{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:52.065239", "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-Jun-15_to_2010-Jun-19_244.5_50.5"}, "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": 2010060000563}, "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": "June 15 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 75202.14411026564}, "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", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "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": 50.5}, "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": 244.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "244.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 244.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 248.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.03, 52.53], [-115.5, 52.75], [-114.97, 52.53], [-114.82, 52.18], [-114.75, 52.15], [-114.5, 52.25], [-114.25, 52.15], [-114.0, 52.25], [-113.75, 52.15], [-113.5, 52.25], [-113.25, 52.15], [-113.0, 52.25], [-112.47, 52.03], [-112.25, 51.5], [-112.35, 51.25], [-112.25, 51.0], [-112.47, 50.47], [-113.0, 50.25], [-113.25, 50.35], [-113.5, 50.25], [-113.75, 50.35], [-114.0, 50.25], [-114.25, 50.35], [-114.32, 50.32], [-114.47, 49.97], [-115.0, 49.75], [-115.25, 49.85], [-115.5, 49.75], [-116.03, 49.97], [-116.25, 50.5], [-116.04, 51.0], [-116.25, 51.5], [-116.15, 51.75], [-116.25, 52.0], [-116.03, 52.53]]]]}, "2010-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.03, 52.53], [-115.5, 52.75], [-114.97, 52.53], [-114.82, 52.18], [-114.75, 52.15], [-114.5, 52.25], [-114.25, 52.15], [-114.0, 52.25], [-113.75, 52.15], [-113.5, 52.25], [-113.25, 52.15], [-113.0, 52.25], [-112.47, 52.03], [-112.25, 51.5], [-112.35, 51.25], [-112.32, 51.18], [-111.97, 51.03], [-111.82, 50.68], [-111.47, 50.53], [-111.25, 50.0], [-111.35, 49.75], [-111.25, 49.5], [-111.35, 49.25], [-111.25, 49.0], [-111.47, 48.47], [-111.82, 48.32], [-111.85, 48.25], [-111.75, 48.0], [-111.97, 47.47], [-112.5, 47.25], [-113.03, 47.47], [-113.25, 48.0], [-113.15, 48.25], [-113.18, 48.32], [-113.25, 48.35], [-113.5, 48.25], [-113.75, 48.35], [-114.0, 48.25], [-114.53, 48.47], [-114.68, 48.82], [-115.03, 48.97], [-115.18, 49.32], [-115.53, 49.47], [-115.68, 49.82], [-116.03, 49.97], [-116.25, 50.5], [-116.04, 51.0], [-116.25, 51.5], [-116.15, 51.75], [-116.25, 52.0], [-116.03, 52.53]]]]}, "2010-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.03, 52.53], [-115.5, 52.75], [-114.97, 52.53], [-114.82, 52.18], [-114.75, 52.15], [-114.5, 52.25], [-114.25, 52.15], [-114.0, 52.25], [-113.75, 52.15], [-113.5, 52.25], [-113.25, 52.15], [-113.0, 52.25], [-112.47, 52.03], [-112.25, 51.5], [-112.35, 51.25], [-112.32, 51.18], [-111.97, 51.03], [-111.82, 50.68], [-111.75, 50.65], [-111.5, 50.75], [-110.97, 50.53], [-110.75, 50.0], [-110.97, 49.47], [-111.32, 49.32], [-111.35, 49.25], [-111.25, 49.0], [-111.47, 48.47], [-111.82, 48.32], [-111.85, 48.25], [-111.75, 48.0], [-111.97, 47.47], [-112.5, 47.25], [-113.03, 47.47], [-113.25, 48.0], [-113.15, 48.25], [-113.18, 48.32], [-113.25, 48.35], [-113.5, 48.25], [-113.75, 48.35], [-114.0, 48.25], [-114.53, 48.47], [-114.68, 48.82], [-115.03, 48.97], [-115.18, 49.32], [-115.53, 49.47], [-115.68, 49.82], [-116.03, 49.97], [-116.25, 50.5], [-116.04, 51.0], [-116.25, 51.5], [-116.15, 51.75], [-116.25, 52.0], [-116.03, 52.53]]]]}, "2010-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.25, 50.5], [-116.03, 51.03], [-115.5, 51.25], [-114.97, 51.03], [-114.82, 50.68], [-114.75, 50.65], [-114.5, 50.75], [-114.25, 50.65], [-114.18, 50.68], [-114.03, 51.03], [-113.5, 51.25], [-113.25, 51.15], [-113.0, 51.25], [-112.75, 51.15], [-112.5, 51.25], [-111.97, 51.03], [-111.82, 50.68], [-111.75, 50.65], [-111.5, 50.75], [-110.97, 50.53], [-110.75, 50.0], [-110.97, 49.47], [-111.32, 49.32], [-111.35, 49.25], [-111.25, 49.0], [-111.47, 48.47], [-111.82, 48.32], [-111.85, 48.25], [-111.75, 48.0], [-111.97, 47.47], [-112.5, 47.25], [-113.03, 47.47], [-113.25, 48.0], [-113.15, 48.25], [-113.18, 48.32], [-113.25, 48.35], [-113.5, 48.25], [-113.75, 48.35], [-114.0, 48.25], [-114.53, 48.47], [-114.68, 48.82], [-115.03, 48.97], [-115.18, 49.32], [-115.53, 49.47], [-115.68, 49.82], [-116.03, 49.97], [-116.25, 50.5]]]]}, "2010-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.53, 49.47], [-112.75, 50.0], [-112.53, 50.53], [-112.0, 50.75], [-111.75, 50.65], [-111.5, 50.75], [-110.97, 50.53], [-110.75, 50.0], [-110.97, 49.47], [-111.5, 49.25], [-111.75, 49.35], [-112.0, 49.25], [-112.53, 49.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.923169904250869}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.6042906640158865}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.232711600106541, 7.909296284490267, 7.108958945608492, 8.015435762804941, 11.875741512311834]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.154051350882412, 0.7376007556762829, 1.5662247669034741, 3.3213612803662613, 11.843359834273599]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7660278632823867, -4.209522126878144, -5.127352772436124, -4.903049026814292, -4.102688611234015]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.907017724010416, -5.015687457431284, -6.923169904250869, -6.0916770830190785, -4.12067636969266]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.38382831930989, -1.5266180249976677, -1.8605036360670932, -1.6717253575962083, -1.341648554238986]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8746026469355859, -1.9289227740688888, -2.5183949672729957, -2.048624102052069, -1.3417374604621803]}}