{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:01.113563", "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-Sep-28_to_2021-Oct-03_156.5_53.0"}, "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": 2021090002964}, "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": "September 28 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 52581.880064267796}, "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": ["Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Pacific Ocean", "Sea of Okhotsk"]}, "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": 53.0}, "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": 156.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "156.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 155.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 157.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[155.25, 53.5], [155.35, 53.75], [155.25, 54.0], [155.35, 54.25], [155.32, 54.32], [154.97, 54.47], [154.75, 55.0], [154.97, 55.53], [155.32, 55.68], [155.35, 55.75], [155.25, 56.0], [155.47, 56.53], [156.0, 56.75], [156.25, 56.65], [156.32, 56.68], [156.47, 57.03], [157.0, 57.25], [157.25, 57.15], [157.5, 57.25], [158.03, 57.03], [158.25, 56.5], [158.15, 56.25], [158.25, 56.0], [158.03, 55.47], [157.5, 55.25], [158.03, 55.03], [158.25, 54.5], [158.03, 53.97], [157.5, 53.75], [157.26, 53.85], [157.25, 53.85], [157.18, 53.82], [157.15, 53.75], [157.18, 53.68], [157.53, 53.53], [157.75, 53.0], [157.65, 52.75], [157.75, 52.5], [157.65, 52.25], [157.75, 52.0], [157.54, 51.5], [157.75, 51.0], [157.53, 50.47], [157.0, 50.25], [156.47, 50.47], [156.32, 50.82], [156.25, 50.85], [156.0, 50.75], [155.47, 50.97], [155.25, 51.5], [155.47, 52.03], [155.82, 52.18], [155.85, 52.25], [155.82, 52.32], [155.47, 52.47], [155.25, 53.0], [155.35, 53.25], [155.25, 53.5]], [[157.25, 55.35], [157.18, 55.32], [157.15, 55.25], [157.18, 55.18], [157.25, 55.15], [157.26, 55.15], [157.5, 55.25], [157.25, 55.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.75, 54.5], [155.97, 55.03], [156.5, 55.25], [157.0, 55.04], [157.5, 55.25], [158.03, 55.03], [158.25, 54.5], [158.03, 53.97], [157.5, 53.75], [157.2, 53.88], [157.04, 53.5], [157.25, 53.0], [157.03, 52.47], [156.5, 52.25], [155.97, 52.47], [155.75, 53.0], [155.96, 53.5], [155.75, 54.0], [155.85, 54.25], [155.75, 54.5]]]]}, "2021-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.47, 52.47], [155.25, 53.0], [155.47, 53.53], [155.82, 53.68], [155.85, 53.75], [155.75, 54.0], [155.85, 54.25], [155.75, 54.5], [155.85, 54.75], [155.75, 55.0], [155.97, 55.53], [156.5, 55.75], [157.03, 55.53], [157.18, 55.18], [157.25, 55.15], [157.5, 55.25], [158.03, 55.03], [158.25, 54.5], [158.03, 53.97], [157.5, 53.75], [157.25, 53.85], [157.18, 53.82], [157.15, 53.75], [157.18, 53.68], [157.53, 53.53], [157.75, 53.0], [157.65, 52.75], [157.75, 52.5], [157.65, 52.25], [157.75, 52.0], [157.54, 51.5], [157.75, 51.0], [157.53, 50.47], [157.0, 50.25], [156.47, 50.47], [156.32, 50.82], [155.97, 50.97], [155.75, 51.5], [155.96, 52.0], [155.82, 52.32], [155.47, 52.47]]]]}, "2021-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[154.97, 54.47], [154.75, 55.0], [154.97, 55.53], [155.32, 55.68], [155.35, 55.75], [155.25, 56.0], [155.47, 56.53], [156.0, 56.75], [156.25, 56.65], [156.5, 56.75], [156.75, 56.65], [157.0, 56.75], [157.25, 56.65], [157.5, 56.75], [158.03, 56.53], [158.25, 56.0], [158.03, 55.47], [157.5, 55.25], [158.03, 55.03], [158.25, 54.5], [158.03, 53.97], [157.5, 53.75], [157.25, 53.85], [157.18, 53.82], [157.15, 53.75], [157.18, 53.68], [157.53, 53.53], [157.75, 53.0], [157.65, 52.75], [157.75, 52.5], [157.65, 52.25], [157.75, 52.0], [157.54, 51.5], [157.75, 51.0], [157.53, 50.47], [157.0, 50.25], [156.47, 50.47], [156.32, 50.82], [156.25, 50.85], [156.0, 50.75], [155.47, 50.97], [155.25, 51.5], [155.47, 52.03], [155.82, 52.18], [155.85, 52.25], [155.82, 52.32], [155.47, 52.47], [155.25, 53.0], [155.35, 