Winter crops map was built for the territory of Ukraine with use of optical data from European Space Agency's Sentinel-2 satellite with 10 m spatial resolution.
This important task was solved effectively within jointed pilot project between Space Research Institute NAS Ukraine and SSA Ukraine (SRI NASU-SSAU) and EOS Data Analitics (EOSDA) company.
With use of Land Viewer application, technological solutions of EOSDA, Google Earth Engine and Amazon cloud technologies it became possible to implement high-performance computations
for processing of Big data. For map creation an expertise of scientists from SRI NASU-SSAU in the domain of neural networks and deep learming was used.
According to satellite data the total area under winter crops in Ukraine is 8.54 million hectares. The area under winter grains — 7.62 million hectares, the area under winter rapeseed —
927,81 thousands hectares. This area takes into account the Crimea and the occupied territories of Donetsk and Lugansk regions. Overall Accuracy (OA) of winter crops map for the territory of Ukraine is about 80%.
At the same time according to information of Agravery agency (http://agravery.com/uk/posts/show/ozimogo-zita-ta-ripaku-zberut-bilse)
the total area under winter crops in 2017 in Ukraine is 7,2 million hectares, ant the area under winter rapeseed is 845 thousands hectares.
Quite good coherence of satellite and statistical results can be also observed at the level of separate regions of Ukraine.
For example, in one of the main agrarian regions of Ukraine Mykolaiv region according to satellite data the area under winter crops is 633.15 thousands hectares. The area under winter grains 597,22 thousands hectares,
the area under winter rapeseed is 35.93 thousands hectares (according to the data from regional information portal (http://www.regportal.mk.ua/industrial/98-mukolaiv/2155-posivni-ploshchi-ozymykh-kultur-pid-urozhai-2017-roku)
616.2 thousands hectares and 35.0 thousands hectares respectively).
In Vinnica region according to satellite data the area under winter grains is 360.99 thousands hectares, the area under winter rapeseed is 76.24 thousands hectares (according to the site of Ukrainian national news
361.5 thousands hectares and 76.4 thousands hectares respectively).
In Zaporozhye region according to satellite data the area under winter grains is 679.53 thousands hectares, the area under winter rapeseed is 30.29 thousands hectares
(according to the site «Zaporozhye news» (http://uanews.zp.ua/society/2017/02/01/98986.html) 665,8 thousands hectares and 29.4 thousands hectares respectively).