{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:07.237244", "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-Aug-04_to_2012-Aug-06_93.5_40.0"}, "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": 2012080000306}, "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": "August 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 06 2012"}, "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": 64257.471745446}, "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": 40.0}, "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": 93.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "93.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 91.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 95.75}, "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": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 40.03], [91.32, 40.18], [91.47, 40.53], [91.82, 40.68], [91.97, 41.03], [92.5, 41.25], [92.75, 41.15], [93.0, 41.25], [93.25, 41.15], [93.5, 41.25], [93.75, 41.15], [94.0, 41.25], [94.53, 41.03], [94.68, 40.68], [94.75, 40.65], [94.82, 40.68], [94.97, 41.03], [95.5, 41.25], [96.03, 41.03], [96.25, 40.5], [96.15, 40.25], [96.25, 40.0], [96.03, 39.47], [95.68, 39.32], [95.53, 38.97], [95.0, 38.75], [94.75, 38.85], [94.5, 38.75], [94.25, 38.85], [94.0, 38.75], [93.75, 38.85], [93.5, 38.75], [93.25, 38.85], [93.18, 38.82], [93.15, 38.75], [93.25, 38.5], [93.15, 38.25], [93.25, 38.0], [93.03, 37.47], [92.5, 37.25], [91.97, 37.47], [91.82, 37.82], [91.47, 37.97], [91.32, 38.32], [90.97, 38.47], [90.75, 39.0], [90.85, 39.25], [90.75, 39.5], [90.97, 40.03]]]]}, "2012-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 40.03], [91.32, 40.18], [91.47, 40.53], [91.82, 40.68], [91.97, 41.03], [92.5, 41.25], [92.75, 41.15], [93.0, 41.25], [93.25, 41.15], [93.5, 41.25], [93.75, 41.15], [94.0, 41.25], [94.53, 41.03], [94.68, 40.68], [94.75, 40.65], [94.82, 40.68], [94.97, 41.03], [95.5, 41.25], [96.03, 41.03], [96.25, 40.5], [96.15, 40.25], [96.25, 40.0], [96.03, 39.47], [95.68, 39.32], [95.53, 38.97], [95.0, 38.75], [94.75, 38.85], [94.5, 38.75], [94.25, 38.85], [94.0, 38.75], [93.75, 38.85], [93.5, 38.75], [93.25, 38.85], [93.18, 38.82], [93.15, 38.75], [93.25, 38.5], [93.15, 38.25], [93.25, 38.0], [93.03, 37.47], [92.5, 37.25], [91.97, 37.47], [91.82, 37.82], [91.47, 37.97], [91.32, 38.32], [90.97, 38.47], [90.75, 39.0], [90.85, 39.25], [90.75, 39.5], [90.97, 40.03]]]]}, "2012-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 40.03], [91.32, 40.18], [91.47, 40.53], [91.82, 40.68], [91.97, 41.03], [92.5, 41.25], [92.75, 41.15], [93.0, 41.25], [93.25, 41.15], [93.5, 41.25], [93.75, 41.15], [94.0, 41.25], [94.53, 41.03], [94.68, 40.68], [94.75, 40.65], [94.82, 40.68], [94.97, 41.03], [95.5, 41.25], [96.03, 41.03], [96.25, 40.5], [96.15, 40.25], [96.25, 40.0], [96.03, 39.47], [95.68, 39.32], [95.53, 38.97], [95.0, 38.75], [94.75, 38.85], [94.5, 38.75], [94.25, 38.85], [94.0, 38.75], [93.75, 38.85], [93.5, 38.75], [93.25, 38.85], [93.18, 38.82], [93.15, 38.75], [93.25, 38.5], [93.15, 38.25], [93.25, 38.0], [93.03, 37.47], [92.5, 37.25], [91.97, 37.47], [91.82, 37.82], [91.47, 37.97], [91.32, 38.32], [90.97, 38.47], [90.75, 39.0], [90.85, 39.25], [90.75, 39.5], [90.97, 40.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.934604304615846}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.8416764513918755}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.96826636439698, 14.780223441452165, 17.823826070006305]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.010446972487273, 6.968156988393218, 9.860163734924242]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.798804843295716, -7.939613191815185, -4.786611319064725]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.370248667468957, -9.934604304615846, -7.359547922585421]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7943552269251641, -3.0154543730494234, -1.7819886559274782]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1367773947808297, -3.4154067143742495, -2.4547890891809434]}}