{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:36.179480", "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": "2012-Oct-20_to_2012-Oct-23_84.5_38.5"}, "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": 2012100000814}, "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": "October 20 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 23 2012"}, "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": 93111.32360989363}, "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.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": 38.5}, "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": 84.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "84.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 82.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 87.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.25, 41.5], [82.47, 42.03], [83.0, 42.25], [83.53, 42.03], 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"MultiPolygon", "coordinates": [[[[82.25, 41.5], [82.47, 42.03], [83.0, 42.25], [83.53, 42.03], [83.68, 41.68], [84.03, 41.53], [84.25, 41.0], [84.15, 40.75], [84.18, 40.68], [84.25, 40.65], [84.5, 40.75], [84.75, 40.65], [85.0, 40.75], [85.25, 40.65], [85.5, 40.75], [85.75, 40.65], [85.82, 40.68], [85.97, 41.03], [86.5, 41.25], [86.8, 41.13], [86.97, 41.53], [87.5, 41.75], [88.03, 41.53], [88.25, 41.0], [88.15, 40.75], [88.25, 40.5], [88.15, 40.25], [88.25, 40.0], [88.15, 39.75], [88.25, 39.5], [88.03, 38.97], [87.5, 38.75], [87.25, 38.85], [87.13, 38.8], [87.25, 38.5], [87.03, 37.97], [86.5, 37.75], [86.25, 37.85], [86.18, 37.82], [86.03, 37.47], [85.5, 37.25], [85.25, 37.35], [85.0, 37.25], [84.75, 37.35], [84.5, 37.25], [84.25, 37.35], [84.0, 37.25], [83.75, 37.35], [83.5, 37.25], [82.97, 37.47], [82.75, 38.0], [82.85, 38.25], [82.75, 38.5], [82.97, 39.03], [83.32, 39.18], [83.35, 39.25], [83.32, 39.32], [83.25, 39.35], [83.0, 39.25], [82.75, 39.35], [82.5, 39.25], [81.97, 39.47], [81.75, 40.0], [81.97, 40.53], [82.32, 40.68], [82.46, 41.0], [82.25, 41.5]]]]}, "2012-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.25, 41.5], [82.47, 42.03], [83.0, 42.25], [83.53, 42.03], [83.68, 41.68], [84.03, 41.53], [84.25, 41.0], [84.15, 40.75], [84.18, 40.68], [84.25, 40.65], [84.5, 40.75], [84.75, 40.65], [85.0, 40.75], [85.25, 40.65], [85.5, 40.75], [85.75, 40.65], [85.82, 40.68], [85.97, 41.03], [86.5, 41.25], [86.8, 41.13], [86.97, 41.53], [87.5, 41.75], [88.03, 41.53], [88.25, 41.0], [88.15, 40.75], [88.25, 40.5], [88.15, 40.25], [88.25, 40.0], [88.15, 39.75], [88.25, 39.5], [88.03, 38.97], [87.5, 38.75], [87.25, 38.85], [87.13, 38.8], [87.25, 38.5], [87.03, 37.97], [86.5, 37.75], [86.25, 37.85], [86.18, 37.82], [86.03, 37.47], [85.5, 37.25], [85.25, 37.35], [85.0, 37.25], [84.75, 37.35], [84.5, 37.25], [84.25, 37.35], [84.0, 37.25], [83.75, 37.35], [83.5, 37.25], [82.97, 37.47], [82.75, 38.0], [82.85, 38.25], [82.75, 38.5], [82.97, 39.03], 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"value": [6.528051895695739, 5.313402459413396, 5.673154510466873, 5.478655597165982]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.346992519444711, 4.119613298152501, 4.3036398841449, 5.210414279701865]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.880336051401256, -4.664703148250224, -3.9057460583506383, -3.6354183898981014]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.731092081179611, -5.46586749397153, -4.937528034962668, -3.858585155165258]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5994333068717597, -1.9218695717877439, -1.6174263097762798, -1.4164405064470327]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8934805583444336, -2.306342376370765, -1.9889856871744227, -1.518386437091226]}}