{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:25.208470", "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-Aug-17_to_2010-Aug-20_104.5_52.0"}, "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": 2010080000796}, "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": "August 17 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 20 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": 238485.4765862616}, "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": 52.0}, "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": 104.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "104.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 100.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 105.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.25}, "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": {"2010-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 54.0], [100.47, 54.53], [100.82, 54.68], [100.85, 54.75], [100.75, 55.0], [100.85, 55.25], [100.75, 55.5], [100.85, 55.75], [100.75, 56.0], [100.85, 56.25], [100.75, 56.5], [100.85, 56.75], [100.75, 57.0], [100.97, 57.53], [101.32, 57.68], [101.35, 57.75], [101.32, 57.82], [100.97, 57.97], [100.75, 58.5], [100.97, 59.03], [101.5, 59.25], [101.75, 59.15], [102.0, 59.25], [102.25, 59.15], [102.5, 59.25], [103.0, 59.04], [103.32, 59.18], [103.35, 59.25], [103.25, 59.5], [103.47, 60.03], [104.0, 60.25], [104.53, 60.03], [104.68, 59.68], [104.75, 59.65], [105.0, 59.75], [105.53, 59.53], [105.75, 59.0], [105.65, 58.75], [105.75, 58.5], [105.53, 57.97], [105.18, 57.82], [105.15, 57.75], [105.25, 57.5], [105.15, 57.25], [105.18, 57.18], [105.53, 57.03], [105.75, 56.5], [105.65, 56.25], [105.75, 56.0], [105.65, 55.75], [105.75, 55.5], [105.53, 54.97], [105.18, 54.82], [105.15, 54.75], [105.25, 54.5], [105.15, 54.25], [105.25, 54.0], [105.03, 53.47], [104.68, 53.32], [104.65, 53.25], [104.68, 53.18], [104.75, 53.15], [105.0, 53.25], [105.53, 53.03], [105.68, 52.68], [106.03, 52.53], [106.25, 52.0], [106.15, 51.75], [106.25, 51.5], [106.15, 51.25], [106.25, 51.0], [106.15, 50.75], [106.25, 50.5], [106.15, 50.25], [106.25, 50.0], [106.15, 49.75], [106.25, 49.5], [106.15, 49.25], [106.25, 49.0], [106.03, 48.47], [105.68, 48.32], [105.53, 47.97], [105.13, 47.8], [105.25, 47.5], [105.03, 46.97], [104.5, 46.75], [104.25, 46.85], [104.0, 46.75], [103.47, 46.97], [103.32, 47.32], [102.97, 47.47], [102.82, 47.82], [102.47, 47.97], [102.25, 48.5], [102.35, 48.75], [102.32, 48.82], [101.97, 48.97], [101.75, 49.5], [101.96, 50.0], [101.75, 50.5], [101.97, 51.03], [102.32, 51.18], [102.47, 51.53], [102.82, 51.68], [102.85, 51.75], [102.82, 51.82], [102.47, 51.97], [102.32, 52.32], [102.25, 52.35], [102.0, 52.25], [101.47, 52.47], [101.32, 52.82], [100.97, 52.97], [100.82, 53.32], [100.47, 53.47], [100.25, 54.0]]]]}, "2010-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 54.0], [100.47, 54.53], [100.82, 54.68], [100.85, 54.75], [100.75, 55.0], [100.85, 55.25], [100.75, 55.5], [100.85, 55.75], [100.75, 56.0], [100.85, 56.25], [100.75, 56.5], [100.85, 56.75], [100.75, 57.0], [100.97, 57.53], [101.32, 57.68], [101.35, 57.75], [101.32, 57.82], [100.97, 57.97], [100.75, 58.5], [100.97, 59.03], [101.5, 59.25], [101.75, 59.15], [102.0, 59.25], [102.25, 59.15], [102.5, 59.25], [103.0, 59.04], [103.32, 59.18], [103.35, 59.25], [103.25, 59.5], [103.47, 60.03], [104.0, 60.25], [104.53, 60.03], [104.68, 59.68], [104.75, 59.65], [105.0, 59.75], [105.53, 59.53], [105.75, 59.0], [105.65, 58.75], [105.75, 58.5], [105.53, 57.97], [105.18, 57.82], [105.15, 57.75], [105.25, 57.5], [105.15, 57.25], [105.18, 57.18], [105.53, 57.03], [105.75, 56.5], [105.65, 56.25], [105.75, 56.0], [105.65, 55.75], [105.75, 55.5], [105.53, 54.97], [105.18, 54.82], [105.15, 54.75], [105.25, 54.5], [105.15, 54.25], [105.25, 54.0], [105.03, 53.47], [104.68, 53.32], [104.65, 53.25], [104.68, 53.18], [104.75, 53.15], [105.0, 53.25], [105.53, 53.03], [105.68, 52.68], [106.03, 52.53], [106.25, 