{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:39.294189", "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-May-10_to_2010-May-12_241.0_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": 2010050000319}, "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": "May 10 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2010"}, "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": 75106.5102256108}, "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": 241.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "241.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 239.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 245.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 37.53], [-120.0, 37.75], [-119.75, 37.65], [-119.68, 37.68], [-119.65, 37.75], [-119.75, 38.0], [-119.53, 38.53], [-119.0, 38.75], [-118.47, 38.53], [-118.32, 38.18], [-117.97, 38.03], [-117.75, 37.5], [-117.85, 37.25], [-117.82, 37.18], [-117.47, 37.03], [-117.25, 36.5], [-117.37, 36.2], [-116.97, 36.03], [-116.82, 35.68], [-116.75, 35.65], [-116.5, 35.75], [-116.25, 35.65], [-116.0, 35.75], [-115.75, 35.65], [-115.5, 35.75], [-115.25, 35.65], [-115.0, 35.75], [-114.47, 35.53], [-114.25, 35.0], [-114.47, 34.47], [-114.82, 34.32], [-114.97, 33.97], [-115.5, 33.75], [-115.75, 33.85], [-116.0, 33.75], [-116.53, 33.97], [-116.68, 34.32], [-116.75, 34.35], [-117.0, 34.25], [-117.25, 34.35], [-117.5, 34.25], [-117.75, 34.35], [-118.0, 34.25], [-118.25, 34.35], [-118.5, 34.25], [-119.0, 34.46], [-119.5, 34.25], [-120.03, 34.47], [-120.25, 35.0], [-120.15, 35.25], [-120.18, 35.32], [-120.53, 35.47], [-120.75, 36.0], [-120.54, 36.5], [-120.75, 37.0], [-120.53, 37.53]]]]}, "2010-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 37.53], [-120.0, 37.75], [-119.75, 37.65], [-119.68, 37.68], [-119.65, 37.75], [-119.75, 38.0], [-119.53, 38.53], [-119.0, 38.75], [-118.47, 38.53], [-118.32, 38.18], [-117.97, 38.03], [-117.75, 37.5], [-117.85, 37.25], [-117.82, 37.18], [-117.47, 37.03], [-117.25, 36.5], [-117.37, 36.2], [-116.97, 36.03], [-116.82, 35.68], [-116.75, 35.65], [-116.5, 35.75], [-116.25, 35.65], [-116.0, 35.75], [-115.75, 35.65], [-115.5, 35.75], [-115.25, 35.65], [-115.0, 35.75], [-114.47, 35.53], [-114.25, 35.0], [-114.47, 34.47], [-114.82, 34.32], [-114.97, 33.97], [-115.5, 33.75], [-115.75, 33.85], [-116.0, 33.75], [-116.53, 33.97], [-116.68, 34.32], [-116.75, 34.35], [-117.0, 34.25], [-117.25, 34.35], [-117.5, 34.25], [-117.75, 34.35], [-118.0, 34.25], [-118.25, 34.35], [-118.5, 34.25], [-119.0, 34.46], [-119.5, 34.25], [-120.03, 34.47], [-120.25, 35.0], [-120.15, 35.25], [-120.18, 35.32], [-120.53, 35.47], [-120.75, 36.0], [-120.54, 36.5], [-120.75, 37.0], [-120.53, 37.53]]]]}, "2010-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 37.53], [-120.0, 37.75], [-119.75, 37.65], [-119.68, 37.68], [-119.65, 37.75], [-119.75, 38.0], [-119.53, 38.53], [-119.0, 38.75], [-118.47, 38.53], [-118.32, 38.18], [-117.97, 38.03], [-117.75, 37.5], [-117.85, 37.25], [-117.82, 37.18], [-117.47, 37.03], [-117.25, 36.5], [-117.37, 36.2], [-116.97, 36.03], [-116.82, 35.68], [-116.75, 35.65], [-116.5, 35.75], [-116.25, 35.65], [-116.0, 35.75], [-115.75, 35.65], [-115.5, 35.75], [-115.25, 35.65], [-115.0, 35.75], [-114.47, 35.53], [-114.25, 35.0], [-114.47, 34.47], [-114.82, 34.32], [-114.97, 33.97], [-115.5, 33.75], [-115.75, 33.85], [-116.0, 33.75], [-116.53, 33.97], [-116.68, 34.32], [-116.75, 34.35], [-117.0, 34.25], [-117.25, 34.35], [-117.5, 34.25], [-117.75, 34.35], [-118.0, 34.25], [-118.25, 34.35], [-118.5, 34.25], [-119.0, 34.46], [-119.5, 34.25], [-120.03, 34.47], [-120.25, 35.0], [-120.15, 35.25], [-120.18, 35.32], [-120.53, 35.47], [-120.75, 36.0], [-120.54, 36.5], [-120.75, 37.0], [-120.53, 37.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.299682475563145}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.257336153947671}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.227908322209771, 8.551799290797192, 10.764448736587667]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.9756978556678177, -5.507097363747107, -2.914699724270065]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.611317818790826, -8.5669310644499, -6.593759578602292]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.897392712417798, -10.299682475563145, -7.516558892828073]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7195560348438805, -2.19595165612632, -1.6553232508196496]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0547358512997023, -2.6844530525186605, -1.8485177803504516]}}