{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:22.304186", "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": "2015-Jul-04_to_2015-Jul-06_80.5_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": 2015070000322}, "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 04 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2015"}, "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": 125910.5230907196}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 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": 80.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "80.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 77.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 82.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[77.35, 55.75], [77.25, 56.0], [77.35, 56.25], [77.25, 56.5], [77.47, 57.03], [77.82, 57.18], [77.85, 57.25], [77.75, 57.5], [77.97, 58.03], [78.5, 58.25], [78.75, 58.15], [78.82, 58.18], [78.97, 58.53], [79.5, 58.75], [79.75, 58.65], [79.82, 58.68], [79.85, 58.75], [79.75, 59.0], [79.97, 59.53], [80.32, 59.68], [80.47, 60.03], [81.0, 60.25], [81.53, 60.03], [81.75, 59.5], [81.65, 59.25], [81.68, 59.18], [82.03, 59.03], [82.18, 58.68], [82.53, 58.53], [82.75, 58.0], [82.53, 57.47], [82.18, 57.32], [82.15, 57.25], [82.25, 57.0], [82.15, 56.75], [82.25, 56.5], [82.03, 55.97], [81.68, 55.82], [81.65, 55.75], [81.68, 55.68], [82.03, 55.53], [82.25, 55.0], [82.04, 54.5], [82.25, 54.0], [82.15, 53.75], [82.25, 53.5], [82.03, 52.97], [81.5, 52.75], [81.25, 52.85], [81.18, 52.82], [81.03, 52.47], [80.5, 52.25], [79.97, 52.47], [79.82, 52.82], [79.47, 52.97], [79.32, 53.32], [79.25, 53.35], [79.0, 53.25], [78.47, 53.47], [78.32, 53.82], [77.97, 53.97], [77.82, 54.32], [77.47, 54.47], [77.25, 55.0], [77.35, 55.25], [77.25, 55.5], [77.35, 55.75]]]]}, "2015-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[77.35, 55.75], [77.25, 56.0], [77.35, 56.25], [77.25, 56.5], [77.47, 57.03], [77.82, 57.18], [77.85, 57.25], [77.75, 57.5], [77.97, 58.03], [78.5, 58.25], [78.75, 58.15], [78.82, 58.18], [78.97, 58.53], [79.5, 58.75], [79.75, 58.65], [79.82, 58.68], [79.85, 58.75], [79.75, 59.0], [79.97, 59.53], [80.32, 59.68], [80.47, 60.03], [81.0, 60.25], [81.53, 60.03], [81.75, 59.5], [81.65, 59.25], [81.68, 59.18], [82.03, 59.03], [82.18, 58.68], [82.53, 58.53], [82.75, 58.0], [82.53, 57.47], [82.18, 57.32], [82.15, 57.25], [82.25, 57.0], [82.15, 56.75], [82.25, 56.5], [82.03, 55.97], [81.68, 55.82], [81.65, 55.75], [81.68, 55.68], [82.03, 55.53], [82.25, 55.0], [82.04, 54.5], [82.25, 54.0], [82.15, 53.75], [82.25, 53.5], [82.03, 52.97], [81.5, 52.75], [81.25, 52.85], [81.18, 52.82], [81.03, 52.47], [80.5, 52.25], [79.97, 52.47], [79.82, 52.82], [79.47, 52.97], [79.32, 53.32], [79.25, 53.35], [79.0, 53.25], [78.47, 53.47], [78.32, 53.82], [77.97, 53.97], [77.82, 54.32], [77.47, 54.47], [77.25, 55.0], [77.35, 55.25], [77.25, 55.5], [77.35, 55.75]]]]}, "2015-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[77.35, 55.75], [77.25, 56.0], [77.35, 56.25], [77.25, 56.5], [77.47, 57.03], [77.82, 57.18], [77.85, 57.25], [77.75, 57.5], [77.97, 58.03], [78.5, 58.25], [78.75, 58.15], [78.82, 58.18], [78.97, 58.53], [79.5, 58.75], [79.75, 58.65], [79.82, 58.68], [79.85, 58.75], [79.75, 59.0], [79.97, 59.53], [80.32, 59.68], [80.47, 60.03], [81.0, 60.25], [81.53, 60.03], [81.75, 59.5], [81.65, 59.25], [81.68, 59.18], [82.03, 59.03], [82.18, 58.68], [82.53, 58.53], [82.75, 58.0], [82.53, 57.47], [82.18, 57.32], [82.15, 57.25], [82.25, 57.0], [82.15, 56.75], [82.25, 56.5], [82.03, 55.97], [81.68, 55.82], [81.65, 55.75], [81.68, 55.68], [82.03, 55.53], [82.25, 55.0], [82.04, 54.5], [82.25, 54.0], [82.15, 53.75], [82.25, 53.5], [82.03, 52.97], [81.5, 52.75], [81.25, 52.85], [81.18, 52.82], [81.03, 52.47], [80.5, 52.25], [79.97, 52.47], [79.82, 52.82], [79.47, 52.97], [79.32, 53.32], [79.25, 53.35], [79.0, 53.25], [78.47, 53.47], [78.32, 53.82], [77.97, 53.97], [77.82, 54.32], [77.47, 54.47], [77.25, 55.0], [77.35, 55.25], [77.25, 55.5], [77.35, 55.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.350206610152384}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.342927881262178}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.686274267543581, 11.876812373678831, 13.193092713389262]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.641741457990008, 10.87692889315906, 12.48753838814389]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.096513733859433, -7.077805522569503, -5.854464387357587]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.567911570012086, -8.350206610152384, -6.68247125070701]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6810985534593836, -1.9926089205464455, -1.6646705879312678]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9677510474749513, -2.532591792519709, -2.0260659969604977]}}