52.0], [106.15, 51.75], [106.25, 51.5], [106.15, 51.25], [106.25, 51.0], [106.15, 50.75], [106.25, 50.5], [106.15, 50.25], [106.25, 50.0], [106.15, 49.75], [106.25, 49.5], [106.15, 49.25], [106.25, 49.0], [106.03, 48.47], [105.68, 48.32], [105.53, 47.97], [105.13, 47.8], [105.25, 47.5], [105.03, 46.97], [104.5, 46.75], [104.25, 46.85], [104.0, 46.75], [103.47, 46.97], [103.32, 47.32], [102.97, 47.47], [102.82, 47.82], [102.47, 47.97], [102.25, 48.5], [102.35, 48.75], [102.32, 48.82], [101.97, 48.97], [101.75, 49.5], [101.96, 50.0], [101.75, 50.5], [101.97, 51.03], [102.32, 51.18], [102.47, 51.53], [102.82, 51.68], [102.85, 51.75], [102.82, 51.82], [102.47, 51.97], [102.32, 52.32], [102.25, 52.35], [102.0, 52.25], [101.47, 52.47], [101.32, 52.82], [100.97, 52.97], [100.82, 53.32], [100.47, 53.47], [100.25, 54.0]]]]}, "2010-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 54.0], [100.47, 54.53], [100.82, 54.68], [100.85, 54.75], [100.75, 55.0], [100.85, 55.25], [100.75, 55.5], [100.85, 55.75], [100.75, 56.0], [100.85, 56.25], [100.75, 56.5], [100.85, 56.75], [100.75, 57.0], [100.97, 57.53], [101.32, 57.68], [101.35, 57.75], [101.32, 57.82], [100.97, 57.97], [100.75, 58.5], [100.97, 59.03], [101.5, 59.25], [101.75, 59.15], [102.0, 59.25], [102.25, 59.15], [102.5, 59.25], [103.0, 59.04], [103.32, 59.18], [103.35, 59.25], [103.25, 59.5], [103.47, 60.03], [104.0, 60.25], [104.53, 60.03], [104.68, 59.68], [104.75, 59.65], [105.0, 59.75], [105.53, 59.53], [105.75, 59.0], [105.65, 58.75], [105.75, 58.5], [105.53, 57.97], [105.18, 57.82], [105.15, 57.75], [105.25, 57.5], [105.15, 57.25], [105.18, 57.18], [105.53, 57.03], [105.75, 56.5], [105.65, 56.25], [105.75, 56.0], [105.65, 55.75], [105.75, 55.5], [105.53, 54.97], [105.18, 54.82], [105.15, 54.75], [105.25, 54.5], [105.15, 54.25], [105.25, 54.0], [105.03, 53.47], [104.68, 53.32], [104.65, 53.25], [104.68, 53.18], [104.75, 53.15], [105.0, 53.25], [105.53, 53.03], [105.68, 52.68], [106.03, 52.53], [106.25, 52.0], [106.15, 51.75], [106.25, 51.5], [106.15, 51.25], [106.25, 51.0], [106.15, 50.75], [106.25, 50.5], [106.15, 50.25], [106.25, 50.0], [106.15, 49.75], [106.25, 49.5], [106.15, 49.25], [106.25, 49.0], [106.03, 48.47], [105.68, 48.32], [105.53, 47.97], [105.13, 47.8], [105.25, 47.5], [105.03, 46.97], [104.5, 46.75], [104.25, 46.85], [104.0, 46.75], [103.47, 46.97], [103.32, 47.32], [102.97, 47.47], [102.82, 47.82], [102.47, 47.97], [102.25, 48.5], [102.35, 48.75], [102.32, 48.82], [101.97, 48.97], [101.75, 49.5], [101.96, 50.0], [101.75, 50.5], [101.97, 51.03], [102.32, 51.18], [102.47, 51.53], [102.82, 51.68], [102.85, 51.75], [102.82, 51.82], [102.47, 51.97], [102.32, 52.32], [102.25, 52.35], [102.0, 52.25], [101.47, 52.47], [101.32, 52.82], [100.97, 52.97], [100.82, 53.32], [100.47, 53.47], [100.25, 54.0]]]]}, "2010-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.47, 49.03], [104.0, 49.25], [104.53, 49.03], [104.75, 48.5], [104.65, 48.25], [104.75, 48.0], [104.53, 47.47], [104.0, 47.25], [103.47, 47.47], [103.25, 48.0], [103.35, 48.25], [103.25, 48.5], [103.47, 49.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.96914688310568}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.63601290960274}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.143478759830202, 8.281620171060183, 10.906488406315873, 13.344058437637614]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.280473403446024, -0.10942891165598212, 5.2878896778190665, 12.790224913936072]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.295618649619706, -7.140278177385077, -4.49586484228882, -4.08216030780946]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.035105274535113, -10.96914688310568, -5.576246875683125, -4.457222850650453]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7922935964453952, -2.362745971907167, -1.47250434105828, -1.218878599465905]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.702165358363706, -3.488997795817867, -1.963827876933148, -1.2920825178511388]}}