53.25], [155.25, 53.5], [155.35, 53.75], [155.25, 54.0], [155.35, 54.25], [155.32, 54.32], [154.97, 54.47]], [[157.25, 55.35], [157.18, 55.32], [157.15, 55.25], [157.18, 55.18], [157.25, 55.15], [157.5, 55.25], [157.25, 55.35]]]]}, "2021-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[154.97, 54.47], [154.75, 55.0], [154.97, 55.53], [155.32, 55.68], [155.35, 55.75], [155.25, 56.0], [155.47, 56.53], [156.0, 56.75], [156.25, 56.65], [156.32, 56.68], [156.47, 57.03], [157.0, 57.25], [157.25, 57.15], [157.5, 57.25], [158.03, 57.03], [158.25, 56.5], [158.15, 56.25], [158.25, 56.0], [158.03, 55.47], [157.5, 55.25], [157.25, 55.35], [157.18, 55.32], [157.15, 55.25], [157.18, 55.18], [157.53, 55.03], [157.75, 54.5], [157.53, 53.97], [157.18, 53.82], [157.15, 53.75], [157.18, 53.68], [157.53, 53.53], [157.75, 53.0], [157.65, 52.75], [157.75, 52.5], [157.65, 52.25], [157.75, 52.0], [157.54, 51.5], [157.75, 51.0], [157.53, 50.47], [157.0, 50.25], [156.47, 50.47], [156.32, 50.82], [156.25, 50.85], [156.0, 50.75], [155.47, 50.97], [155.25, 51.5], [155.47, 52.03], [155.82, 52.18], [155.85, 52.25], [155.82, 52.32], [155.47, 52.47], [155.25, 53.0], [155.35, 53.25], [155.25, 53.5], [155.35, 53.75], [155.25, 54.0], [155.35, 54.25], [155.32, 54.32], [154.97, 54.47]]]]}, "2021-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[154.97, 54.47], [154.75, 55.0], [154.97, 55.53], [155.32, 55.68], [155.35, 55.75], [155.25, 56.0], [155.47, 56.53], [156.0, 56.75], [156.25, 56.65], [156.32, 56.68], [156.47, 57.03], [157.0, 57.25], [157.25, 57.15], [157.5, 57.25], [158.03, 57.03], [158.25, 56.5], [158.15, 56.25], [158.25, 56.0], [158.03, 55.47], [157.5, 55.25], [157.25, 55.35], [157.18, 55.32], [157.15, 55.25], [157.18, 55.18], [157.53, 55.03], [157.75, 54.5], [157.53, 53.97], [157.18, 53.82], [157.15, 53.75], [157.18, 53.68], [157.53, 53.53], [157.75, 53.0], [157.65, 52.75], [157.75, 52.5], [157.65, 52.25], [157.75, 52.0], [157.54, 51.5], [157.75, 51.0], [157.53, 50.47], [157.0, 50.25], [156.47, 50.47], [156.32, 50.82], [156.25, 50.85], [156.0, 50.75], [155.47, 50.97], [155.25, 51.5], [155.47, 52.03], [155.82, 52.18], [155.85, 52.25], [155.82, 52.32], [155.47, 52.47], [155.25, 53.0], [155.35, 53.25], [155.25, 53.5], [155.35, 53.75], [155.25, 54.0], [155.35, 54.25], [155.32, 54.32], [154.97, 54.47]]]]}, "2021-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.35, 55.75], [155.25, 56.0], [155.47, 56.53], [156.0, 56.75], [156.25, 56.65], [156.32, 56.68], [156.47, 57.03], [157.0, 57.25], [157.25, 57.15], [157.5, 57.25], [158.03, 57.03], [158.25, 56.5], [158.03, 55.97], [157.68, 55.82], [157.53, 55.47], [157.18, 55.32], [157.03, 54.97], [156.68, 54.82], [156.53, 54.47], [156.0, 54.25], [155.75, 54.35], [155.5, 54.25], [154.97, 54.47], [154.75, 55.0], [154.97, 55.53], [155.32, 55.68], [155.35, 55.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.790409671282248}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.8834301150189194}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.568966042112834, 9.486800627745879, 9.948023445239642, 9.811868714093691, 9.576357156630081, 8.780121904724183]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.744403536856169, 11.488936622235485, 11.332118754819533, 11.365797793965555, 11.114537391621695, 9.410261061360359]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.794604358019413, 2.780894526385132, 3.036090522367355, 2.89820230507951, 2.8467212844252674, 2.6926741378399206]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.3404942260625035, 3.829187175961067, 4.790409671282248, 3.8754468388228247, 4.004230793961483, 3.078361273275675]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3678767706195853, 1.6010551272885414, 1.765063462893833, 1.7445072940904962, 1.7249163702907195, 1.4830473130014294]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.441276692087104, 1.9740843478955974, 2.36653865532704, 2.223367858839244, 2.1520782577423145, 1.6623948593322417]}}