{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:42.006446", "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": "2013-Oct-21_to_2013-Nov-02_71.0_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": 2013100000935}, "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 21 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 02 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 13}, "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": 82620.19388135159}, "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": 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": 71.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "71.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 69.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 73.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.97, 23.03], [71.5, 23.25], [71.75, 23.15], [72.0, 23.25], [72.53, 23.03], [72.75, 22.5], [72.65, 22.25], [72.75, 22.0], [72.53, 21.47], [72.0, 21.25], [71.47, 21.47], [71.32, 21.82], [70.97, 21.97], [70.75, 22.5], [70.97, 23.03]]], [[[69.97, 23.47], [69.75, 24.0], [69.97, 24.53], [70.5, 24.75], [71.03, 24.53], [71.25, 24.0], [71.03, 23.47], [70.5, 23.25], [69.97, 23.47]]]]}, "2013-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.75, 24.0], [69.97, 24.53], [70.5, 24.75], [71.03, 24.53], [71.18, 24.18], [71.25, 24.15], [71.5, 24.25], [72.03, 24.03], [72.25, 23.5], [72.15, 23.25], [72.18, 23.18], [72.53, 23.03], [72.75, 22.5], [72.65, 22.25], [72.75, 22.0], [72.53, 21.47], [72.0, 21.25], [71.47, 21.47], [71.32, 21.82], [70.97, 21.97], [70.82, 22.32], [70.47, 22.47], [70.25, 23.0], [70.35, 23.25], [70.32, 23.32], [69.97, 23.47], [69.75, 24.0]]]]}, "2013-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.96, 23.5], [69.75, 24.0], [69.97, 24.53], [70.5, 24.75], [70.75, 24.65], [71.0, 24.75], [71.53, 24.53], [71.68, 24.18], [72.03, 24.03], [72.25, 23.5], [72.15, 23.25], [72.18, 23.18], [72.53, 23.03], [72.75, 22.5], [72.65, 22.25], [72.75, 22.0], [72.53, 21.47], [72.0, 21.25], [71.47, 21.47], [71.32, 21.82], [71.25, 21.85], [71.0, 21.75], [70.75, 21.85], [70.5, 21.75], [69.97, 21.97], [69.75, 22.5], [69.85, 22.75], [69.75, 23.0], [69.96, 23.5]]]]}, "2013-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.96, 23.5], [69.75, 24.0], [69.97, 24.53], [70.5, 24.75], [70.75, 24.65], [71.0, 24.75], [71.53, 24.53], [71.68, 24.18], [72.03, 24.03], [72.25, 23.5], [72.15, 23.25], [72.18, 23.18], [72.53, 23.03], [72.75, 22.5], [72.65, 22.25], [72.75, 22.0], [72.53, 21.47], [72.0, 21.25], [71.47, 21.47], [71.32, 21.82], [71.25, 21.85], [71.0, 21.75], [70.75, 21.85], [70.5, 21.75], [69.97, 21.97], [69.75, 22.5], [69.85, 22.75], [69.75, 23.0], [69.96, 23.5]]]]}, "2013-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.96, 23.5], [69.75, 24.0], [69.97, 24.53], [70.5, 24.75], [70.75, 24.65], [71.0, 24.75], [71.53, 24.53], [71.68, 24.18], [72.03, 24.03], [72.25, 23.5], [72.15, 23.25], [72.25, 23.0], [72.15, 22.75], [72.25, 22.5], [72.03, 21.97], [71.5, 21.75], [71.25, 21.85], [71.0, 21.75], [70.75, 21.85], [70.5, 21.75], [69.97, 21.97], [69.75, 22.5], [69.85, 22.75], [69.75, 23.0], [69.96, 23.5]]]]}, "2013-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.97, 24.53], [70.5, 24.75], [70.75, 24.65], [71.0, 24.75], [71.53, 24.53], [71.68, 24.18], [72.03, 24.03], [72.25, 