{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:51.124345", "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-11_to_2010-Jun-14_248.0_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": 2010060000412}, "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 11 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 14 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": 139080.96930987216}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 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": 248.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "248.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 245.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 249.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.03, 41.03], [-112.5, 41.25], [-112.25, 41.15], [-112.0, 41.25], [-111.47, 41.03], [-111.25, 40.5], [-111.47, 39.97], [-112.0, 39.75], [-112.25, 39.85], [-112.5, 39.75], [-112.93, 39.93], [-112.75, 39.5], [-112.97, 38.97], [-113.5, 38.75], [-114.03, 38.97], [-114.25, 39.5], [-114.03, 40.03], [-113.5, 40.25], [-113.07, 40.07], [-113.25, 40.5], [-113.03, 41.03]]]]}, "2010-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.53, 38.53], [-114.18, 38.68], [-114.15, 38.75], [-114.25, 39.0], [-114.15, 39.25], [-114.25, 39.5], [-114.03, 40.03], [-113.68, 40.18], [-113.53, 40.53], [-113.18, 40.68], [-113.03, 41.03], [-112.5, 41.25], [-112.25, 41.15], [-112.0, 41.25], [-111.47, 41.03], [-111.32, 40.68], [-110.97, 40.53], [-110.75, 40.0], [-110.85, 39.75], [-110.75, 39.5], [-110.85, 39.25], [-110.82, 39.18], [-110.47, 39.03], [-110.32, 38.68], [-109.97, 38.53], [-109.75, 38.0], [-109.85, 37.75], [-109.75, 37.5], [-109.85, 37.25], [-109.75, 37.0], [-109.97, 36.47], [-110.37, 36.3], [-110.25, 36.0], [-110.35, 35.75], [-110.25, 35.5], [-110.35, 35.25], [-110.25, 35.0], [-110.47, 34.47], [-111.0, 34.25], [-111.53, 34.47], [-111.68, 34.82], [-111.75, 34.85], [-112.0, 34.75], [-112.25, 34.85], [-112.5, 34.75], [-113.03, 34.97], [-113.25, 35.5], [-113.15, 35.75], [-113.18, 35.82], [-113.53, 35.97], [-113.75, 36.5], [-113.65, 36.75], [-113.68, 36.82], [-113.75, 36.85], [-114.0, 36.75], [-114.53, 36.97], [-114.75, 37.5], [-114.65, 37.75], [-114.75, 38.0], [-114.53, 38.53]]]]}, "2010-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.53, 38.53], [-114.18, 38.68], [-114.15, 38.75], [-114.25, 39.0], [-114.15, 39.25], [-114.25, 39.5], [-114.03, 40.03], [-113.68, 40.18], [-113.53, 40.53], [-113.18, 40.68], [-113.03, 41.03], [-112.5, 41.25], [-112.25, 41.15], [-112.0, 41.25], [-111.47, 41.03], [-111.32, 40.68], [-110.97, 40.53], [-110.75, 40.0], [-110.85, 39.75], [-110.75, 39.5], [-110.85, 39.25], [-110.82, 39.18], [-110.47, 39.03], [-110.32, 38.68], [-109.97, 38.53], [-109.75, 38.0], [-109.85, 37.75], [-109.75, 37.5], [-109.85, 37.25], [-109.75, 37.0], [-109.97, 36.47], [-110.37, 36.3], [-110.25, 36.0], [-110.35, 35.75], [-110.25, 35.5], [-110.35, 35.25], [-110.25, 35.0], [-110.47, 34.47], [-111.0, 34.25], [-111.53, 34.47], [-111.68, 34.82], [-111.75, 34.85], [-112.0, 34.75], [-112.25, 34.85], [-112.5, 34.75], [-113.03, 34.97], [-113.25, 35.5], [-113.15, 35.75], [-113.18, 35.82], [-113.53, 35.97], [-113.75, 36.5], [-113.65, 36.75], [-113.68, 36.82], [-113.75, 36.85], [-114.0, 36.75], [-114.53, 36.97], [-114.75, 37.5], [-114.65, 37.75], [-114.75, 38.0], [-114.53, 38.53]]]]}, "2010-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.53, 38.53], [-114.18, 38.68], [-114.15, 38.75], [-114.25, 39.0], [-114.03, 39.53], [-113.68, 39.68], [-113.65, 39.75], [-113.75, 40.0], [-113.53, 40.53], [-113.0, 40.75], [-112.75, 40.65], [-112.68, 40.68], [-112.53, 41.03], [-112.0, 41.25], [-111.47, 41.03], [-111.32, 40.68], [-110.97, 40.53], [-110.75, 40.0], [-110.85, 39.75], [-110.75, 39.5], [-110.85, 39.25], [-110.82, 39.18], [-110.47, 39.03], [-110.32, 38.68], [-109.97, 38.53], [-109.75, 38.0], [-109.85, 37.75], [-109.75, 37.5], [-109.85, 37.25], [-109.75, 37.0], [-109.97, 36.47], [-110.37, 36.3], [-110.25, 36.0], [-110.35, 35.75], [-110.25, 35.5], [-110.35, 35.25], [-110.25, 35.0], [-110.47, 34.47], [-111.0, 34.25], [-111.53, 34.47], [-111.68, 34.82], [-111.75, 34.85], [-112.0, 34.75], [-112.25, 34.85], [-112.5, 34.75], [-113.03, 34.97], [-113.25, 35.5], [-113.15, 35.75], [-113.18, 35.82], [-113.53, 35.97], [-113.75, 36.5], [-113.65, 36.75], [-113.68, 36.82], [-113.75, 36.85], [-114.0, 36.75], [-114.53, 36.97], [-114.75, 37.5], [-114.65, 37.75], [-114.75, 38.0], [-114.53, 38.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.574800048683926}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.549052524139351}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.542071637180982, 12.608703055510773, 11.848277084255017, 13.938630129519368]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.977182075145777, 6.407863877863406, 5.7166141793339875, 7.755172981952285]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.8425411324721495, -7.442316149542245, -8.547057931160666, -6.663910693717923]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.07257994337175, -10.574800048683926, -10.327226284905862, -8.543758630577656]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.411046381741105, -1.9094175218076497, -2.366395585552231, -1.8560098715717177]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4422827673184244, -2.438567285659953, -2.9524537586462434, -2.462366570991635]}}