{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:25:17.023437", "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-Jun-20_to_2021-Jun-22_98.5_2.0"}, "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": 2021060000915}, "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": "June 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 22 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": 80289.77428411848}, "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": ["Indian Ocean"]}, "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": 2.0}, "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": 98.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "98.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 95.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[94.97, 4.53], [95.5, 4.75], [95.75, 4.646], [96.0, 4.75], [96.53, 4.53], [96.677, 4.177], [97.03, 4.03], [97.177, 3.677], [97.25, 3.646], [97.5, 3.75], [97.75, 3.646], [98.0, 3.75], [98.53, 3.53], [98.677, 3.177], [98.75, 3.146], [99.0, 3.25], [99.53, 3.03], [99.75, 2.5], [99.646, 2.25], [99.75, 2.0], [99.53, 1.47], [99.177, 1.323], [99.146, 1.25], [99.177, 1.177], [99.53, 1.03], [99.677, 0.677], [100.03, 0.53], [100.177, 0.177], [100.53, 0.03], [100.75, -0.5], [100.53, -1.03], [100.0, -1.25], [99.47, -1.03], [99.323, -0.677], [98.97, -0.53], [98.823, -0.177], [98.47, -0.03], [98.323, 0.323], [98.25, 0.354], [98.0, 0.25], [97.47, 0.47], [97.323, 0.823], [96.97, 0.97], [96.75, 1.5], [96.875, 1.802], [96.47, 1.97], [96.323, 2.323], [96.25, 2.354], [96.0, 2.25], [95.47, 2.47], [95.323, 2.823], [94.97, 2.97], [94.75, 3.5], [94.854, 3.75], [94.75, 4.0], [94.97, 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": {"2021-06-20T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 3.75], [94.75, 4.0], [94.96966991411009, 4.5303300858899105], [95.5, 4.75], [95.75, 4.646446609406727], [96.0, 4.75], [96.53033008588991, 4.5303300858899105], [96.67677669529664, 4.1767766952966365], [97.03033008588991, 4.0303300858899105], [97.17677669529664, 3.676776695296637], [97.25, 3.646446609406727], [97.5, 3.75], [97.75, 3.646446609406727], [98.0, 3.75], [98.53033008588991, 3.5303300858899105], [98.67677669529664, 3.176776695296637], [98.75, 3.146446609406727], [99.0, 3.25], [99.53033008588991, 3.0303300858899105], [99.75, 2.5], [99.64644660940672, 2.25], [99.75, 2.0], [99.53033008588991, 1.4696699141100895], [99.17677669529664, 1.3232233047033632], [99.14644660940672, 1.25], [99.17677669529664, 1.176776695296637], [99.53033008588991, 1.0303300858899107], [99.67677669529664, 0.6767766952966369], [100.03033008588991, 0.5303300858899107], [100.17677669529664, 0.1767766952966369], [100.53033008588991, 0.030330085889910707], [100.75, -0.5], [100.53033008588991, -1.0303300858899105], [100.0, -1.25], [99.46966991411009, -1.0303300858899107], [99.32322330470336, -0.6767766952966369], [98.96966991411009, -0.5303300858899107], [98.82322330470336, -0.1767766952966369], [98.46966991411009, -0.030330085889910707], [98.32322330470336, 0.3232233047033631], [98.25, 0.3535533905932729], [98.0, 0.25], [97.46966991411009, 0.4696699141100893], [97.32322330470336, 0.8232233047033631], [96.96966991411009, 0.9696699141100893], [96.75, 1.5], [96.875, 1.8017766952966374], [96.46966991411009, 1.9696699141100893], [96.32322330470336, 2.323223304703363], [96.25, 2.353553390593273], [96.0, 2.25], [95.46966991411009, 2.4696699141100895], [95.32322330470336, 2.823223304703363], [94.96966991411009, 2.9696699141100895], [94.75, 3.5], [94.85355339059328, 3.75]]]}, "2021-06-21T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 3.75], [94.75, 4.0], [94.96966991411009, 4.5303300858899105], [95.5, 4.75], [95.75, 4.646446609406727], [96.0, 4.75], [96.53033008588991, 4.5303300858899105], [96.67677669529664, 4.1767766952966365], [97.03033008588991, 4.0303300858899105], [97.17677669529664, 3.676776695296637], [97.25, 3.646446609406727], [97.5, 3.75], [97.75, 3.646446609406727], [98.0, 3.75], [98.53033008588991, 