Using OCO-2 Satellite Data for Investigating the Variability of Atmospheric CO2 Concentration in Relationship with Precipitation, Relative Humidity, and Vegetation over Oman
| Autor: | Ghazi Al-Rawas, Foroogh Golkar, Malik Al-Wardy, Kathiya Al-Aufi, Seyedeh Fatemeh Saffari |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:Hydraulic engineering
010504 meteorology & atmospheric sciences NDVI Geography Planning and Development OCO-2 satellite 010501 environmental sciences Aquatic Science precipitation Atmospheric sciences Monsoon relative humidity 01 natural sciences Biochemistry Normalized Difference Vegetation Index chemistry.chemical_compound lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Relative humidity Precipitation Time series 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 Vegetation chemistry Carbon dioxide CO2 concentration Environmental science Satellite |
| Zdroj: | Water Volume 12 Issue 1 Water, Vol 12, Iss 1, p 101 (2019) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12010101 |
| Popis: | Recognition of the carbon dioxide (CO2) concentration variations over time is critical for tracing the future changes in climate both globally and regionally. In this study, a time series analysis of atmospheric CO2 concentration and its relationship with precipitation, relative humidity (RH), and vegetation is investigated over Oman. The daily XCO2 data from OCO-2 satellite was obtained from September 2014 to March 2019. The daily RH and precipitation data were also collected from the ground weather stations, and the Normalized Difference Vegetation Index was obtained from MODIS. Oman was studied in four distinct regions where the main emphasis was on the Monsoon Region in the far south. The CO2 concentration time series indicated a significant upward trend over different regions for the study period, with annual cycles being the same for all regions except the Monsoon Region. This is indicative of RH, precipitation, and consequently vegetation cover impact on atmospheric CO2 concentration, resulting in an overall lower annual growth in the Monsoon Region. Simple and multiple correlation analyses of CO2 concentration with mentioned parameters were performed in zero to three-month lags over Oman. They showed high correlations mainly during the rainfall period in the Monsoon Region. |
| Databáze: | OpenAIRE |
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