{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:19.181729", "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-Sep-01_to_2021-Sep-05_118.0_-2.5"}, "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": 2021090000066}, "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": "September 01 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 05 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": 74105.7344593351}, "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": ["Indonesia"]}, "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": ["Makassar Basin"]}, "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": -2.5}, "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": 118.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "118.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 116.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 119.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[118.53, -4.53], [118.0, -4.75], [117.47, -4.53], [117.32, -4.18], [117.25, -4.15], [117.0, -4.25], [116.75, -4.15], [116.5, -4.25], [115.97, -4.03], [115.75, -3.5], [115.85, -3.25], [115.75, -3.0], [115.85, -2.75], [115.75, -2.5], [115.97, -1.97], [116.32, -1.82], [116.35, -1.75], [116.25, -1.5], [116.47, -0.97], [117.0, -0.75], [117.25, -0.85], [117.5, -0.75], [118.0, -0.96], [118.5, -0.75], [118.75, -0.85], [119.0, -0.75], [119.53, -0.97], [119.75, -1.5], [119.65, -1.75], [119.75, -2.0], [119.53, -2.53], [119.18, -2.68], [119.15, -2.75], [119.25, -3.0], [119.03, -3.53], [118.68, -3.68], [118.65, -3.75], [118.75, -4.0], [118.53, -4.53]]]]}}, "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": {"2021-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.75, -1.5], [116.97, -0.97], [117.5, -0.75], [118.0, -0.96], [118.5, -0.75], [118.75, -0.85], [119.0, -0.75], [119.53, -0.97], [119.75, -1.5], [119.65, -1.75], [119.75, -2.0], [119.53, -2.53], [119.18, -2.68], [119.15, -2.75], [119.25, -3.0], [119.03, -3.53], [118.5, -3.75], [117.97, -3.53], [117.82, -3.18], [117.47, -3.03], [117.32, -2.68], [116.97, -2.53], [116.75, -2.0], [116.85, -1.75], [116.75, -1.5]]]]}, "2021-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.75, -3.0], [115.85, -2.75], [115.75, -2.5], [115.97, -1.97], [116.32, -1.82], [116.35, -1.75], [116.25, -1.5], [116.47, -0.97], [117.0, -0.75], [117.25, -0.85], [117.5, -0.75], [118.0, -0.96], [118.5, -0.75], [118.75, -0.85], [119.0, -0.75], [119.53, -0.97], [119.75, -1.5], [119.65, -1.75], [119.75, -2.0], [119.53, -2.53], [119.18, -2.68], [119.15, -2.75], [119.25, -3.0], [119.03, -3.53], [118.68, -3.68], [118.65, -3.75], [118.75, -4.0], [118.53, -4.53], [118.0, -4.75], [117.47, -4.53], [117.32, -4.18], [117.25, -4.15], [117.0, -4.25], [116.75, -4.15], [116.5, -4.25], [115.97, -4.03], [115.75, -3.5], [115.85, -3.25], [115.75, -3.0]]]]}, "2021-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.75, -3.0], [115.85, -2.75], [115.75, -2.5], [115.97, -1.97], [116.32, -1.82], [116.35, -1.75], [116.25, -1.5], [116.47, -0.97], [117.0, -0.75], [117.25, -0.85], [117.5, -0.75], [118.0, -0.96], [118.5, -0.75], [118.75, -0.85], [119.0, -0.75], [119.53, -0.97], [119.75, -1.5], [119.65, -1.75], [119.75, -2.0], [119.53, -2.53], [119.18, -2.68], [119.15, -2.75], [119.25, -3.0], [119.03, -3.53], [118.68, -3.68], [118.65, -3.75], [118.75, -4.0], [118.53, -4.53], [118.0, -4.75], [117.47, -4.53], [117.32, -4.18], [117.25, -4.15], [117.0, -4.25], [116.75, -4.15], [116.5, -4.25], [115.97, -4.03], [115.75, -3.5], [115.85, -3.25], [115.75, -3.0]]]]}, "2021-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.75, -3.0], [115.85, -2.75], [115.75, -2.5], [115.97, -1.97], [116.32, -1.82], [116.35, -1.75], [116.25, -1.5], [116.47, -0.97], [117.0, -0.75], [117.53, -0.97], [117.68, -1.32], [117.75, -1.35], [118.0, -1.25], [118.53, -1.47], [118.68, -1.82], [119.03, -1.97], [119.25, -2.5], [119.15, -2.75], [119.25, -3.0], [119.03, -3.53], [118.68, -3.68], [118.65, -3.75], [118.75, -4.0], [118.53, -4.53], [118.0, -4.75], [117.47, -4.53], [117.32, -4.18], [117.25, -4.15], [117.0, -4.25], [116.75, -4.15], [116.5, -4.25], [115.97, -4.03], [115.75, -3.5], [115.85, -3.25], [115.75, -3.0]]]]}, "2021-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.47, -3.47], [118.0, -3.25], [118.53, -3.47], [118.75, -4.0], [118.53, -4.53], [118.0, -4.75], [117.47, -4.53], [117.25, -4.0], [117.47, -3.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.332305661254395}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0125583686068949}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.227166046833645, 26.066460956856645, 25.898167737435983, 26.184335110222037, 26.7597604879698]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.03344204023159, 25.80712712190183, 25.541803172744096, 25.67477784496492, 26.7597604879698]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8703170612804627, -1.0045407363188446, -1.1777013697264611, -0.9102739135828833, -0.6073672353710435]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0648146822468902, -1.1992637566241342, -1.332305661254395, -1.2744713677026311, -0.6073672353710435]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6370895346601173, -1.9932532328736785, -2.3561780047657854, -1.94372156617647, -1.3298308251623256]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9019596245901045, -2.4266839193461838, -2.7126172402011846, -2.5456612266809686, -1.3298308251623256]}}