{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:53.959298", "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": "2021-Jan-16_to_2021-Jan-19_116.0_5.5"}, "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": 2021010000646}, "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": "January 16 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 64725.715282941164}, "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": ["Brunei Darussalam", "Indonesia", "Malaysia"]}, "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": 5.5}, "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": 116.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 113.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 116.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, 4.53], [113.82, 4.68], [113.97, 5.03], [114.32, 5.18], [114.47, 5.53], [114.82, 5.68], [114.97, 6.03], [115.32, 6.18], [115.47, 6.53], [116.0, 6.75], [116.53, 6.53], [116.75, 6.0], [116.65, 5.75], [116.68, 5.68], [117.03, 5.53], [117.25, 5.0], [117.03, 4.47], [116.5, 4.25], [116.25, 4.35], [116.18, 4.32], [116.15, 4.25], [116.25, 4.0], [116.15, 3.75], [116.25, 3.5], [116.15, 3.25], [116.25, 3.0], [116.03, 2.47], [115.5, 2.25], [115.25, 2.35], [115.0, 2.25], [114.75, 2.35], [114.5, 2.25], [113.97, 2.47], [113.82, 2.82], [113.47, 2.97], [113.25, 3.5], [113.35, 3.75], [113.25, 4.0], [113.47, 4.53]]]]}, "2021-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, 4.53], [113.82, 4.68], [113.97, 5.03], [114.32, 5.18], [114.47, 5.53], [114.82, 5.68], [114.97, 6.03], [115.32, 6.18], [115.47, 6.53], [116.0, 6.75], [116.53, 6.53], [116.75, 6.0], [116.65, 5.75], [116.68, 5.68], [117.03, 5.53], [117.25, 5.0], [117.03, 4.47], [116.5, 4.25], [116.25, 4.35], [116.18, 4.32], [116.15, 4.25], [116.25, 4.0], [116.15, 3.75], [116.25, 3.5], [116.15, 3.25], [116.25, 3.0], [116.03, 2.47], [115.5, 2.25], [115.25, 2.35], [115.0, 2.25], [114.75, 2.35], [114.5, 2.25], [113.97, 2.47], [113.82, 2.82], [113.47, 2.97], [113.25, 3.5], [113.35, 3.75], [113.25, 4.0], [113.47, 4.53]]]]}, "2021-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, 4.53], [113.82, 4.68], [113.97, 5.03], [114.32, 5.18], [114.47, 5.53], [114.82, 5.68], [114.97, 6.03], [115.32, 6.18], [115.47, 6.53], [116.0, 6.75], [116.53, 6.53], [116.75, 6.0], [116.65, 5.75], [116.68, 5.68], [117.03, 5.53], [117.25, 5.0], [117.03, 4.47], [116.5, 4.25], [116.25, 4.35], [116.18, 4.32], [116.15, 4.25], [116.25, 4.0], [116.15, 3.75], [116.25, 3.5], [116.15, 3.25], [116.25, 3.0], [116.03, 2.47], [115.5, 2.25], [115.25, 2.35], [115.0, 2.25], [114.75, 2.35], [114.5, 2.25], [113.97, 2.47], [113.82, 2.82], [113.47, 2.97], [113.25, 3.5], [113.35, 3.75], [113.25, 4.0], [113.47, 4.53]]]]}, "2021-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, 4.53], [113.82, 4.68], [113.97, 5.03], [114.5, 5.25], [115.03, 5.03], [115.25, 4.5], [115.03, 3.97], [114.68, 3.82], [114.65, 3.75], [114.75, 3.5], [114.53, 2.97], [114.0, 2.75], [113.47, 2.97], [113.25, 3.5], [113.35, 3.75], [113.25, 4.0], [113.47, 4.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.4426647712330123}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6862003670241459}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.650816914583174, 22.07305886077438, 22.709109389104412, 24.76026948450243]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.99526144738678, 18.13434837885029, 18.845315932530923, 24.119019481194016]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5508369607498533, -2.11685372332377, -1.4726833114925144, -1.1137901055682466]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.941406699925892, -3.4426647712330123, -1.8175520514194545, -1.1572431390529232]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8283227697516322, -2.486209681067513, -1.7141767455223555, -1.2588033557983873]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1361510026445942, -3.567155328262048, -2.053688658998857, -1.2881805229576757]}}