{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:18:47.541863", "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": "2020-Feb-15_to_2020-Feb-18_101.5_26.0"}, "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": 2020020000517}, "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 15 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 18 2020"}, "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": 61802.720820578936}, "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": 26.0}, "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": 101.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "101.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 101.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 103.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.75, 26.5], [101.97, 27.03], [102.5, 27.25], [102.75, 27.15], [103.0, 27.25], [103.53, 27.03], [103.75, 26.5], [103.63, 26.2], [104.03, 26.03], [104.25, 25.5], [104.03, 24.97], [103.5, 24.75], [103.25, 24.85], [103.0, 24.75], [102.47, 24.97], [102.25, 25.5], [102.38, 25.8], [101.97, 25.97], [101.75, 26.5]]]]}, "2020-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.85, 25.75], [100.75, 26.0], [100.97, 26.53], [101.5, 26.75], [101.75, 26.65], [101.82, 26.68], [101.97, 27.03], [102.5, 27.25], [102.75, 27.15], [103.0, 27.25], [103.53, 27.03], [103.75, 26.5], [103.63, 26.2], [104.03, 26.03], [104.25, 25.5], [104.03, 24.97], [103.68, 24.82], [103.65, 24.75], [103.75, 24.5], [103.65, 24.25], [103.68, 24.18], [104.03, 24.03], [104.25, 23.5], [104.03, 22.97], [103.68, 22.82], [103.53, 22.47], [103.0, 22.25], [102.75, 22.35], [102.5, 22.25], [101.97, 22.47], [101.82, 22.82], [101.47, 22.97], [101.25, 23.5], [101.35, 23.75], [101.25, 24.0], [101.35, 24.25], [101.32, 24.32], [100.97, 24.47], [100.75, 25.0], [100.85, 25.25], [100.75, 25.5], [100.85, 25.75]]]]}, "2020-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.85, 25.75], [100.75, 26.0], [100.97, 26.53], [101.5, 26.75], [101.75, 26.65], [101.82, 26.68], [101.97, 27.03], [102.5, 27.25], [102.75, 27.15], [103.0, 27.25], [103.53, 27.03], [103.75, 26.5], [103.63, 26.2], [104.03, 26.03], [104.25, 25.5], [104.03, 24.97], [103.68, 24.82], [103.65, 24.75], [103.75, 24.5], [103.65, 24.25], [103.68, 24.18], [104.03, 24.03], [104.25, 23.5], [104.03, 22.97], [103.68, 22.82], [103.53, 22.47], [103.0, 22.25], [102.75, 22.35], [102.5, 22.25], [101.97, 22.47], [101.82, 22.82], [101.47, 22.97], [101.25, 23.5], [101.35, 23.75], [101.25, 24.0], [101.35, 24.25], [101.32, 24.32], [100.97, 24.47], [100.75, 25.0], [100.85, 25.25], [100.75, 25.5], [100.85, 25.75]]]]}, "2020-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.85, 25.75], [100.75, 26.0], [100.97, 26.53], [101.5, 26.75], [101.75, 26.65], [102.0, 26.75], [102.53, 26.53], [102.75, 26.0], [102.63, 25.7], [102.75, 25.65], [103.0, 25.75], [103.53, 25.53], [103.75, 25.0], [103.65, 24.75], [103.75, 24.5], [103.65, 24.25], [103.68, 24.18], [104.03, 24.03], [104.25, 23.5], [104.03, 22.97], [103.68, 22.82], [103.53, 22.47], [103.0, 22.25], [102.75, 22.35], [102.5, 22.25], [101.97, 22.47], [101.82, 22.82], [101.47, 22.97], [101.25, 23.5], [101.35, 23.75], [101.25, 24.0], [101.35, 24.25], [101.32, 24.32], [100.97, 24.47], [100.75, 25.0], [100.85, 25.25], [100.75, 25.5], [100.85, 25.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.677700144505195}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.020438119730079}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.228879788823008, 7.862205141577476, 8.461623986846064, 9.725065526388562]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.528478845655684, 3.3097679163971065, 3.332421334575372, 6.907375624923191]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.481932587427323, -5.478111757300021, -4.985723285495316, -4.40093414505436]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.444704166223119, -7.677700144505195, -7.550950962301215, -5.567421760497552]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6319049026932873, -2.0950336088636035, -1.8421120919352274, -1.716418502360258]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7782543296122404, -3.453657843195187, -2.339190185279099, -2.1240576007664367]}}