{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:07.109615", "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": "2010-Jul-03_to_2010-Jul-06_247.5_60.5"}, "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": 2010070000209}, "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 03 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2010"}, "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": 58935.81238475157}, "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": ["Canada"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": 60.5}, "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": 247.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "247.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 246.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 252.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.53, 59.97], [-113.75, 60.5], [-113.53, 61.03], [-113.0, 61.25], [-112.75, 61.15], [-112.5, 61.25], [-111.97, 61.03], [-111.75, 60.5], [-111.97, 59.97], [-112.5, 59.75], [-112.75, 59.85], [-113.0, 59.75], [-113.53, 59.97]]]]}, "2010-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.53, 61.53], [-113.0, 61.75], [-112.75, 61.65], [-112.68, 61.68], [-112.53, 62.03], [-112.0, 62.25], [-111.75, 62.15], [-111.68, 62.18], [-111.53, 62.53], [-111.0, 62.75], [-110.75, 62.65], [-110.5, 62.75], [-110.25, 62.65], [-110.0, 62.75], [-109.47, 62.53], [-109.32, 62.18], [-108.97, 62.03], [-108.82, 61.68], [-108.47, 61.53], [-108.32, 61.18], [-107.97, 61.03], [-107.82, 60.68], [-107.47, 60.53], [-107.25, 60.0], [-107.47, 59.47], [-108.0, 59.25], [-108.25, 59.35], [-108.5, 59.25], [-108.75, 59.35], [-109.0, 59.25], [-109.25, 59.35], [-109.5, 59.25], [-109.75, 59.35], [-109.82, 59.32], [-109.97, 58.97], [-110.5, 58.75], [-111.03, 58.97], [-111.18, 59.32], [-111.25, 59.35], [-111.5, 59.25], [-111.75, 59.35], [-112.0, 59.25], [-112.25, 59.35], [-112.5, 59.25], [-113.03, 59.47], [-113.18, 59.82], [-113.53, 59.97], [-113.75, 60.5], [-113.65, 60.75], [-113.75, 61.0], [-113.53, 61.53]]]]}, "2010-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.53, 61.53], [-113.0, 61.75], [-112.75, 61.65], [-112.68, 61.68], [-112.53, 62.03], [-112.0, 62.25], [-111.75, 62.15], [-111.68, 62.18], [-111.53, 62.53], [-111.0, 62.75], [-110.75, 62.65], [-110.5, 62.75], [-110.25, 62.65], [-110.0, 62.75], [-109.47, 62.53], [-109.32, 62.18], [-108.97, 62.03], [-108.82, 61.68], [-108.47, 61.53], [-108.32, 61.18], [-107.97, 61.03], [-107.82, 60.68], [-107.47, 60.53], [-107.25, 60.0], [-107.47, 59.47], [-108.0, 59.25], [-108.25, 59.35], [-108.5, 59.25], [-108.75, 59.35], [-109.0, 59.25], [-109.25, 59.35], [-109.5, 59.25], [-109.75, 59.35], [-109.82, 59.32], [-109.97, 58.97], [-110.5, 58.75], [-111.03, 58.97], [-111.18, 59.32], [-111.25, 59.35], [-111.5, 59.25], [-111.75, 59.35], [-112.0, 59.25], [-112.25, 59.35], [-112.5, 59.25], [-113.03, 59.47], [-113.18, 59.82], [-113.53, 59.97], [-113.75, 60.5], [-113.65, 60.75], [-113.75, 61.0], [-113.53, 61.53]]]]}, "2010-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.53, 61.53], [-113.0, 61.75], [-112.75, 61.65], [-112.68, 61.68], [-112.53, 62.03], [-112.0, 62.25], [-111.75, 62.15], [-111.68, 62.18], [-111.53, 62.53], [-111.0, 62.75], [-110.75, 62.65], [-110.5, 62.75], [-110.25, 62.65], [-110.0, 62.75], [-109.47, 62.53], [-109.32, 62.18], [-108.97, 62.03], [-108.82, 61.68], [-108.47, 61.53], [-108.32, 61.18], [-107.97, 61.03], [-107.82, 60.68], [-107.47, 60.53], [-107.25, 60.0], [-107.47, 59.47], [-108.0, 59.25], [-108.25, 59.35], [-108.5, 59.25], [-108.75, 59.35], [-109.0, 59.25], [-109.25, 59.35], [-109.5, 59.25], [-109.75, 59.35], [-109.82, 59.32], [-109.97, 58.97], [-110.5, 58.75], [-111.03, 58.97], [-111.18, 59.32], [-111.25, 59.35], [-111.5, 59.25], [-111.75, 59.35], [-112.0, 59.25], [-112.25, 59.35], [-112.5, 59.25], [-113.03, 59.47], [-113.18, 59.82], [-113.53, 59.97], [-113.75, 60.5], [-113.65, 60.75], [-113.75, 61.0], [-113.53, 61.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.786418446023163}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.201636674370989}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.672510793546621, 10.145766473941137, 10.230699783105763, 9.975404573518915]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.517181461633413, 8.626904992901643, 8.09381708755734, 7.629052157423246]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.364992809430532, -5.204677822439332, -5.113474582750518, -5.329662431509812]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.50583517861628, -6.575209974047652, -6.382047725384439, -6.786418446023163]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3502924496587936, -1.6517411892859446, -1.6170920785320904, -1.6360055244283116]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3831642263769006, -2.041146391008578, -1.82659913214722, -1.9688156236976035]}}