{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:12:53.128377", "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": "2021-Aug-25_to_2021-Aug-29_102.0_12.5"}, "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": 2021080001103}, "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": "August 25 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 29 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 54020.57303624171}, "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": ["Thailand"]}, "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": 12.5}, "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": 102.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "102.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 100.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 102.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[102.75, 12.5], [102.53, 11.97], [102.0, 11.75], [101.47, 11.97], [101.32, 12.32], [101.25, 12.35], [101.0, 12.25], [100.75, 12.35], [100.5, 12.25], [99.97, 12.47], [99.75, 13.0], [99.85, 13.25], [99.75, 13.5], [99.97, 14.03], [100.32, 14.18], [100.35, 14.25], [100.32, 14.32], [99.97, 14.47], [99.75, 15.0], [99.85, 15.25], [99.75, 15.5], [99.97, 16.03], [100.5, 16.25], [101.03, 16.03], [101.25, 15.5], [101.15, 15.25], [101.18, 15.18], [101.25, 15.15], [101.5, 15.25], [101.75, 15.15], [102.0, 15.25], [102.25, 15.15], [102.5, 15.25], [103.03, 15.03], [103.25, 14.5], [103.15, 14.25], [103.25, 14.0], [103.03, 13.47], [102.68, 13.32], [102.65, 13.25], [102.75, 13.0], [102.65, 12.75], [102.75, 12.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.47, 13.03], [102.0, 13.25], [102.53, 13.03], [102.75, 12.5], [102.53, 11.97], [102.0, 11.75], [101.47, 11.97], [101.25, 12.5], [101.47, 13.03]]]]}, "2021-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.75, 15.5], [99.97, 16.03], [100.5, 16.25], [101.03, 16.03], [101.25, 15.5], [101.15, 15.25], [101.18, 15.18], [101.25, 15.15], [101.5, 15.25], [101.75, 15.15], [102.0, 15.25], [102.25, 15.15], [102.5, 15.25], [103.03, 15.03], [103.25, 14.5], [103.15, 14.25], [103.25, 14.0], [103.03, 13.47], [102.68, 13.32], [102.65, 13.25], [102.75, 13.0], [102.65, 12.75], [102.75, 12.5], [102.53, 11.97], [102.0, 11.75], [101.47, 11.97], [101.32, 12.32], [101.25, 12.35], [101.0, 12.25], [100.47, 12.47], [100.32, 12.82], [99.97, 12.97], [99.75, 13.5], [99.97, 14.03], [100.32, 14.18], [100.35, 14.25], [100.32, 14.32], [99.97, 14.47], [99.75, 15.0], [99.85, 15.25], [99.75, 15.5]]]]}, "2021-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.75, 13.5], [99.97, 14.03], [100.32, 14.18], [100.35, 14.25], [100.32, 14.32], [99.97, 14.47], [99.75, 15.0], [99.85, 15.25], [99.75, 15.5], [99.97, 16.03], [100.5, 16.25], [101.03, 16.03], [101.25, 15.5], [101.15, 15.25], [101.18, 15.18], [101.25, 15.15], [101.5, 15.25], [101.75, 15.15], [102.0, 15.25], [102.25, 15.15], [102.5, 15.25], [103.03, 15.03], [103.25, 14.5], [103.15, 14.25], [103.25, 14.0], [103.03, 13.47], [102.68, 13.32], [102.65, 13.25], [102.75, 13.0], [102.65, 12.75], [102.75, 12.5], [102.53, 11.97], [102.0, 11.75], [101.47, 11.97], [101.32, 12.32], [101.25, 12.35], [101.0, 12.25], [100.75, 12.35], [100.5, 12.25], [99.97, 12.47], [99.75, 13.0], [99.85, 13.25], [99.75, 13.5]]]]}, "2021-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.75, 13.5], [99.97, 14.03], [100.32, 14.18], [100.35, 14.25], [100.32, 14.32], [99.97, 14.47], [99.75, 15.0], [99.85, 15.25], [99.75, 15.5], [99.97, 16.03], [100.5, 16.25], [101.03, 16.03], [101.25, 15.5], [101.15, 15.25], [101.18, 15.18], [101.25, 15.15], [101.5, 15.25], [101.75, 15.15], [102.0, 15.25], [102.25, 15.15], [102.5, 15.25], [103.03, 15.03], [103.25, 14.5], [103.15, 14.25], [103.25, 14.0], [103.03, 13.47], [102.68, 13.32], [102.65, 13.25], [102.75, 13.0], [102.65, 12.75], [102.75, 12.5], [102.53, 11.97], [102.0, 11.75], [101.47, 11.97], [101.32, 12.32], [101.25, 12.35], [101.0, 12.25], [100.75, 12.35], [100.5, 12.25], [99.97, 12.47], [99.75, 13.0], [99.85, 13.25], [99.75, 13.5]]]]}, "2021-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.97, 13.53], [100.5, 13.75], [101.03, 13.53], [101.25, 13.0], [101.03, 12.47], [100.5, 12.25], [99.97, 12.47], [99.75, 13.0], [99.97, 13.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.450108590270929}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5965305702391623}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.825654675570433, 25.983483609093184, 25.601929877691077, 26.11510264237694, 27.110776828988662]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.825654675570433, 23.284907933668933, 22.70346354224256, 23.122986710740122, 27.110776828988662]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9734623661125852, -1.5761088842994515, -1.9167953224387746, -1.3629473843048048, -1.0064992425662354]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9734623661125852, -1.9424700272298878, -2.450108590270929, -1.8767771413022842, -1.0064992425662354]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3346081278533177, -1.6144796587659862, -1.9799697386277026, -1.4620904963514239, -2.0096583260126453]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3346081278533177, -1.9995212660463026, -2.3633090470496088, -1.7103440108791466, -2.0096583260126453]}}