{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:28.343956", "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-Mar-05_to_2015-Mar-07_108.5_24.0"}, "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": 2015030000334}, "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": "March 05 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 07 2015"}, "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": 59318.92865604302}, "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": 24.0}, "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": 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": 106.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 109.75}, "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": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.47, 25.03], [107.0, 25.25], [107.25, 25.15], [107.32, 25.18], [107.47, 25.53], [108.0, 25.75], [108.25, 25.65], [108.5, 25.75], [109.03, 25.53], [109.18, 25.18], [109.25, 25.15], [109.5, 25.25], [110.03, 25.03], [110.25, 24.5], [110.15, 24.25], [110.25, 24.0], [110.03, 23.47], [109.68, 23.32], [109.65, 23.25], [109.75, 23.0], [109.53, 22.47], [109.0, 22.25], [108.75, 22.35], [108.5, 22.25], [108.25, 22.35], [108.0, 22.25], [107.75, 22.35], [107.5, 22.25], [106.97, 22.47], [106.75, 23.0], [106.85, 23.25], [106.82, 23.32], [106.47, 23.47], [106.25, 24.0], [106.35, 24.25], [106.25, 24.5], [106.47, 25.03]]]]}, "2015-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.47, 25.03], [107.0, 25.25], [107.25, 25.15], [107.32, 25.18], [107.47, 25.53], [108.0, 25.75], [108.25, 25.65], [108.5, 25.75], [109.03, 25.53], [109.18, 25.18], [109.25, 25.15], [109.5, 25.25], [110.03, 25.03], [110.25, 24.5], [110.15, 24.25], [110.25, 24.0], [110.03, 23.47], [109.68, 23.32], [109.65, 23.25], [109.75, 23.0], [109.53, 22.47], [109.0, 22.25], [108.75, 22.35], [108.5, 22.25], [108.25, 22.35], [108.0, 22.25], [107.75, 22.35], [107.5, 22.25], [106.97, 22.47], [106.75, 23.0], [106.85, 23.25], [106.82, 23.32], [106.47, 23.47], [106.25, 24.0], [106.35, 24.25], [106.25, 24.5], [106.47, 25.03]]]]}, "2015-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.47, 25.03], [107.0, 25.25], [107.25, 25.15], [107.32, 25.18], [107.47, 25.53], [108.0, 25.75], [108.25, 25.65], [108.5, 25.75], [109.03, 25.53], [109.18, 25.18], [109.25, 25.15], [109.5, 25.25], [110.03, 25.03], [110.25, 24.5], [110.15, 24.25], [110.25, 24.0], [110.03, 23.47], [109.68, 23.32], [109.65, 23.25], [109.75, 23.0], [109.53, 22.47], [109.0, 22.25], [108.75, 22.35], [108.5, 22.25], [108.25, 22.35], [108.0, 22.25], [107.75, 22.35], [107.5, 22.25], [106.97, 22.47], [106.75, 23.0], [106.85, 23.25], [106.82, 23.32], [106.47, 23.47], [106.25, 24.0], [106.35, 24.25], [106.25, 24.5], [106.47, 25.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.991897290945303}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.8325078247492375}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.5705699688844, 9.06463283797433, 9.778942149728152]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.002672033679744, 7.334052312690119, 7.748892986076555]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.698651717904552, -6.27536628129949, -5.52350547504367]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.50544762024299, -6.991897290945303, -6.011693211441582]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.399154603722766, -1.5734119255066281, -1.392077869344244]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5387456438864295, -1.6917482706936557, -1.5800406730302776]}}