Zobrazeno 1 - 10
of 269
pro vyhledávání: '"George P. Petropoulos"'
Publikováno v:
Earth, Vol 5, Iss 2, Pp 244-254 (2024)
Land use/land cover (LULC) is a fundamental concept of the Earth’s system intimately connected to many phases of the human and physical environment. LULC mappings has been recently revolutionized by the use of high-resolution imagery from unmanned
Externí odkaz:
https://doaj.org/article/231716e3e1fa4fcabf2348e067982d7e
Publikováno v:
GeoHazards, Vol 5, Iss 2, Pp 485-503 (2024)
Sentinel-2 data are crucial in mapping flooded areas as they provide high spatial and spectral resolution but under cloud-free weather conditions. In the present study, we aimed to devise a method for mapping a flooded area using multispectral Sentin
Externí odkaz:
https://doaj.org/article/cebcb21175464339a28e232743adc40a
Autor:
Bingli Wang, Wei Cheng, Yansong Bao, Shudong Wang, George P. Petropoulos, Shuiyong Fan, Jiajia Mao, Ziqi Jin, Zihui Yang
Publikováno v:
Remote Sensing, Vol 16, Iss 14, p 2682 (2024)
This study investigates the impacts of the joint assimilation of ground-based microwave radiometer (MWR) and FY-3D microwave sounder (MWTS-2/MWHS-2) observations on the analyses and forecasts for precipitation forecast. Based on the weather research
Externí odkaz:
https://doaj.org/article/de41d73c4e1a45aea57d80129ee11d50
Autor:
Vikas Dugesar, Manish K Pandey, Prashant K Srivastava, George P. Petropoulos, Sanjeev Kumar Srivastava, Virendra Kumar Kumra
Publikováno v:
Geocarto International, Vol 0, Iss 0, Pp 1-39 (2023)
The present study evaluates the accuracy of SNAP- Sentinel-2 Prototype Processor (SL2P) derived Leaf Area Index (LAI) and proposes a new simple method to generate new datasets of LAI through data fusion. Rigorous optimization of the data fusion appro
Externí odkaz:
https://doaj.org/article/1028c20171d446c684ebabb623da390c
Publikováno v:
Drones, Vol 8, Iss 7, p 290 (2024)
Knowledge on the spatiotemporal patterns of surface energy balance parameters is crucial for understanding climate system processes. To this end, the assimilation of Earth Observation data with land biosphere models has shown promising results, but t
Externí odkaz:
https://doaj.org/article/2d89efff0d854332b52e87a9a6c77f50
Publikováno v:
Land, Vol 13, Iss 6, p 776 (2024)
Climate change is increasingly affecting components of the terrestrial cryosphere with its adverse impacts in the Arctic regions of our planet are already well documented. In this context, it is regarded today as a key scientific priority to develop
Externí odkaz:
https://doaj.org/article/bc0275190ddb47d4810ddf4cb7fd83be
Autor:
George P. Petropoulos, Christina Lekka
Publikováno v:
Sensors, Vol 24, Iss 10, p 3024 (2024)
Soil–Vegetation–Atmosphere Transfer (SVAT) models are a promising avenue towards gaining a better insight into land surface interactions and Earth’s system dynamics. One such model developed for the academic and research community is the SimSph
Externí odkaz:
https://doaj.org/article/089afc41f26940d49cdacb5b520f6105
Publikováno v:
Remote Sensing, Vol 16, Iss 7, p 1267 (2024)
Precipitation is the basic component of the Earth’s water cycle. Obtaining high-resolution and high-precision precipitation data is of great significance. This paper establishes a precipitation retrieval model based on a random forest classificatio
Externí odkaz:
https://doaj.org/article/24e46debd5f4466390cad97aca97b155
Autor:
Loukas Kouvaras, George P. Petropoulos
Publikováno v:
Drones, Vol 8, Iss 2, p 43 (2024)
The present study proposes a technique for automated tree crown detection and segmentation in digital images derived from unmanned aerial vehicles (UAVs) using a machine learning (ML) algorithm named Detectron2. The technique, which was developed in
Externí odkaz:
https://doaj.org/article/d6143da4efdb4d8596387c6ad5cdcaad
Autor:
Nitesh Awasthi, Jayant Nath Tripathi, George P. Petropoulos, Pradeep Kumar, Abhay Kumar Singh, Kailas Kamaji Dakhore, Kripan Ghosh, Dileep Kumar Gupta, Prashant K. Srivastava, Kleomenis Kalogeropoulos, Sartajvir Singh, Dhiraj Kumar Singh
Publikováno v:
Hydrology, Vol 11, Iss 2, p 27 (2024)
This study involved an investigation of the long-term seasonal rainfall patterns in central India at the district level during the period from 1991 to 2020, including various aspects such as the spatiotemporal seasonal trend of rainfall patterns, rai
Externí odkaz:
https://doaj.org/article/24e6e7976c234cfe84fb2e44d2ea1422