Research Article
Estimating Annual CO2 Flux for Lutjewad Station Using Three Different Gap-Filling Techniques
Table 1
Input variables used for gap filling.
| | No. | Input variables | Unit | Instrument/note | Height |
| | (1) | CO2 flux | μmol m−2 s−1 | Licor LI-7500 open path CO2-H2O sensor combined with a Gill Windmaster Pro 3D sonic anemometer | 50 meters |
| | (2) | Global radiation | Wm−2 | Kipp CMA pyranometer | 2 meters |
| | (3) | Wind velocity | ms−1 | Three-dimensional sonic anemometer-thermometer | 40 meters |
| | (4) | Relative humidity | % | Campbell HMP45C | 40 meters |
| | (5) | Air temperature |
°C | PT-100 resistors | 40 meters |
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