Description of the model parameters | Regularization parameter | |
---|---|---|
Internal field | Time-dependent | \(\lambda _t = {1.0}\,{\left( \frac{\hbox {nT}}{\hbox {yr}^{3}}\right) ^{-2}}\), \(\lambda _{t_\text {s}} = {0.03}\,{\left( \frac{\hbox {nT}}{\hbox{yr}^{2}}\right) ^{-2}}\), \(\lambda _{t_\text {e}} = {0.03}\,{\left( \frac{\hbox {nT}}{\hbox {yr}^{2}}\right) ^{-2}}\), |
\(\lambda _{0} = 60\), \(\lambda _{m} = 0.65\) | ||
External field | RC-baseline corrections | \(\lambda _{\text {ext}} = {4 \times 10^5}\,{\left (\frac{\hbox {nT}}{\hbox {yr}}\right )^{-2}}\) |
\(\hbox {Calibration}^{1}\) | CryoSat-2 FGM1 | \(\lambda _b = {9.1\times 10^2}\,{\left (\frac{\hbox {eu}}{\hbox {yr}}\right )^{-2}}\), \(\lambda _s = {9.1\times 10^{10}}\,{\left (\frac{\hbox {eu}}{\hbox {nTyr}}\right )^{-2}}\), \(\lambda _u = {2.8\times 10^2}\,{\left (\frac{1{}^{\circ }}{\hbox {yr}}\right )^{-2}}\) |
CryoSat-2 FGM2 | \(\lambda _b = {9.1\times 10^2}\,{\left (\frac{\hbox {eu}}{\hbox {yr}}\right )^{-2}}\), \(\lambda _s = {9.1\times 10^{10}}\,{\left (\frac{\hbox {eu}}{\hbox {nTyr}}\right )^{-2}}\), \(\lambda _u = {2.8\times 10^2}\,{\left (\frac{1{}^{\circ }}{\hbox {yr}}\right )^{-2}}\) | |
CryoSat-2 FGM3 | \(\lambda _b = {9.1\times 10^2}\,{\left (\frac{\hbox {eu}}{\hbox {yr}}\right )^{-2}}\), \(\lambda _s ={9.1\times 10^{10}}\,{\left (\frac{\hbox {eu}}{\hbox {nTyr}}\right )^{-2}}\), \(\lambda _u ={2.8\times 10^2}\,{\left (\frac{1{}^{\circ }}{\hbox {yr}}\right )^{-2}}\) | |
GRACE-A | \(\lambda _b = {1.2\times 10^3}\,{\left (\frac{\hbox {eu}}{\hbox {yr}}\right )^{-2}}\), \(\lambda _s = {1.2\times 10^{13}}{\left (\frac{\hbox {eu}}{\hbox {nTyr}}\right )^{-2}}\), \(\lambda _u = {3.7\times 10^8}\,{\left (\frac{1{}^{\circ }}{\hbox {yr}}\right )^{-2}}\) | |
GRACE-B | \(\lambda _b = {1.2\times 10^3}\,{\left (\frac{\hbox {eu}}{\hbox {yr}}\right )^{-2}}\), \(\lambda _s = {1.2\times 10^{13}}\,{\left (\frac{\hbox {eu}}{\hbox {nTyr}}\right )^{-2}}\), \(\lambda _u = {3.6\times 10^8}\,{\left (\frac{1{}^{\circ }}{\hbox {yr}}\right )^{-2}}\) |