3.5303300858899105], [98.67677669529664, 3.176776695296637], [98.75, 3.146446609406727], [99.0, 3.25], [99.53033008588991, 3.0303300858899105], [99.75, 2.5], [99.64644660940672, 2.25], [99.75, 2.0], [99.53033008588991, 1.4696699141100895], [99.17677669529664, 1.3232233047033632], [99.14644660940672, 1.25], [99.17677669529664, 1.176776695296637], [99.53033008588991, 1.0303300858899107], [99.67677669529664, 0.6767766952966369], [100.03033008588991, 0.5303300858899107], [100.17677669529664, 0.1767766952966369], [100.53033008588991, 0.030330085889910707], [100.75, -0.5], [100.53033008588991, -1.0303300858899105], [100.0, -1.25], [99.46966991411009, -1.0303300858899107], [99.32322330470336, -0.6767766952966369], [98.96966991411009, -0.5303300858899107], [98.82322330470336, -0.1767766952966369], [98.46966991411009, -0.030330085889910707], [98.32322330470336, 0.3232233047033631], [98.25, 0.3535533905932729], [98.0, 0.25], [97.46966991411009, 0.4696699141100893], [97.32322330470336, 0.8232233047033631], [96.96966991411009, 0.9696699141100893], [96.75, 1.5], [96.875, 1.8017766952966374], [96.46966991411009, 1.9696699141100893], [96.32322330470336, 2.323223304703363], [96.25, 2.353553390593273], [96.0, 2.25], [95.46966991411009, 2.4696699141100895], [95.32322330470336, 2.823223304703363], [94.96966991411009, 2.9696699141100895], [94.75, 3.5], [94.85355339059328, 3.75]]]}, "2021-06-22T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 3.75], [94.75, 4.0], [94.96966991411009, 4.5303300858899105], [95.5, 4.75], [95.75, 4.646446609406727], [96.0, 4.75], [96.53033008588991, 4.5303300858899105], [96.67677669529664, 4.1767766952966365], [97.03033008588991, 4.0303300858899105], [97.17677669529664, 3.676776695296637], [97.25, 3.646446609406727], [97.5, 3.75], [97.75, 3.646446609406727], [98.0, 3.75], [98.53033008588991, 3.5303300858899105], [98.67677669529664, 3.176776695296637], [98.75, 3.146446609406727], [99.0, 3.25], [99.53033008588991, 3.0303300858899105], [99.75, 2.5], [99.64644660940672, 2.25], [99.75, 2.0], [99.53033008588991, 1.4696699141100895], [99.17677669529664, 1.3232233047033632], [99.14644660940672, 1.25], [99.17677669529664, 1.176776695296637], [99.53033008588991, 1.0303300858899107], [99.67677669529664, 0.6767766952966369], [100.03033008588991, 0.5303300858899107], [100.17677669529664, 0.1767766952966369], [100.53033008588991, 0.030330085889910707], [100.75, -0.5], [100.53033008588991, -1.0303300858899105], [100.0, -1.25], [99.46966991411009, -1.0303300858899107], [99.32322330470336, -0.6767766952966369], [98.96966991411009, -0.5303300858899107], [98.82322330470336, -0.1767766952966369], [98.46966991411009, -0.030330085889910707], [98.32322330470336, 0.3232233047033631], [98.25, 0.3535533905932729], [98.0, 0.25], [97.46966991411009, 0.4696699141100893], [97.32322330470336, 0.8232233047033631], [96.96966991411009, 0.9696699141100893], [96.75, 1.5], [96.875, 1.8017766952966374], [96.46966991411009, 1.9696699141100893], [96.32322330470336, 2.323223304703363], [96.25, 2.353553390593273], [96.0, 2.25], [95.46966991411009, 2.4696699141100895], [95.32322330470336, 2.823223304703363], [94.96966991411009, 2.9696699141100895], [94.75, 3.5], [94.85355339059328, 3.75]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4010798102466993}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5453503643757336}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.121703075533617, 25.00452136885508, 24.78804698997544]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.959878749285792, 19.935724453312957, 18.8732503674633]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3819026236313094, -1.5215940665628342, -1.732554402933057]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.108501570897431, -2.112658452991525, -2.4010798102466993]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.932931670110262, -2.1490731932404645, -2.4622371685618316]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.8923881959649846, -2.9128029987872313, -3.6142029990229556]}}