{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:19.538952", "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": "2024-Apr-13_to_2024-Apr-15_72.0_33.0"}, "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": 2024040000289}, "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": "April 13 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 15 2024"}, "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": 75303.1123708896}, "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": ["Pakistan"]}, "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": 33.0}, "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": 72.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "72.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 70.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 73.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[69.47, 33.53], [70.0, 33.75], [70.5, 33.54], [70.82, 33.68], [70.85, 33.75], [70.75, 34.0], [70.97, 34.53], [71.5, 34.75], [71.75, 34.65], [71.82, 34.68], [71.97, 35.03], [72.5, 35.25], [72.75, 35.15], [73.0, 35.25], [73.53, 35.03], [73.75, 34.5], [73.54, 34.0], [73.75, 33.5], [73.65, 33.25], [73.75, 33.0], [73.65, 32.75], [73.75, 32.5], [73.65, 32.25], [73.75, 32.0], [73.53, 31.47], [73.0, 31.25], [72.75, 31.35], [72.5, 31.25], [72.25, 31.35], [72.18, 31.32], [72.03, 30.97], [71.5, 30.75], [71.25, 30.85], [71.0, 30.75], [70.75, 30.85], [70.5, 30.75], [69.97, 30.97], [69.75, 31.5], [69.96, 32.0], [69.82, 32.32], [69.47, 32.47], [69.25, 33.0], [69.47, 33.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.47, 32.47], [69.25, 33.0], [69.47, 33.53], [70.0, 33.75], [70.5, 33.54], [70.82, 33.68], [70.85, 33.75], [70.75, 34.0], [70.97, 34.53], [71.5, 34.75], [71.75, 34.65], [71.82, 34.68], [71.97, 35.03], [72.5, 35.25], [72.75, 35.15], [73.0, 35.25], [73.53, 35.03], [73.75, 34.5], [73.54, 34.0], [73.75, 33.5], [73.65, 33.25], [73.75, 33.0], [73.65, 32.75], [73.75, 32.5], [73.65, 32.25], [73.75, 32.0], [73.53, 31.47], [73.0, 31.25], [72.75, 31.35], [72.5, 31.25], [72.25, 31.35], [72.18, 31.32], [72.03, 30.97], [71.5, 30.75], [71.25, 30.85], [71.0, 30.75], [70.75, 30.85], [70.5, 30.75], [69.97, 30.97], [69.75, 31.5], [69.96, 32.0], [69.82, 32.32], [69.47, 32.47]]]]}, "2024-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.47, 32.47], [69.25, 33.0], [69.47, 33.53], [70.0, 33.75], [70.5, 33.54], [70.82, 33.68], [70.85, 33.75], [70.75, 34.0], [70.97, 34.53], [71.5, 34.75], [71.75, 34.65], [71.82, 34.68], [71.97, 35.03], [72.5, 35.25], [72.75, 35.15], [73.0, 35.25], [73.53, 35.03], [73.75, 34.5], [73.54, 34.0], [73.75, 33.5], [73.65, 33.25], [73.75, 33.0], [73.65, 32.75], [73.75, 32.5], [73.65, 32.25], [73.75, 32.0], [73.53, 31.47], [73.0, 31.25], [72.75, 31.35], [72.5, 31.25], [72.25, 31.35], [72.18, 31.32], [72.03, 30.97], [71.5, 30.75], [71.25, 30.85], [71.0, 30.75], [70.75, 30.85], [70.5, 30.75], [69.97, 30.97], [69.75, 31.5], [69.96, 32.0], [69.82, 32.32], [69.47, 32.47]]]]}, "2024-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.47, 32.47], [69.25, 33.0], [69.47, 33.53], [70.0, 33.75], [70.5, 33.54], [70.82, 33.68], [70.85, 33.75], [70.75, 34.0], [70.97, 34.53], [71.5, 34.75], [71.75, 34.65], [71.82, 34.68], [71.97, 35.03], [72.5, 35.25], [72.75, 35.15], [73.0, 35.25], [73.53, 35.03], [73.75, 34.5], [73.54, 34.0], [73.75, 33.5], [73.65, 33.25], [73.75, 33.0], [73.65, 32.75], [73.75, 32.5], [73.65, 32.25], [73.75, 32.0], [73.53, 31.47], [73.0, 31.25], [72.75, 31.35], [72.5, 31.25], [72.25, 31.35], [72.18, 31.32], [72.03, 30.97], [71.5, 30.75], [71.25, 30.85], [71.0, 30.75], [70.75, 30.85], [70.5, 30.75], [69.97, 30.97], [69.75, 31.5], [69.96, 32.0], [69.82, 32.32], [69.47, 32.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.601913004885716}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.604287891827287}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.36975821252514, 19.112611362965538, 18.894486554901277]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.214493209468401, 13.152491288680494, 12.162437658138458]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.839057523398219, -5.285518192014277, -5.688287960069364]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.022032123205236, -6.162224372292485, -7.601913004885716]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6952936283187277, -1.499143312379797, -1.5783287834692763]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9072277563848, -1.796744857075244, -1.9728562568193908]}}