CER Image Case Study

CER Image Case Study

From the CER maps (Figure 9), it can be observed that in 2013 ISMR the entire region had witnessed high CER values while other years were partially cover by cloud drops of different radii. The high rainfall intensity during 2013 ISMR could be the manifestation of the high CER values observed during that year compared to the other years (Figure 12). However, the low CER values in the other years can be seen in conjugation with high aerosol loading during that period. Similar trend is also observed in LWP plots for the study area during 2012–15 ISMR (Fig 13). It is evident from the figure 9 that LWP varies from low to high values over the region while, it is more homogeneous in 2014 and 2015 ISMR. The OLR was considerably ... Show more content on Helpwriting.net ...During June and July aerosol loading was comparatively higher at around 2–6 km height compared to the rest of the months. This possibly explains the high values of COF (figure 15 (b)) at higher altitudes in these two months due to convection processes that might have contributed to the formation of CCN (Jiang et al., 2007; Jiang et al., 2011). Excess rainfall events during 2013 ISMR, had resulted in heavy wash out of aerosols in the entire season which can be observed from low AOF values. The month of June witnessed an early onset of monsoon because of which there were more washouts of aerosols and September being the offset phase of the monsoon, witnessed high aerosol loading. July and August witnessed low AOF values, except that August had higher value of nearly 30% than that of June which had nearly 10–25% at 0.5–2 km altitude range The aerosol loading during June, July and August above the lower troposphere up to 4–6 km altitude might have contributed to cloud formation at higher altitudes which can be seen in the COF values of nearly 10–20%, 15–20% and 10–30% respectively at 12–17 km height range. The study region experienced deficient rainfall conditions during the drought years of 2014 and 2015 leading to more aerosols loading over the study region. In 2014, June and September months witnessed high aerosol loading of nearly 50–65% at 1–4 km and 30–45%

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