Global Atmospheric Real-Time Analysis Product (ART)

Global Atmospheric Real-Time Analysis Product (ART) is a three-dimensional atmospheric real-time product covering the globe,  generated by the China Meteorological Administration (CMA) using a four-dimensional ensemble variational assimilation method. It assimilates real-time collected conventional observations specific to the Chinese region and four major categories of 14 subcategories of conventional observations from global surface, upper-air, marine, aircraft reports, as well as satellite vertical detection radiance, infrared hyperspectral, occultation observations, atmospheric motion vectors, and ocean surface wind data. Upon verification and evaluation, the overall quality of this product is comparable to that of similar international products, with significantly better timeliness compared to foreign products.

The ART includes real-time analysis products of global three-dimensional atmospheric temperature, humidity, wind, geopotential height, and other elements. It has a spatial resolution of 10km×10km, covering the entire globe, with a temporal resolution of 1 hour, and the product format is GRIB2.