{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:55.859129", "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": "2024-Nov-24_to_2024-Nov-30_74.5_19.5"}, "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": 2024110000506}, "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": "November 24 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 30 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 79098.42294797758}, "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"]}, "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": ["Arabian Sea"]}, "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": 19.5}, "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": 74.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "74.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 73.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 77.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[72.47, 19.53], [72.82, 19.68], [72.97, 20.03], [73.5, 20.25], [73.75, 20.15], [74.0, 20.25], [74.25, 20.15], [74.5, 20.25], [74.75, 20.15], [75.0, 20.25], [75.53, 20.03], [75.68, 19.68], [75.75, 19.65], [76.0, 19.75], [76.25, 19.65], [76.5, 19.75], [76.75, 19.65], [77.0, 19.75], [77.53, 19.53], [77.68, 19.18], [78.03, 19.03], [78.25, 18.5], [78.03, 17.97], [77.5, 17.75], [76.97, 17.97], [76.82, 18.32], [76.75, 18.35], [76.5, 18.25], [76.25, 18.35], [76.18, 18.32], [76.03, 17.97], [75.63, 17.8], [75.75, 17.5], [75.53, 16.97], [75.0, 16.75], [74.75, 16.85], [74.5, 16.75], [74.25, 16.85], [74.0, 16.75], [73.75, 16.85], [73.5, 16.75], [72.97, 16.97], [72.82, 17.32], [72.47, 17.47], [72.25, 18.0], [72.35, 18.25], [72.25, 18.5], [72.35, 18.75], [72.25, 19.0], [72.47, 19.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.47, 19.53], [76.0, 19.75], [76.53, 19.53], [76.75, 19.0], [76.53, 18.47], [76.0, 18.25], [75.47, 18.47], [75.25, 19.0], [75.47, 19.53]]]]}, "2024-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.25, 18.5], [73.35, 18.75], [73.25, 19.0], [73.47, 19.53], [73.82, 19.68], [73.97, 20.03], [74.5, 20.25], [74.75, 20.15], [75.0, 20.25], [75.53, 20.03], [75.68, 19.68], [75.75, 19.65], [76.0, 19.75], [76.25, 19.65], [76.5, 19.75], [77.03, 19.53], [77.25, 19.0], [77.03, 18.47], [76.5, 18.25], [76.25, 18.35], [76.18, 18.32], [76.03, 17.97], [75.5, 17.75], [75.0, 17.96], [74.68, 17.82], [74.53, 17.47], [74.0, 17.25], [73.47, 17.47], [73.25, 18.0], [73.35, 18.25], [73.25, 18.5]]]]}, "2024-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.25, 19.0], [72.47, 19.53], [73.0, 19.75], [73.25, 19.65], [73.32, 19.68], [73.47, 20.03], [74.0, 20.25], [74.25, 20.15], [74.5, 20.25], [74.75, 20.15], [75.0, 20.25], [75.53, 20.03], [75.68, 19.68], [75.75, 19.65], [76.0, 19.75], 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18.5]]]]}, "2024-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.25, 18.5], [72.35, 18.75], [72.25, 19.0], [72.47, 19.53], [72.82, 19.68], [72.97, 20.03], [73.5, 20.25], [73.75, 20.15], [74.0, 20.25], [74.25, 20.15], [74.5, 20.25], [75.03, 20.03], [75.25, 19.5], [75.04, 19.0], [75.25, 18.5], [75.03, 17.97], [74.5, 17.75], [74.25, 17.85], [74.18, 17.82], [74.03, 17.47], [73.5, 17.25], [73.25, 17.35], [73.0, 17.25], [72.47, 17.47], [72.25, 18.0], [72.35, 18.25], [72.25, 18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7012824951557945}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4075540308007497}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.648989613850915, 20.314648160067463, 20.87018245752307, 20.76781458536783, 20.735935700969947, 20.46889394124355, 21.368154953465364]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.648989613850915, 19.614297485351585, 18.200978851318382, 18.09286015828451, 17.90329259236654, 17.155417378743493, 17.84584197998049]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3479814204574723, -2.3531643113005885, -2.272695423849966, -2.3228741511914337, -2.4842162265284657, -2.7036633869418694, -2.1075631801562724]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3479814204574723, -2.957894132733486, -3.1720847704676203, -3.1989319163121763, -3.6234055132048297, -3.7012824951557945, -2.833367883078722]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.46163064600597, -1.5646079050063855, -1.6158095298690645, -1.6170032814056086, -1.7629428451851854, -1.9848293916797901, -1.6424463838297]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.46163064600597, -1.8683933768102654, -2.1302740859423404, -2.115206199175806, -2.339998176429338, -2.4470698991727953, -1.8559377944182385]}}