{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:33.430064", "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-02_to_2012-Oct-07_72.5_18.5"}, "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": 2012100000163}, "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 02 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 07 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 52889.307633460165}, "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": ["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": 18.5}, "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": 72.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "72.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 71.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 75.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.0, 18.25], [72.53, 18.03], [72.75, 17.5], [72.53, 16.97], [72.0, 16.75], [71.47, 16.97], [71.25, 17.5], [71.47, 18.03], [72.0, 18.25]]]]}, "2012-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.47, 18.53], [72.0, 18.75], [72.53, 18.53], [72.75, 18.0], [72.65, 17.75], [72.75, 17.5], [72.53, 16.97], [72.0, 16.75], [71.47, 16.97], [71.25, 17.5], [71.35, 17.75], [71.25, 18.0], [71.47, 18.53]]]]}, "2012-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.47, 18.53], [71.82, 18.68], [71.85, 18.75], [71.75, 19.0], [71.97, 19.53], [72.5, 19.75], [73.03, 19.53], [73.25, 19.0], [73.15, 18.75], [73.25, 18.5], [73.15, 18.25], [73.25, 18.0], [73.03, 17.47], [72.68, 17.32], [72.53, 16.97], [72.0, 16.75], [71.47, 16.97], [71.25, 17.5], [71.35, 17.75], [71.25, 18.0], [71.47, 18.53]]]]}, "2012-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.75, 19.0], [71.97, 19.53], [72.5, 19.75], [72.75, 19.65], [73.0, 19.75], [73.53, 19.53], [73.7, 19.13], [74.0, 19.25], [74.25, 19.15], [74.5, 19.25], [75.03, 19.03], [75.18, 18.68], [75.53, 18.53], [75.75, 18.0], [75.53, 17.47], [75.18, 17.32], [75.03, 16.97], [74.5, 16.75], [74.25, 16.85], [74.0, 16.75], [73.75, 16.85], [73.5, 16.75], [73.25, 16.85], [73.0, 16.75], [72.47, 16.97], [72.32, 17.32], [72.25, 17.35], [72.0, 17.25], [71.47, 17.47], [71.25, 18.0], [71.47, 18.53], [71.82, 18.68], [71.85, 18.75], [71.75, 19.0]]]]}, "2012-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.85, 18.75], [71.75, 19.0], [71.97, 19.53], [72.5, 19.75], [72.75, 19.65], [73.0, 19.75], [73.53, 19.53], [73.7, 19.13], [74.0, 19.25], [74.25, 19.15], [74.5, 19.25], [75.03, 19.03], [75.18, 18.68], [75.53, 18.53], [75.75, 18.0], [75.53, 17.47], [75.18, 17.32], [75.03, 16.97], [74.5, 16.75], [74.25, 16.85], [74.0, 16.75], [73.75, 16.85], [73.5, 16.75], [73.25, 16.85], [73.0, 16.75], [72.47, 16.97], [72.32, 17.32], [71.97, 17.47], [71.75, 18.0], [71.85, 18.25], [71.75, 18.5], [71.85, 18.75]]]]}, "2012-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.85, 18.75], [71.75, 19.0], [71.97, 19.53], [72.5, 19.75], [72.75, 19.65], [73.0, 19.75], [73.53, 19.53], [73.7, 19.13], [74.0, 19.25], [74.25, 19.15], [74.5, 19.25], [75.03, 19.03], [75.18, 18.68], [75.53, 18.53], [75.75, 18.0], [75.53, 17.47], [75.18, 17.32], [75.03, 16.97], [74.5, 16.75], [74.25, 16.85], [74.0, 16.75], [73.75, 16.85], [73.5, 16.75], [73.25, 16.85], [73.0, 16.75], [72.47, 16.97], [72.32, 17.32], [71.97, 17.47], [71.75, 18.0], [71.85, 18.25], [71.75, 18.5], [71.85, 18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8651323278348286}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5950018154171561}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.52092652949267, 26.653745400263574, 26.44017674392154, 24.68708873964323, 24.840493161313816, 24.758425771666055]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.52092652949267, 26.59633290130165, 26.174188614592083, 22.084798144982358, 22.641695735040514, 22.28240225774772]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2391481758461396, -1.1584633632114958, -1.4036796333444272, -1.7294985719029128, -1.5263856726109353, -1.6573114953538841]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2391481758461396, -1.168673828641829, -1.6837777288150733, -2.8651323278348286, -2.075899970448461, -2.073116669762726]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.455339076692127, -1.2866579169894363, -1.5050847298083725, -1.601588324358773, -1.4899569978206764, -1.6559294152180706]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.455339076692127, -1.319919580724913, -1.7886343493706665, -1.9452770583415766, -1.9782337329044462, -2.206888299012682]}}