{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:18.876589", "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": "2022-Aug-21_to_2022-Aug-25_75.5_10.5"}, "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": 2022080000901}, "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 21 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 139353.89560997402}, "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"]}, "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": ["Arabian Sea", "Laccadive Sea"]}, "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": 10.5}, "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": 75.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "75.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 71.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 76.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[75.75, 11.5], [75.65, 11.25], [75.68, 11.18], [75.75, 11.15], [76.0, 11.25], [76.53, 11.03], [76.75, 10.5], [76.53, 9.97], 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describing the boundary of the event at each time step", "value": {"2022-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.47, 11.53], [72.0, 11.75], [72.25, 11.65], [72.5, 11.75], [72.75, 11.65], [72.82, 11.68], [72.85, 11.75], [72.75, 12.0], [72.97, 12.53], [73.5, 12.75], [74.03, 12.53], [74.18, 12.18], [74.25, 12.15], [74.5, 12.25], [75.03, 12.03], [75.25, 11.5], [75.15, 11.25], [75.18, 11.18], [75.25, 11.15], [75.5, 11.25], [76.03, 11.03], [76.25, 10.5], [76.15, 10.25], [76.25, 10.0], [76.03, 9.47], [75.5, 9.25], [75.25, 9.35], [75.0, 9.25], [74.5, 9.46], [74.0, 9.25], [73.75, 9.35], [73.5, 9.25], [73.25, 9.35], [73.0, 9.25], [72.75, 9.35], [72.5, 9.25], [71.97, 9.47], [71.82, 9.82], [71.75, 9.85], [71.5, 9.75], [70.97, 9.97], [70.75, 10.5], [70.97, 11.03], [71.32, 11.18], [71.47, 11.53]]]]}, "2022-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.35, 11.25], [71.25, 11.5], [71.35, 11.75], [71.25, 12.0], [71.47, 12.53], [71.82, 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[73.97, 12.03], [74.5, 12.25], [74.75, 12.15], [75.0, 12.25], [75.53, 12.03], [75.75, 11.5], [75.65, 11.25], [75.68, 11.18], [76.03, 11.03], [76.25, 10.5], [76.03, 9.97], [75.5, 9.75], [75.25, 9.85], [75.0, 9.75], [74.47, 9.97], [74.25, 10.5], [74.35, 10.75], [74.32, 10.82], [73.97, 10.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.1611907863600663}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8276123033405904}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.83025957219752, 25.66390807283676, 25.714486581586357, 25.662970062602653, 25.328626459421628]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.387847777287504, 25.07337540006631, 24.99398510786108, 24.88629480613156, 25.090322013439334]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7550847422554035, -0.8904584092575031, -0.835929858123561, -0.8131314614041116, -0.6224294819464717]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9326722290754788, -1.1611907863600663, -1.1449640402301497, -1.067694555865387, -0.7968887222119179]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4769346360132583, -1.7132105150842991, -1.558121900296041, -1.529996658342104, -1.263432177916113]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.754708652797918, -2.2252300240985368, -2.0140905678746845, -1.910412709471912, -1.5885551941694196]}}