{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:13:12.916715", "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": "2018-Jul-26_to_2018-Jul-29_104.0_17.5"}, "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": 2018070001135}, "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 26 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 29 2018"}, "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": 61985.797716664456}, "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": ["Laos", "Thailand", "Vietnam"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.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": 17.5}, "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": 104.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "104.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 102.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 107.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.5, 18.75], [103.75, 18.65], [104.0, 18.75], [104.25, 18.65], [104.5, 18.75], [104.75, 18.65], [105.0, 18.75], [105.25, 18.65], [105.5, 18.75], [106.03, 18.53], [106.25, 18.0], [106.15, 17.75], [106.18, 17.68], [106.25, 17.65], [106.5, 17.75], [107.03, 17.53], [107.25, 17.0], [107.03, 16.47], [106.68, 16.32], [106.53, 15.97], [106.18, 15.82], [106.03, 15.47], [105.5, 15.25], [104.97, 15.47], [104.82, 15.82], [104.47, 15.97], [104.32, 16.32], [103.97, 16.47], [103.82, 16.82], [103.75, 16.85], [103.5, 16.75], [103.25, 16.85], [103.0, 16.75], [102.47, 16.97], [102.25, 17.5], [102.47, 18.03], [102.82, 18.18], [102.97, 18.53], [103.5, 18.75]]]]}, "2018-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.5, 18.75], [103.75, 18.65], [104.0, 18.75], [104.25, 18.65], [104.5, 18.75], [104.75, 18.65], [105.0, 18.75], [105.25, 18.65], [105.5, 18.75], [106.03, 18.53], [106.25, 18.0], [106.15, 17.75], [106.18, 17.68], [106.25, 17.65], [106.5, 17.75], [106.75, 17.65], [107.0, 17.75], [107.53, 17.53], [107.75, 17.0], [107.53, 16.47], [107.0, 16.25], [106.75, 16.35], [106.68, 16.32], [106.53, 15.97], [106.18, 15.82], [106.03, 15.47], [105.5, 15.25], [104.97, 15.47], [104.82, 15.82], [104.47, 15.97], [104.32, 16.32], [103.97, 16.47], [103.82, 16.82], [103.75, 16.85], [103.5, 16.75], [103.25, 16.85], [103.0, 16.75], [102.47, 16.97], [102.25, 17.5], [102.47, 18.03], [102.82, 18.18], [102.97, 18.53], [103.5, 18.75]]]]}, "2018-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.5, 18.75], [103.75, 18.65], [104.0, 18.75], [104.25, 18.65], [104.5, 18.75], [104.75, 18.65], [105.0, 18.75], [105.25, 18.65], [105.5, 18.75], [106.03, 18.53], [106.25, 18.0], [106.15, 17.75], [106.18, 17.68], [106.25, 17.65], [106.5, 17.75], [106.75, 17.65], [107.0, 17.75], [107.53, 17.53], [107.75, 17.0], [107.53, 16.47], [107.0, 16.25], [106.75, 16.35], [106.68, 16.32], [106.53, 15.97], [106.18, 15.82], [106.03, 15.47], [105.5, 15.25], [104.97, 15.47], [104.82, 15.82], [104.47, 15.97], [104.32, 16.32], [103.97, 16.47], [103.82, 16.82], [103.75, 16.85], [103.5, 16.75], [103.25, 16.85], [103.0, 16.75], [102.47, 16.97], [102.25, 17.5], [102.47, 18.03], [102.82, 18.18], [102.97, 18.53], [103.5, 18.75]]]]}, "2018-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.53, 17.53], [107.75, 17.0], [107.53, 16.47], [107.0, 16.25], [106.47, 16.47], [106.25, 17.0], [106.47, 17.53], [107.0, 17.75], [107.53, 17.53]]], [[[103.5, 18.75], [103.75, 18.65], [104.0, 18.75], [104.53, 18.53], [104.7, 18.13], [105.0, 18.25], [105.53, 18.03], [105.68, 17.68], [106.03, 17.53], [106.25, 17.0], [106.15, 16.75], [106.25, 16.5], [106.03, 15.97], [105.5, 15.75], [104.97, 15.97], [104.75, 16.5], [104.85, 16.75], [104.82, 16.82], [104.5, 16.96], [104.0, 16.75], [103.75, 16.85], [103.5, 16.75], [102.97, 16.97], [102.75, 17.5], [102.85, 17.75], [102.75, 18.0], [102.97, 18.53], [103.5, 18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7490330847771816}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9724248409420788}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.252766799012875, 24.250583840914885, 24.167896034172827, 25.14905469487701]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.78621784570896, 21.822152877218684, 21.547815530184323, 24.042721548862403]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.926170435458556, -1.9943996200678034, -2.0463820400382353, -1.8362394118184469]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.101622540840026, -2.522441471605589, -2.7490330847771816, -2.299684234242818]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5693702004352201, -1.5908340340544609, -1.618139654975879, -1.4801005018445796]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8112790841625843, -1.8113513960277448, -1.874250720526476, -1.6691453899560922]}}