23.5], [72.03, 22.97], [71.5, 22.75], [71.25, 22.85], [71.18, 22.82], [71.03, 22.47], [70.5, 22.25], [69.97, 22.47], [69.75, 23.0], [69.96, 23.5], [69.75, 24.0], [69.97, 24.53]]]]}, "2013-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.47, 24.53], [71.0, 24.75], [71.3, 24.63], [71.47, 25.03], [72.0, 25.25], [72.53, 25.03], [72.75, 24.5], [72.53, 23.97], [72.13, 23.8], [72.25, 23.5], [72.03, 22.97], [71.5, 22.75], [71.25, 22.85], [71.0, 22.75], [70.47, 22.97], [70.25, 23.5], [70.35, 23.75], [70.25, 24.0], [70.47, 24.53]]]]}, "2013-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.46, 23.0], [70.25, 23.5], [70.47, 24.03], [71.0, 24.25], [71.25, 24.15], [71.32, 24.18], [71.35, 24.25], [71.25, 24.5], [71.47, 25.03], [72.0, 25.25], [72.53, 25.03], [72.7, 24.63], [73.0, 24.75], [73.53, 24.53], [73.75, 24.0], [73.53, 23.47], [73.0, 23.25], [72.5, 23.46], [72.18, 23.32], [72.15, 23.25], [72.25, 23.0], [72.04, 22.5], [72.25, 22.0], [72.03, 21.47], [71.5, 21.25], [71.25, 21.35], [71.0, 21.25], [70.47, 21.47], [70.25, 22.0], [70.35, 22.25], [70.25, 22.5], [70.46, 23.0]]]]}, "2013-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.47, 21.47], [69.25, 22.0], [69.47, 22.53], [70.0, 22.75], [70.3, 22.63], [70.46, 23.0], [70.25, 23.5], [70.47, 24.03], [71.0, 24.25], [71.25, 24.15], [71.32, 24.18], [71.35, 24.25], [71.25, 24.5], [71.47, 25.03], [72.0, 25.25], [72.53, 25.03], [72.7, 24.63], [73.0, 24.75], [73.25, 24.65], [73.5, 24.75], [74.03, 24.53], [74.25, 24.0], [74.15, 23.75], [74.25, 23.5], [74.03, 22.97], [73.63, 22.8], [73.75, 22.5], [73.53, 21.97], [73.0, 21.75], [72.57, 21.93], [72.75, 21.5], [72.53, 20.97], [72.0, 20.75], [71.5, 20.96], [71.0, 20.75], [70.47, 20.97], [70.3, 21.38], [70.0, 21.25], [69.47, 21.47]], [[72.7, 23.38], [72.57, 23.07], [72.88, 23.2], [72.82, 23.32], [72.7, 23.38]], [[72.04, 22.5], [72.18, 22.18], [72.43, 22.07], [72.25, 22.5], [72.43, 22.93], [72.18, 22.82], [72.04, 22.5]]]]}, "2013-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 21.5], [68.97, 22.03], [69.32, 22.18], [69.47, 22.53], [70.0, 22.75], [70.25, 22.65], [70.32, 22.68], [70.46, 23.0], [70.25, 23.5], [70.47, 24.03], [71.0, 24.25], [71.25, 24.15], [71.32, 24.18], [71.35, 24.25], [71.25, 24.5], [71.47, 25.03], [72.0, 25.25], [72.53, 25.03], [72.7, 24.63], [73.0, 24.75], [73.25, 24.65], [73.5, 24.75], [74.03, 24.53], [74.25, 24.0], [74.15, 23.75], [74.25, 23.5], [74.03, 22.97], [73.68, 22.82], [73.65, 22.75], [73.75, 22.5], [73.53, 21.97], [73.0, 21.75], [72.57, 21.93], [72.75, 21.5], [72.53, 20.97], [72.0, 20.75], [71.5, 20.96], [71.0, 20.75], [70.7, 20.88], [70.53, 20.47], [70.0, 20.25], [69.47, 20.47], [69.32, 20.82], [68.97, 20.97], [68.75, 21.5]], [[72.18, 22.18], [72.43, 22.07], [72.32, 22.32], [72.07, 22.43], [72.18, 22.18]]]]}, "2013-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 21.5], [68.97, 22.03], [69.32, 22.18], [69.47, 22.53], [70.0, 22.75], [70.25, 22.65], [70.32, 22.68], [70.46, 23.0], [70.25, 23.5], [70.47, 24.03], [71.0, 24.25], [71.43, 24.07], [71.25, 24.5], [71.47, 25.03], [72.0, 25.25], [72.53, 25.03], [72.7, 24.63], [73.0, 24.75], [73.25, 24.65], [73.5, 24.75], [74.03, 24.53], [74.25, 24.0], [74.15, 23.75], [74.25, 23.5], [74.03, 22.97], [73.68, 22.82], [73.65, 22.75], [73.75, 22.5], [73.53, 21.97], [73.0, 21.75], [72.57, 21.93], [72.75, 