Please insert Figure 3 here
According to the graphs of Soil Moisture Storage Anomalies (SMSA) and
Snow Water Equivalent Anomalies (SWEA), it is noticed that the soil
moisture storage over Turkey manifests a sharp change in a monthly way
with a total descending trend from the Jan 2003 to the Dec 2016. The max
soil moisture storage (7.08 cm) was recorded in Feb 2010 while the min
amount (-7.27 cm) was recorded in Feb 2014. The SWEA, however, shows a
relatively ascending trend through the same period. The monthly
variations in the snow storage over Turkey is not so dramatic except 3
points where the maximum (Mar 2003 and 2012) and minimum (Feb 2014)
storages happened.
Temporal Variations of TWSA and GWSA
GRACE gridded data provides Terrestrial Water Storage Anomalies
estimated directly from the space based on the variations in the
gravitational pull of the earth. This integrated TWSA values shall be
disintegrated into the ingredients with the aid of auxiliary data from
other resources, mainly modelled data. The GRACE-GWSA fluctuations
isolated from TWSA using GLDAS based SMS and SWE variations. The
temporal fluctuations of TWSA and GWSA are shown in figures 4 and 5,
respectively. The graphs indicate a descending trend for both TWSA and
GWSA over Turkey for the time period between 2003 and 2016. The maximum
and minimum variations in TWSA occurred in Sep 2008 and Mar 2004 as 18.5
and -17.8 cm, respectively. According to GWSA graph, the max loss of the
storage of groundwater happened in Oct 2014 with an amplitude of almost
-19.5 cm. The total loss of TWSA and GWSA during the study period
[from Jan 2003 to Dec 2016] was found to be approximately 11 and 6
cm, respectively.