{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:29.820887", "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-Jul-01_to_2022-Jul-04_71.5_27.5"}, "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": 2022070000130}, "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": "July 01 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 04 2022"}, "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": 93260.61667756917}, "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", "Pakistan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 27.5}, "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": 71.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "71.5\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": 75.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[70.97, 28.03], [71.32, 28.18], [71.35, 28.25], [71.25, 28.5], [71.35, 28.75], [71.25, 29.0], [71.47, 29.53], [72.0, 29.75], [72.25, 29.65], [72.5, 29.75], [72.75, 29.65], [73.0, 29.75], [73.53, 29.53], [73.68, 29.18], [74.03, 29.03], [74.18, 28.68], [74.53, 28.53], [74.68, 28.18], [74.75, 28.15], [75.0, 28.25], [75.53, 28.03], [75.75, 27.5], [75.65, 27.25], [75.75, 27.0], [75.65, 26.75], [75.75, 26.5], [75.65, 26.25], [75.75, 26.0], [75.53, 25.47], [75.0, 25.25], [74.75, 25.35], [74.5, 25.25], [74.25, 25.35], [74.0, 25.25], [73.75, 25.35], [73.5, 25.25], [72.97, 25.47], [72.75, 26.0], [72.85, 26.25], [72.75, 26.5], [72.85, 26.75], [72.82, 26.82], [72.75, 26.85], [72.68, 26.82], [72.53, 26.47], [72.0, 26.25], [71.75, 26.35], [71.5, 26.25], [70.97, 26.47], [70.75, 27.0], [70.85, 27.25], [70.75, 27.5], [70.97, 28.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.75, 27.5], [70.97, 28.03], [71.32, 28.18], [71.35, 28.25], [71.25, 28.5], [71.35, 28.75], [71.25, 29.0], [71.47, 29.53], [72.0, 29.75], [72.25, 29.65], [72.5, 29.75], [72.75, 29.65], [73.0, 29.75], [73.53, 29.53], [73.68, 29.18], [74.03, 29.03], [74.18, 28.68], [74.53, 28.53], [74.68, 28.18], [74.75, 28.15], [75.0, 28.25], [75.53, 28.03], [75.75, 27.5], [75.65, 27.25], [75.75, 27.0], [75.65, 26.75], [75.75, 26.5], [75.65, 26.25], [75.75, 26.0], [75.53, 25.47], [75.0, 25.25], [74.75, 25.35], [74.5, 25.25], [74.25, 25.35], [74.0, 25.25], [73.75, 25.35], [73.5, 25.25], [72.97, 25.47], [72.75, 26.0], [72.85, 26.25], [72.75, 26.5], [72.85, 26.75], [72.82, 26.82], [72.75, 26.85], [72.68, 26.82], [72.53, 26.47], [72.0, 26.25], [71.75, 26.35], [71.5, 26.25], [70.97, 26.47], [70.75, 27.0], [70.85, 27.25], [70.75, 27.5]]]]}, "2022-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.75, 27.5], [70.97, 28.03], [71.32, 28.18], [71.35, 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over entire duration", "value": -6.389037672743598}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.042566695246323}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.371267479961887, 29.615138926662837, 29.316057720538197, 32.124275388536205]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.178151238866917, 26.66657911097542, 26.922275953956614, 32.124275388536205]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.1771133913294936, -3.860258314666846, -4.131988299522434, -2.6261294227329586]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.389037672743598, -4.604639114000065, -4.956857132996959, -2.6261294227329586]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8380729869811245, -1.7196611743893653, -1.8841371308396007, -1.3056582665694574]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.411802197810795, -2.3053275763679815, -2.231620955281326, -1.3056582665694574]}}