Unlike the annual phase, the geographical distributions of semi-annual phase do not follow obvious rules.
The annual phases agree remarkably well for three independent techniques.
The annual cycle is mainly driven by the steric contributions, while the annual phases of non-steric (mass component) sea level changes are almost a half year later than the steric sea level changes.
The annual phase is almost found in about January for the non-tropical regions of the Southern Hemisphere and in about July for the non-tropical regions of the Northern Hemisphere, but it has no clear symmetry in tropics.
For annual signal with truncated degree 3, four GPS strategies can reduce annual amplitudes by about 29.2% in X, 5.6% in Y, and 27.9% in Z with respect to truncated degree 1. Annual phases of all GPS solutions from MORVEL56 and ITRF08 are almost close to the GRACE solution with truncated degrees from 3 to 10, while the semi-annual signals are relatively weaker for all cases.
During the annual phases of high activity, the activity at weekends increases less than at weekdays; and during phases of normal or little activity, the activity is, at least in some periods, slightly stronger at weekends.
Figure 4 highlights errors in the calculation of both annual amplitudes (Figure 4a) and annual phases (Figure 4b), found when many artificially generated MODIS time series, such as that shown in Figure 3, were subjected to standard TFA and the input amplitudes and phases compared with the TFA-calculated amplitudes and phases.
Three annual phases of data collection were planned.
Thus, the large onset of poplar seed hair development, which coincidently occurs during the annual phase of poplar flowering, may be related to the low expression of SPL9 since this gene has an inhibitory role on trichome formation.
Moreover, the miR156 regulates the expression of the Squamosa Promoter-binding protein-Like (spl) gene, which plays a role in the juvenile-to-adult and annual phase transitions [ 12, 13, 24].
Half a million kids go back to school in Afghanistan KABUL, 9 September 2004 – As millions of schoolchildren across the world return to the classroom this week, an anticipated half a million boys and girls from the southern and eastern provinces of Afghanistan will also be going back to study, as the second annual phase of the country's Back to School campaign begins.
