{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:22.887518", "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": "2021-Oct-27_to_2021-Oct-29_56.5_37.0"}, "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": 2021100000928}, "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": "October 27 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 29 2021"}, "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": 61595.237123160034}, "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": ["Iran, Islamic Republic of", "Turkmenistan"]}, "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": 37.0}, "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": 56.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "56.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 54.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 58.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[53.82, 38.68], [53.97, 39.03], [54.5, 39.25], [54.75, 39.15], [55.0, 39.25], [55.53, 39.03], [55.68, 38.68], [56.03, 38.53], [56.25, 38.0], [56.15, 37.75], [56.18, 37.68], [56.25, 37.65], [56.32, 37.68], [56.47, 38.03], [57.0, 38.25], [57.25, 38.15], [57.5, 38.25], [57.75, 38.15], [58.0, 38.25], [58.53, 38.03], [58.75, 37.5], [58.54, 37.0], [58.75, 36.5], [58.53, 35.97], [58.0, 35.75], [57.7, 35.88], [57.53, 35.47], [57.0, 35.25], [56.75, 35.35], [56.68, 35.32], [56.53, 34.97], [56.18, 34.82], [56.03, 34.47], [55.5, 34.25], [54.97, 34.47], [54.75, 35.0], [54.97, 35.53], [55.32, 35.68], [55.46, 36.0], [55.25, 36.5], [55.35, 36.75], [55.32, 36.82], [55.25, 36.85], [55.18, 36.82], [55.03, 36.47], [54.5, 36.25], [53.97, 36.47], [53.82, 36.82], [53.47, 36.97], [53.25, 37.5], [53.35, 37.75], [53.25, 38.0], [53.47, 38.53], [53.82, 38.68]]]]}}, "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": {"2021-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.25, 38.0], [53.47, 38.53], [53.82, 38.68], [53.97, 39.03], [54.5, 39.25], [54.75, 39.15], [55.0, 39.25], [55.53, 39.03], [55.68, 38.68], [56.03, 38.53], [56.25, 38.0], [56.15, 37.75], [56.18, 37.68], [56.25, 37.65], [56.32, 37.68], [56.47, 38.03], [57.0, 38.25], [57.25, 38.15], [57.5, 38.25], [57.75, 38.15], [58.0, 38.25], [58.53, 38.03], [58.75, 37.5], [58.54, 37.0], [58.75, 36.5], [58.53, 35.97], [58.0, 35.75], [57.7, 35.88], [57.53, 35.47], [57.0, 35.25], [56.75, 35.35], [56.68, 35.32], [56.53, 34.97], [56.18, 34.82], [56.03, 34.47], [55.5, 34.25], [54.97, 34.47], [54.75, 35.0], [54.97, 35.53], [55.32, 35.68], [55.46, 36.0], [55.25, 36.5], [55.35, 36.75], [55.32, 36.82], [55.25, 36.85], [55.18, 36.82], [55.03, 36.47], [54.5, 36.25], [53.97, 36.47], [53.82, 36.82], [53.47, 36.97], [53.25, 37.5], [53.35, 37.75], [53.25, 38.0]]]]}, "2021-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.25, 38.0], [53.47, 38.53], [53.82, 38.68], [53.97, 39.03], [54.5, 39.25], [54.75, 39.15], [55.0, 39.25], [55.53, 39.03], [55.68, 38.68], [56.03, 38.53], [56.25, 38.0], [56.15, 37.75], [56.18, 37.68], [56.25, 37.65], [56.32, 37.68], [56.47, 38.03], [57.0, 38.25], [57.25, 38.15], [57.5, 38.25], [57.75, 38.15], [58.0, 38.25], [58.53, 38.03], [58.75, 37.5], [58.54, 37.0], [58.75, 36.5], [58.53, 35.97], [58.0, 35.75], [57.7, 35.88], [57.53, 35.47], [57.0, 35.25], [56.75, 35.35], [56.68, 35.32], [56.53, 34.97], [56.18, 34.82], [56.03, 34.47], [55.5, 34.25], [54.97, 34.47], [54.75, 35.0], [54.97, 35.53], [55.32, 35.68], [55.46, 36.0], [55.25, 36.5], [55.35, 36.75], [55.32, 36.82], [55.25, 36.85], [55.18, 36.82], [55.03, 36.47], [54.5, 36.25], [53.97, 36.47], [53.82, 36.82], [53.47, 36.97], [53.25, 37.5], [53.35, 37.75], [53.25, 38.0]]]]}, "2021-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.25, 38.0], [53.47, 38.53], [53.82, 38.68], [53.97, 39.03], [54.5, 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anomaly over entire duration", "value": -6.184994596750816}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.522852844172633, 8.88407732798646, 10.399366658650877]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.9185511459294275, 4.064705419050256, 5.727092458845789]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.353129599847998, -6.943955870195269, -5.257898320209183]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.698527986460249, -7.8154175623618585, -7.088757845141743]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9864536967286939, -2.12917709126867, -1.593209709946602]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5926312191163503, -2.5352518693934107, -1.9653861822576437]}}