{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:36.991524", "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": "2012-Oct-26_to_2012-Oct-28_99.5_54.0"}, "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": 2012100001044}, "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": "October 26 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 28 2012"}, "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": 63584.7242660857}, "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": ["Mongolia", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": 54.0}, "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": 99.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "99.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 95.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 101.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.47, 53.47], [95.25, 54.0], [95.47, 54.53], [96.0, 54.75], 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"2012-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.47, 53.47], [95.25, 54.0], [95.47, 54.53], [96.0, 54.75], [96.25, 54.65], [96.5, 54.75], [96.75, 54.65], [97.0, 54.75], [97.53, 54.53], [97.68, 54.18], [97.75, 54.15], [98.0, 54.25], [98.25, 54.15], [98.32, 54.18], [98.47, 54.53], [99.0, 54.75], [99.25, 54.65], [99.5, 54.75], [100.03, 54.53], [100.18, 54.18], [100.25, 54.15], [100.5, 54.25], [100.75, 54.15], [101.0, 54.25], [101.53, 54.03], [101.75, 53.5], [101.53, 52.97], [101.13, 52.8], [101.25, 52.5], [101.03, 51.97], [100.5, 51.75], [100.25, 51.85], [100.18, 51.82], [100.03, 51.47], [99.5, 51.25], [99.25, 51.35], [99.18, 51.32], [99.03, 50.97], [98.68, 50.82], [98.53, 50.47], [98.0, 50.25], [97.75, 50.35], [97.5, 50.25], [96.97, 50.47], [96.82, 50.82], [96.47, 50.97], [96.25, 51.5], [96.47, 52.03], [96.82, 52.18], [96.97, 52.53], [97.5, 52.75], [97.25, 52.85], [97.0, 52.75], [96.47, 52.97], [96.32, 53.32], [96.25, 53.35], [96.0, 53.25], [95.47, 53.47]], [[97.75, 52.65], [97.82, 52.68], [97.85, 52.75], [97.82, 52.82], [97.75, 52.85], [97.5, 52.75], [97.75, 52.65]]]]}, "2012-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.47, 53.47], [95.25, 54.0], [95.47, 54.53], [96.0, 54.75], [96.25, 54.65], [96.5, 54.75], [96.75, 54.65], [97.0, 54.75], [97.53, 54.53], [97.68, 54.18], [97.75, 54.15], [98.0, 54.25], [98.25, 54.15], [98.32, 54.18], [98.47, 54.53], [99.0, 54.75], [99.25, 54.65], [99.5, 54.75], [100.03, 54.53], [100.18, 54.18], [100.25, 54.15], [100.5, 54.25], [100.75, 54.15], [101.0, 54.25], [101.53, 54.03], [101.75, 53.5], [101.53, 52.97], [101.13, 52.8], [101.25, 52.5], [101.03, 51.97], [100.5, 51.75], [100.25, 51.85], [100.18, 51.82], [100.03, 51.47], [99.5, 51.25], [99.25, 51.35], [99.18, 51.32], [99.03, 50.97], [98.68, 50.82], [98.53, 50.47], [98.0, 50.25], [97.75, 50.35], [97.5, 50.25], [96.97, 50.47], [96.82, 50.82], [96.47, 50.97], [96.25, 51.5], [96.47, 52.03], [96.82, 52.18], [96.97, 52.53], [97.5, 52.75], [97.25, 52.85], [97.0, 52.75], [96.47, 52.97], [96.32, 53.32], [96.25, 53.35], [96.0, 53.25], [95.47, 53.47]], [[97.75, 52.65], [97.82, 52.68], [97.85, 52.75], [97.82, 52.82], [97.75, 52.85], [97.5, 52.75], [97.75, 52.65]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -18.937973189715905}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -11.208526118134445}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-20.84217586759729, -23.234418430268278, -21.893311319872538]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-25.099954291793182, -28.779099059983764, -27.98612769797009]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-10.019897026713398, -12.445558305579397, -11.160123022110552]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-12.94558378894888, -18.937973189715905, -14.410767921655605]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7340448607011456, -2.1626202424657692, -1.9601721361207196]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.074977803762336, -3.0041377798318556, -2.339780106087851]}}