2020
DOI: 10.1080/01431161.2020.1788743
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Spatial and temporal distribution and seasonal prediction of satellite measurement of CO2 concentration over Iran

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Cited by 9 publications
(5 citation statements)
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“…However, even steeper trends have been measured such as an OCO-2 trend of 2.8 ppmv/year over India from July 2014 to December 2018 (Kunchala et al, 2022), and a GOSAT-derived trend of 2.6 ± 0.3 ppmv/year over the Arctic Ocean for July-September 2009-2016 (Payan et al, 2017). The trend reported here for the UAE is steeper than the 1.92 to 2.16 ppmv/year estimated over Iran for May 2009 -June 2016 using GOSAT data (Golkar and Shirvani, 2020), and the 2.1 ppmv/year for the same region using GOSAT and Environmental Satellite (ENVISAT) data for the period 2003-2015 (Safaeian et al, 2023). The fact that the period over which the trend is computed in this study (namely, 2015-2022) includes more recent years when the rise in the CO 2 concentration has become steeper (Tans and Keeling, 2023), and the biases in the satellite-derived estimates which, as noted by Kuttippurath et al (2022), can be substantial, may explain the higher trend magnitude compared to that reported elsewhere.…”
Section: Trends In Co 2 Concentrationcontrasting
confidence: 48%
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“…However, even steeper trends have been measured such as an OCO-2 trend of 2.8 ppmv/year over India from July 2014 to December 2018 (Kunchala et al, 2022), and a GOSAT-derived trend of 2.6 ± 0.3 ppmv/year over the Arctic Ocean for July-September 2009-2016 (Payan et al, 2017). The trend reported here for the UAE is steeper than the 1.92 to 2.16 ppmv/year estimated over Iran for May 2009 -June 2016 using GOSAT data (Golkar and Shirvani, 2020), and the 2.1 ppmv/year for the same region using GOSAT and Environmental Satellite (ENVISAT) data for the period 2003-2015 (Safaeian et al, 2023). The fact that the period over which the trend is computed in this study (namely, 2015-2022) includes more recent years when the rise in the CO 2 concentration has become steeper (Tans and Keeling, 2023), and the biases in the satellite-derived estimates which, as noted by Kuttippurath et al (2022), can be substantial, may explain the higher trend magnitude compared to that reported elsewhere.…”
Section: Trends In Co 2 Concentrationcontrasting
confidence: 48%
“…A comparison with an anthropogenic CO 2 emission inventory indicated anthropogenic sources play an important role in the spatial distribution of the XCO 2 concentration, in particular in arid and semi-arid regions largely devoid of vegetation. The trend in the XCO 2 values over the UAE for 2015-2022 is estimated to be 2.50 ± 0.4 ppmv/year, slightly higher than that reported at other sites in the Middle East (e.g., Golkar and Shirvani, 2020) but slightly lower than that estimated over India in the recent years (Kunchala et al, 2022). This has been attributed to biases in the satellite-derived estimates (Kuttippurath et al, 2022) and to the fact that more recent years have been considered in the analysis, when the CO 2 concentration has increased at a faster rate.…”
Section: Discussionmentioning
confidence: 53%
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“…Carbon uptake through the photosynthesis process by a terrestrial ecosystem termed gross primary productivity (GPP) [1,2] is the way CO 2 enters into the biosphere from the atmosphere [3,4]. GPP not only drives the ecosystem functioning but also takes part in terrestrial carbon sequestration through phenological and physiological processes [5].…”
Section: Introductionmentioning
confidence: 99%