{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:08.281738", "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": "2011-Aug-16_to_2011-Aug-18_89.5_24.5"}, "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": 2011080000900}, "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 16 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 18 2011"}, "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": 53550.89185374648}, "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": ["Bangladesh", "India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "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": 24.5}, "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": 89.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "89.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 87.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 90.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.85, 24.25], [86.75, 24.5], [86.97, 25.03], [87.5, 25.25], [87.75, 25.15], [88.0, 25.25], [88.3, 25.13], [88.47, 25.53], [88.82, 25.68], [88.97, 26.03], [89.5, 26.25], [90.03, 26.03], [90.18, 25.68], [90.53, 25.53], [90.75, 25.0], [90.65, 24.75], [90.75, 24.5], [90.53, 23.97], [90.18, 23.82], [90.15, 23.75], [90.25, 23.5], [90.03, 22.97], [89.5, 22.75], [89.25, 22.85], [89.0, 22.75], [88.75, 22.85], [88.5, 22.75], [88.25, 22.85], [88.0, 22.75], [87.75, 22.85], [87.5, 22.75], [86.97, 22.97], [86.75, 23.5], [86.85, 23.75], [86.75, 24.0], [86.85, 24.25]]]]}, "2011-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.85, 24.25], [86.75, 24.5], [86.97, 25.03], [87.5, 25.25], [87.75, 25.15], [88.0, 25.25], [88.3, 25.13], [88.47, 25.53], [88.82, 25.68], [88.97, 26.03], [89.5, 26.25], [90.03, 26.03], [90.18, 25.68], [90.53, 25.53], [90.75, 25.0], [90.65, 24.75], [90.75, 24.5], [90.53, 23.97], [90.18, 23.82], [90.15, 23.75], [90.25, 23.5], [90.03, 22.97], [89.5, 22.75], [89.25, 22.85], [89.0, 22.75], [88.75, 22.85], [88.5, 22.75], [88.25, 22.85], [88.0, 22.75], [87.75, 22.85], [87.5, 22.75], [86.97, 22.97], [86.75, 23.5], [86.85, 23.75], [86.75, 24.0], [86.85, 24.25]]]]}, "2011-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.85, 24.25], [86.75, 24.5], [86.97, 25.03], [87.5, 25.25], [87.75, 25.15], [88.0, 25.25], [88.3, 25.13], [88.47, 25.53], [88.82, 25.68], [88.97, 26.03], [89.5, 26.25], [90.03, 26.03], [90.18, 25.68], [90.53, 25.53], [90.75, 25.0], [90.65, 24.75], [90.75, 24.5], [90.53, 23.97], [90.18, 23.82], [90.15, 23.75], [90.25, 23.5], [90.03, 22.97], [89.5, 22.75], [89.25, 22.85], [89.0, 22.75], [88.75, 22.85], [88.5, 22.75], [88.25, 22.85], [88.0, 22.75], [87.75, 22.85], [87.5, 22.75], [86.97, 22.97], [86.75, 23.5], [86.85, 23.75], [86.75, 24.0], [86.85, 24.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9740419139137657}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0748815064166055}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.83629132806783, 26.185112362993777, 27.06778774758328]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.095900018973623, 25.97271109486843, 26.69929240425455]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9128600880455697, -2.577861949389465, -1.7339224818147816]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5062125070736556, -2.9740419139137657, -2.0966133522532004]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8320115318428243, -2.5095680468411783, -1.6749441822325155]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.230994685137959, -2.962710278785636, -2.1918993852497133]}}