{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:37.492966", "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-28_to_2012-Oct-31_85.0_23.5"}, "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": 2012100001144}, "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 28 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 31 2012"}, "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": 59360.23124067596}, "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": ["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": 23.5}, "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": 85.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "85.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 82.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 86.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.97, 24.03], [82.5, 24.25], [82.8, 24.13], [82.97, 24.53], 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[84.75, 25.65], [85.0, 25.75], [85.25, 25.65], [85.5, 25.75], [85.75, 25.65], [86.0, 25.75], [86.53, 25.53], [86.75, 25.0], [86.53, 24.47], [86.13, 24.3], [86.25, 24.0], [86.13, 23.7], [86.53, 23.53], [86.75, 23.0], [86.53, 22.47], [86.0, 22.25], [85.75, 22.35], [85.5, 22.25], [84.97, 22.47], [84.82, 22.82], [84.7, 22.88], [84.53, 22.47], [84.18, 22.32], [84.03, 21.97], [83.5, 21.75], [82.97, 21.97], [82.82, 22.32], [82.75, 22.35], [82.5, 22.25], [81.97, 22.47], [81.75, 23.0], [81.85, 23.25], [81.75, 23.5], [81.97, 24.03]]]]}, "2012-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.97, 24.03], [82.32, 24.18], [82.47, 24.53], [83.0, 24.75], [83.25, 24.65], [83.32, 24.68], [83.35, 24.75], [83.25, 25.0], [83.47, 25.53], [84.0, 25.75], [84.25, 25.65], [84.5, 25.75], [84.75, 25.65], [85.0, 25.75], [85.25, 25.65], [85.5, 25.75], [85.75, 25.65], [86.0, 25.75], [86.53, 25.53], [86.75, 25.0], [86.53, 24.47], [86.13, 24.3], [86.25, 24.0], [86.13, 23.7], [86.53, 23.53], [86.75, 23.0], [86.53, 22.47], [86.0, 22.25], [85.75, 22.35], [85.5, 22.25], [84.97, 22.47], [84.82, 22.82], [84.7, 22.88], [84.53, 22.47], [84.18, 22.32], [84.03, 21.97], [83.5, 21.75], [82.97, 21.97], [82.82, 22.32], [82.75, 22.35], [82.5, 22.25], [81.97, 22.47], [81.75, 23.0], [81.85, 23.25], [81.75, 23.5], [81.97, 24.03]]]]}, "2012-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.25, 24.0], [82.47, 24.53], [83.0, 24.75], [83.53, 24.53], [83.68, 24.18], [83.8, 24.13], [83.97, 24.53], [84.5, 24.75], [85.03, 24.53], [85.25, 24.0], [85.03, 23.47], [84.5, 23.25], [84.2, 23.38], [84.03, 22.97], [83.5, 22.75], [82.97, 22.97], [82.82, 23.32], [82.47, 23.47], [82.25, 24.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8277246984848716}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9417044977333857}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.09763732896738, 20.495782575673843, 20.984361499271415, 20.78249920158612]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.97488753687486, 18.10716678015416, 18.461496430454645, 19.467839355679814]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8060374989358807, -2.3034511611647766, -1.7461581290149135, -1.5923044275279874]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.336191995221725, -2.8277246984848716, -2.39762468789246, -1.7674457083513175]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6451833648198557, -2.0747047540768286, -1.4982025738440392, -1.3395307554665434]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.300782173424784, -2.738137804111765, -2.0105665473617798, -1.5011475740925084]}}