21.5], [72.53, 20.97], [72.0, 20.75], [71.5, 20.96], [71.0, 20.75], [70.7, 20.88], [70.53, 20.47], [70.0, 20.25], [69.47, 20.47], [69.32, 20.82], [68.97, 20.97], [68.75, 21.5]], [[72.18, 22.18], [72.43, 22.07], [72.32, 22.32], [72.07, 22.43], [72.18, 22.18]], [[71.93, 22.57], [71.82, 22.82], [71.57, 22.93], [71.68, 22.68], [71.93, 22.57]]]]}, "2013-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 21.5], [68.97, 22.03], [69.32, 22.18], [69.47, 22.53], [70.0, 22.75], [70.25, 22.65], [70.32, 22.68], [70.47, 23.03], [71.0, 23.25], [71.53, 23.03], [71.68, 22.68], [71.93, 22.57], [71.75, 23.0], [71.97, 23.53], [72.5, 23.75], [72.75, 23.65], [72.82, 23.68], [72.97, 24.03], [73.5, 24.25], [74.03, 24.03], [74.25, 23.5], [74.03, 22.97], [73.68, 22.82], [73.53, 22.47], [73.0, 22.25], [72.75, 22.35], [72.5, 22.25], [72.07, 22.43], [72.18, 22.18], [72.53, 22.03], [72.75, 21.5], [72.53, 20.97], [72.0, 20.75], [71.47, 20.97], [71.32, 21.32], [71.25, 21.35], [71.0, 21.25], [70.75, 21.35], [70.63, 21.3], [70.75, 21.0], [70.53, 20.47], [70.0, 20.25], [69.47, 20.47], [69.32, 20.82], [68.97, 20.97], [68.75, 21.5]]]]}, "2013-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.5, 22.75], [72.03, 22.53], [72.25, 22.0], [72.03, 21.47], [71.5, 21.25], [70.97, 21.47], [70.75, 22.0], [70.97, 22.53], [71.5, 22.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.171705012050438}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9912354627362798}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.675759306339103, 27.012322702052188, 26.678006161712403, 26.61790391162168, 26.641785741906574, 26.79843146020528, 26.057539164331615, 25.593811269481648, 25.01652409245338, 24.99447669422409, 24.86902696226224, 25.38892878907592, 25.807199321526753]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.28884587787178, 26.394755166371, 25.9169048848878, 25.66035149184819, 26.034497792136108, 26.103372620306345, 24.63007807976669, 23.767896285556787, 23.020244712337387, 22.57238026607621, 22.502009707407808, 23.927257825257243, 25.807199321526753]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.095712487202576, -2.23514344434993, -2.2857104025293467, -2.236223371065028, -1.9617946092382113, -2.185754246254123, -2.074185788499122, -1.6149422600067471, -1.951001812417548, -1.9562034999934266, -1.9362617757839315, -1.6486882683247885, -1.662116599774322]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.440124265317877, -2.735803536514254, -3.171705012050438, -2.7005071025859024, -2.862649061271213, -2.702401114597933, -2.4539097573351683, -2.2064209902958396, -2.561517683193756, -2.6338278959050854, -2.4371228753102514, -2.0395000235165526, -1.662116599774322]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.514156948563719, -1.666540507985761, -1.7688184644908336, -1.7794676658222082, -1.6162642531617402, -1.6401869232674389, -1.5761563539179815, -1.4462829315106853, -1.717687437955448, -1.7562532972590437, -1.7578223967404096, -1.524274763957512, -1.5088227113968313]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6300550915300334, -1.9251540123305266, -2.1876785098547185, -2.130927255265106, -2.0449150205467523, -1.9053136093089111, -1.692449643873538, -1.6880026876891314, -2.0691240643731548, -2.229576313103878, -2.2453132847414907, -1.6666272568596152, -1.5088227113968313]}}