The Concept of DC Gain in Modeling Secular Variations in Atmospheric 14 C
Bibliographic Data
| ID | 9245213 |
|---|---|
| Authors | Gregory Lazear, Paul E Damon, Robert Sternberg (0000-0002-7649-0419) |
| Year | 1980 |
| Volume | 22 |
| Issue | 2 |
| Pages | 318-327 |
| Publication date | 1980-01-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/s0033822200009619 |
| OpenAlex | W2476500885 |
| Language | EN |
| Citations received | 4 |
| References cited | 9 |
A constraint on radiocarbon reservoir models is that the DC gain of a system (system transfer function at zero frequency) should equal the equilibrium ratio of the atmospheric radiocarbon mass to the production rate. The simple one-box model is essentially a “black box” but the value of the single residence time is theoretically equal to the DC gain. Using a sunspot-production rate algorithm as the forcing function, predictions of the one-box model match the 14 C data from ad 1700 to 1900 better than the 3-box, 5-box and box-diffusion models. The more complex models tend to pile up 14 C in the atmosphere because their DC gains are too high, and they over-attenuate the de Vries “wiggles”. The DC gains can be reduced to more acceptable levels by adjusting model parameters, particularly the sizes of the ocean reservoirs. Better fits to the “wiggles” are also obtained by parameter adjustment. Water content of deep-sea sediments constitutes an extra reservoir for dead carbon, and should help reduce system DC gain
Atmospheric model · Atmospheric sciences · Box model · Diffusion · Meteorology · Physics · Thermodynamics · Atmospheric and Environmental Gas Dynamics · Environmental Science · Geomagnetism and Paleomagnetism Studies · Global Energy and Sustainability Research · Geology
| Citations per year | 0.09 |
|---|---|
| Citation span | 1982 - 1992 (11) |
| Highly cited | No |