Research Article
Climatic Variation at Thumba Equatorial Rocket Launching Station, India
Table 4
Climatology and Δ of visibility code, low cloud, high cloud, and total cloud.
| | Month | Visibility code (0830 IST) | Low cloud (0830 IST) | Middle cloud (0830 IST) | High cloud (0830 IST) | Total cloud (0830 IST) | | 1964–1993 | 1979–2008 | Δ | 1964–1993 | 1979–2008 | Δ | 1964–1993 | 1979–2008 | Δ | 1964–1993 | 1979–2008 | Δ | 1964–1993 | 1979–2008 | Δ |
| | JAN | 96.79 | 96.98 | +0.19 | 0.55 | 0.47 | −0.08 | 0.81 | 0.78 | −0.03 | 1.18 | 1.35 | +0.17 | 2.51 | 2.53 | +0.02 | | FEB | 96.75 | 96.91 | +0.16 | 0.48 | 0.47 | −0.01 | 0.66 | 0.58 | −0.08 | 1.08 | 1.16 | +0.08 | 2.21 | 2.17 | −0.04 | | MAR | 96.61 | 96.88 | +0.27 | 0.62 | 0.71 | +0.09 | 0.54 | 0.37 | −0.17 | 1.06 | 1.21 | +0.15 | 2.20 | 2.24 | +0.04 | | APR | 96.77 | 96.86 | +0.09 | 1.25 | 1.57 | +0.32 | 1.00 | 0.87 | −0.13 | 1.72 | 1.79 | +0.07 | 3.91 | 3.94 | +0.03 | | MAY | 96.70 | 96.68 | −0.02 | 2.02 | 2.08 | +0.06 | 1.45 | 1.43 | −0.02 | 1.56 | 1.64 | +0.08 | 4.87 | 4.68 | −0.19 | | JUN | 96.26 | 96.43 | +0.17 | 2.86 | 2.84 | −0.02 | 2.31 | 2.37 | +0.06 | 1.16 | 1.49 | +0.33 | 5.96 | 5.90 | −0.06 | | JUL | 96.10 | 96.37 | +0.27 | 2.74 | 2.74 | +0.00 | 2.50 | 2.82 | +0.32 | 1.26 | 1.67 | +0.41 | 5.96 | 6.06 | +0.10 | | AUG | 96.41 | 96.58 | +0.17 | 2.27 | 2.38 | +0.11 | 2.31 | 2.28 | −0.03 | 1.31 | 1.86 | +0.55 | 5.63 | 5.68 | +0.05 | | SEP | 96.48 | 96.63 | +0.15 | 2.16 | 2.15 | −0.01 | 1.63 | 1.62 | −0.01 | 1.34 | 1.62 | +0.28 | 4.93 | 4.90 | −0.03 | | OCT | 96.76 | 96.70 | −0.06 | 1.75 | 1.96 | +0.21 | 2.07 | 2.14 | +0.07 | 1.29 | 1.73 | +0.44 | 4.92 | 5.06 | +0.14 | | NOV | 96.68 | 96.65 | −0.03 | 1.44 | 1.55 | +0.11 | 1.86 | 1.94 | +0.08 | 1.26 | 1.72 | +0.46 | 4.40 | 4.65 | +0.25 | | DEC | 96.81 | 96.79 | −0.02 | 1.01 | 0.91 | −0.10 | 1.40 | 1.15 | −0.25 | 1.20 | 1.40 | +0.20 | 3.56 | 3.25 | −0.31 |
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DEC, JAN, and FEB: winter; MAR, APR, and MAY: summer; JUN, JUL, AUG, and SEP: SW monsoon; OCT, NOV: NE monsoon.
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