], [105.47, 16.97], [105.32, 17.32], [104.97, 17.47], [104.75, 18.0], [104.85, 18.25], [104.82, 18.32], [104.47, 18.47], [104.25, 19.0]]]]}, "2017-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.75, 17.0], [105.97, 17.53], [106.5, 17.75], [107.03, 17.53], [107.18, 17.18], [107.25, 17.15], [107.32, 17.18], [107.47, 17.53], [108.0, 17.75], [108.53, 17.53], [108.68, 17.18], [109.03, 17.03], [109.18, 16.68], [109.53, 16.53], [109.75, 16.0], [109.65, 15.75], [109.75, 15.5], [109.53, 14.97], [109.0, 14.75], [108.5, 14.96], [108.0, 14.75], [107.75, 14.85], [107.5, 14.75], [106.97, 14.97], [106.75, 15.5], [106.85, 15.75], [106.82, 15.82], [106.47, 15.97], [106.32, 16.32], [105.97, 16.47], [105.75, 17.0]]]]}, "2017-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.47, 15.97], [106.25, 16.5], [106.47, 17.03], [107.0, 17.25], [107.25, 17.15], [107.32, 17.18], [107.47, 17.53], [108.0, 17.75], [108.53, 17.53], [108.68, 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.66838643831165, -2.9020282678240465, -2.015275272237587, -1.7986318134394423, -1.4480291468424653]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.906562254141875, -3.79464754524156, -3.456758768912948, -2.4220302935078735, -1.7061259127659696]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9622526769604254, -1.9424854518496815, -1.5313341672852665, -1.673643856014391, -1.4676189929651908]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4642874275371534, -2.533695856042872, -1.800181009739731, -2.054136110848165, -1.8094047896159213]}}