{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:20.441001", "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-May-10_to_2012-May-13_76.5_16.0"}, "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": 2012050000635}, "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": "May 10 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 13 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": 53353.32243482287}, "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": ["India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": 16.0}, "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": 76.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "76.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 74.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 76.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.32, 17.18], [75.35, 17.25], [75.32, 17.32], [74.97, 17.47], [74.75, 18.0], [74.85, 18.25], [74.75, 18.5], [74.97, 19.03], [75.5, 19.25], [76.03, 19.03], [76.18, 18.68], [76.53, 18.53], [76.75, 18.0], [76.65, 17.75], [76.75, 17.5], [76.65, 17.25], [76.75, 17.0], [76.65, 16.75], [76.68, 16.68], [77.03, 16.53], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.68, 14.82], [76.65, 14.75], [76.75, 14.5], [76.53, 13.97], [76.0, 13.75], [75.47, 13.97], [75.25, 14.5], [75.35, 14.75], [75.25, 15.0], [75.35, 15.25], [75.32, 15.32], [75.25, 15.35], [75.0, 15.25], [74.47, 15.47], [74.25, 16.0], [74.47, 16.53], [74.82, 16.68], [74.97, 17.03], [75.32, 17.18]]]]}, "2012-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.32, 17.18], [75.35, 17.25], [75.32, 17.32], [74.97, 17.47], [74.75, 18.0], [74.85, 18.25], [74.75, 18.5], [74.97, 19.03], [75.5, 19.25], [76.03, 19.03], [76.18, 18.68], [76.53, 18.53], [76.68, 18.18], [77.03, 18.03], [77.25, 17.5], [77.15, 17.25], [77.25, 17.0], [77.04, 16.5], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.68, 14.82], [76.65, 14.75], [76.75, 14.5], [76.53, 13.97], [76.0, 13.75], [75.47, 13.97], [75.32, 14.32], [74.97, 14.47], [74.75, 15.0], [74.88, 15.3], [74.47, 15.47], [74.25, 16.0], [74.47, 16.53], [74.82, 16.68], [74.97, 17.03], [75.32, 17.18]]]]}, "2012-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.32, 17.18], [75.35, 17.25], [75.32, 17.32], [74.97, 17.47], [74.75, 18.0], [74.85, 18.25], [74.75, 18.5], [74.97, 19.03], [75.5, 19.25], [76.03, 19.03], [76.18, 18.68], [76.53, 18.53], [76.68, 18.18], [77.03, 18.03], [77.25, 17.5], [77.15, 17.25], [77.25, 17.0], [77.04, 16.5], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.68, 14.82], [76.65, 14.75], [76.75, 14.5], [76.53, 13.97], [76.0, 13.75], [75.47, 13.97], [75.32, 14.32], [74.97, 14.47], [74.75, 15.0], [74.88, 15.3], [74.47, 15.47], [74.25, 16.0], [74.47, 16.53], [74.82, 16.68], [74.97, 17.03], [75.32, 17.18]]]]}, "2012-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.32, 17.18], [75.35, 17.25], [75.25, 17.5], [75.47, 18.03], [76.0, 18.25], [76.25, 18.15], [76.5, 18.25], [77.03, 18.03], [77.25, 17.5], [77.15, 17.25], [77.25, 17.0], [77.04, 16.5], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.68, 14.82], [76.65, 14.75], [76.75, 14.5], [76.53, 13.97], [76.0, 13.75], [75.47, 13.97], [75.32, 14.32], [74.97, 14.47], [74.75, 15.0], [74.88, 15.3], [74.47, 15.47], [74.25, 16.0], [74.47, 16.53], [74.82, 16.68], [74.97, 17.03], [75.32, 17.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.734343479344261}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9294684719650874}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.849247178665678, 29.26124046918403, 28.39932119379222, 28.252010721169825]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.818198783084938, 27.049843102368243, 25.810819083898934, 26.3103322675409]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8075254939081824, -2.4696799426469784, -3.3304115053792254, -3.1220260451067587]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.946024076846925, -3.361979661398834, -4.734343479344261, -4.267294152516683]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.70773317231423, -1.5452742294921835, -2.1809021742630703, -2.0243897710044987]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1418100232252395, -1.775999760838785, -2.610832900156547, -2.4611698900907784]}}