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Popcorn Clouds Over Sri Lanka and Palk Strait

7.5N 80.1E

March 3rd, 2013 Category: Clouds

India – March 3rd, 2013

Popcorn clouds dot the skies over the northern part of Sri Lanka and the Palk Strait, which separate the island-nation from India. This type of cloud cover is likely an indication of plant growth: increased phytosynthesis releases water vapor into the air which then rises and cools, condensing into small, dotted clouds.

Cyclone Nilam (02B) Makes Landfall Over India

10.0N 76.1E

November 1st, 2012 Category: Tropical Storms

Cyclone Nilam (02B) – October 31st, 2012

Enhanced image

Track of Cyclone Nilam (02B) - October 31st, 2012 © Univ. of Wisconsin

Track of TS 02B

Early on October 30, RSMC New Delhi reported that Tropical Storm Two (02B) had intensified into a Cyclonic Storm and named it as Nilam while it was located about 100 km (60 mi) to the northeast of Trincomalee in Sri Lanka. During that day, Nilam moved towards the northwest, while continuing to develop further.

Early on October 31, the JTWC reported that Nilam had reached its 1-minute peak windspeeds of 100 km/h (60 mph), while RSMC New Delhi reported 3-minute peak sustained windspeeds of 85 km/h (55 mph). Later that day the system made landfall on the Indian Coast near Mahabalipuram, before the JTWC issued its final advisory on Nilam as it started to rapidly weaken over land.

Tropical Storm Two (02B) Brings Torrential Rains to Sri Lanka

7.2N 82.5E

October 30th, 2012 Category: Tropical Storms

Tropical Storm Two (02B) – October 29th, 2012

Enhanced image

Track of Tropical Storm Two (02B) - October 29th, 2012 © Univ. of Wisconsin

Track of TS 02B

An area of convection crossed the Isthmus of Kra on 23 October and entered the Bay of Bengal from the Pacific Ocean. It slowly organized and the Joint Typhoon Warning Center issued a TCFA at 0330 UTC on 28 October.

The India Meteorological Department later upgraded the low pressure area to a Depression on the same day, when the storm was located about 550 km (340 mi) east-northeast of Trincomalee, Sri Lanka. The storm further intensified into a Deep Depression on 29 October, and JTWC upgraded the system to a Tropical Storm.

As of 1930 IST (0200 UTC), 29 October 2012, Deep Depression BOB 02 was located near latitude 9.0°N and longitude 82.5°E, about 130 km (80 mi) east-northeast of Trincomalee, Sri Lanka and 500 km (310 mi) south-southeast of Chennai, India. The storm is forecast to intensify into a Cyclonic Storm, initially move westwards and then northwestwards, and cross north Tamil Nadu and adjoining south Andhra Pradesh coast between Nagapattinam and Nellore by 1200 UTC of October 31, 2012. Maximum sustained 3-minute wind speeds are estimated at 30 knots (55 km/h). Minimum central pressure is estimated at 1000 hPa (mbar).

The storm brought torrential rains to Sri Lanka. The Puttalam – Mannar road has come under about a meter of water near Eluwankulama due to the overflowing of the Kala Oya river. A 27-year-old woman was killed when a sand rock fell on her house during heavy rains at Habaraduwa in Galle District, according to the police. Rail services were temporarily suspended when electricity lines fell on the railway track.

Popcorn Clouds and Good to High Photosynthetic Activity in India and Sri Lanka

8.4N 80.1E

March 13th, 2012 Category: Vegetation Index

India and Sri Lanka - January 6th, 2012

This FAPAR image shows the vegetation index of southern India (upper left) and the island-nation of Sri Lanka (lower right). Both countries show an index of photosynthetic activity that ranges primarily from good (green) to high (rusty red), although some patches of low activity (yellow) can also be seen.

In Sri Lanka, the largest area of high activity is located near the western coast. Popcorn clouds hover over both countries – as these clouds frequently form when growing, photosynthetizing plants release water vapour into the atmosphere, it is no surprise to see them forming over areas of high photosynthetic activity.

Good Vegetation Index in Southern India and Sri Lanka

9.3N 80.0E

January 17th, 2012 Category: Vegetation Index

India - January 3rd, 2012

This FAPAR image shows the vegetation index of southern India and the island nation of Sri Lanka, separated by the Palk Strait. The index is generally good throughout, as shown by the green false-coloring.

Some areas of high photosynthetic activity, appearing rusty-red in color, can be observed near the coast, particularly the southwestern coast of India. A few, very sparse patches of low activity, yellow in color, can be observed.

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