{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:25.609868", "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": "2017-Jul-04_to_2017-Jul-06_83.5_25.5"}, "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": 2017070000186}, "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 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2017"}, "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": 66989.77088025365}, "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": 25.5}, "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": 83.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "83.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 80.75}, "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": 24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.35, 26.75], [80.25, 27.0], [80.47, 27.53], [81.0, 27.75], [81.53, 27.53], [81.68, 27.18], [82.03, 27.03], [82.18, 26.68], [82.53, 26.53], [82.68, 26.18], [82.75, 26.15], [83.0, 26.25], [83.25, 26.15], [83.5, 26.25], [83.75, 26.15], [84.0, 26.25], [84.25, 26.15], [84.5, 26.25], [84.75, 26.15], [85.0, 26.25], [85.53, 26.03], [85.68, 25.68], [85.75, 25.65], [86.0, 25.75], [86.53, 25.53], [86.75, 25.0], [86.53, 24.47], [86.18, 24.32], [86.03, 23.97], [85.5, 23.75], [85.25, 23.85], [85.0, 23.75], [84.75, 23.85], [84.5, 23.75], [83.97, 23.97], [83.8, 24.38], [83.5, 24.25], [83.25, 24.35], [83.0, 24.25], [82.75, 24.35], [82.5, 24.25], [81.97, 24.47], [81.82, 24.82], [81.75, 24.85], [81.5, 24.75], [80.97, 24.97], [80.82, 25.32], [80.47, 25.47], [80.25, 26.0], [80.35, 26.25], [80.25, 26.5], [80.35, 26.75]]]]}, "2017-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.35, 26.75], [80.25, 27.0], [80.47, 27.53], [81.0, 27.75], [81.53, 27.53], [81.68, 27.18], [82.03, 27.03], [82.18, 26.68], [82.53, 26.53], [82.68, 26.18], [82.75, 26.15], [83.0, 26.25], [83.25, 26.15], [83.5, 26.25], [83.75, 26.15], [84.0, 26.25], [84.25, 26.15], [84.5, 26.25], [84.75, 26.15], [85.0, 26.25], [85.53, 26.03], [85.68, 25.68], [85.75, 25.65], [86.0, 25.75], [86.53, 25.53], [86.75, 25.0], [86.53, 24.47], [86.18, 24.32], [86.03, 23.97], [85.5, 23.75], [85.25, 23.85], [85.0, 23.75], [84.75, 23.85], [84.5, 23.75], [83.97, 23.97], [83.8, 24.38], [83.5, 24.25], [83.25, 24.35], [83.0, 24.25], [82.75, 24.35], [82.5, 24.25], [81.97, 24.47], [81.82, 24.82], [81.75, 24.85], [81.5, 24.75], [80.97, 24.97], [80.82, 25.32], [80.47, 25.47], [80.25, 26.0], [80.35, 26.25], [80.25, 26.5], [80.35, 26.75]]]]}, "2017-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.35, 26.75], [80.25, 27.0], [80.47, 27.53], [81.0, 27.75], [81.53, 27.53], [81.68, 27.18], [82.03, 27.03], [82.18, 26.68], [82.53, 26.53], [82.68, 26.18], [82.75, 26.15], [83.0, 26.25], [83.25, 26.15], [83.5, 26.25], [83.75, 26.15], [84.0, 26.25], [84.25, 26.15], [84.5, 26.25], [84.75, 26.15], [85.0, 26.25], [85.53, 26.03], [85.68, 25.68], [85.75, 25.65], [86.0, 25.75], [86.53, 25.53], [86.75, 25.0], [86.53, 24.47], [86.18, 24.32], [86.03, 23.97], [85.5, 23.75], [85.25, 23.85], [85.0, 23.75], [84.75, 23.85], [84.5, 23.75], [83.97, 23.97], [83.8, 24.38], [83.5, 24.25], [83.25, 24.35], [83.0, 24.25], [82.75, 24.35], [82.5, 24.25], [81.97, 24.47], [81.82, 24.82], [81.75, 24.85], [81.5, 24.75], [80.97, 24.97], [80.82, 25.32], [80.47, 25.47], [80.25, 26.0], [80.35, 26.25], [80.25, 26.5], [80.35, 26.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.707123175932395}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.345130582661842}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.242705697272413, 26.51647414531635, 27.324332626587818]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.221769810483977, 25.935802206494202, 26.372155126935183]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2090840492682227, -3.860123366194299, -2.9661843325230044]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.0277567720658, -4.707123175932395, -3.584318355748451]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6867428063943068, -2.033906789211409, -1.5532739448004813]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0015867623493837, -2.30122190478885, -1.7676954325409209]}}