{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:22:18.233325", "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-Feb-18_to_2021-Feb-20_109.5_-6.5"}, "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": 2021020000669}, "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": "February 18 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 61466.57185686959}, "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": ["Java 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": -6.5}, "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": 109.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "109.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 107.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 110.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[106.75, -6.0], [106.97, -5.47], [107.5, -5.25], [107.75, -5.354], [107.823, -5.323], [107.97, -4.97], [108.5, -4.75], [108.75, -4.854], [109.0, -4.75], [109.25, -4.854], [109.5, -4.75], [109.75, -4.854], [110.0, -4.75], [110.25, -4.854], [110.5, -4.75], [111.03, -4.97], [111.25, -5.5], [111.146, -5.75], [111.25, -6.0], [111.146, -6.25], [111.25, -6.5], [111.03, -7.03], [110.5, -7.25], [110.25, -7.146], [110.0, -7.25], [109.75, -7.146], [109.677, -7.177], [109.53, -7.53], [109.0, -7.75], [108.75, -7.646], [108.5, -7.75], [107.97, -7.53], [107.823, -7.177], [107.47, -7.03], [107.323, -6.677], [106.97, -6.53], [106.75, -6.0]]]}}, "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": {"2021-02-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[107.32322330470336, -6.6767766952966365], [106.96966991411009, -6.5303300858899105], [106.75, -6.0], [106.96966991411009, -5.4696699141100895], [107.5, -5.25], [107.75, 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[107.46966991411009, -7.0303300858899105], [107.32322330470336, -6.6767766952966365]]]}, "2021-02-20T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[107.32322330470336, -6.6767766952966365], [106.96966991411009, -6.5303300858899105], [106.75, -6.0], [106.96966991411009, -5.4696699141100895], [107.5, -5.25], [107.75, -5.353553390593273], [107.82322330470336, -5.3232233047033635], [107.96966991411009, -4.9696699141100895], [108.5, -4.75], [108.75, -4.853553390593273], [109.0, -4.75], [109.25, -4.853553390593273], [109.5, -4.75], [109.75, -4.853553390593273], [110.0, -4.75], [110.25, -4.853553390593273], [110.5, -4.75], [111.03033008588991, -4.9696699141100895], [111.25, -5.5], [111.14644660940672, -5.75], [111.25, -6.0], [111.14644660940672, -6.25], [111.25, -6.5], [111.03033008588991, -7.0303300858899105], [110.5, -7.25], [110.25, -7.146446609406727], [110.0, -7.25], [109.75, -7.146446609406727], [109.67677669529664, -7.1767766952966365], [109.53033008588991, -7.5303300858899105], [109.0, -7.75], [108.75, -7.646446609406727], [108.5, -7.75], [107.96966991411009, -7.5303300858899105], [107.82322330470336, -7.1767766952966365], [107.46966991411009, -7.0303300858899105], [107.32322330470336, -6.6767766952966365]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.5183322032241335}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9522983761756668}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.71897627421083, 25.49564214500242, 25.671415421622726]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.61628123085518, 23.331327840104734, 23.58892145528108]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8677832143325304, -1.0793676633898657, -0.9097442508046043]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.186896295976453, -1.5183322032241335, -1.1898857488038175]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7908864724102536, -2.1571568467069944, -1.7911460679019542]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0230958957682015, -2.632328463641812, -2.2993737628954527]}}