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South Asian black carbon aerosols increase glacial mass loss over Tibetan plateau: Study
=The South Asia region adjacent to the Tibetan Plateau has among the highest levels of black carbon emission in the world.
January 02, 2023 (pti): Black carbon aerosols have indirectly affected the mass gain of the Tibetan Plateau glaciers by changing long-range water vapour transport from the South Asian monsoon region, a study has found.
The South Asia region adjacent to the Tibetan Plateau has among the highest levels of black carbon emission in the world, the researchers said.Black carbon aerosols are produced by the incomplete combustion of fossil fuels and biomass, and are characterised by strong light absorption.
Many studies have emphasised black carbon aerosols from South Asia can be transported across the Himalayas to the inland region of the Tibetan Plateau.Researchers noted that black carbon deposition in snow reduces the albedo of surfaces — a measure of how much of Sun's radiations are reflected — which may accelerate the melting of glaciers and snow cover, thus changing the hydrological process and water resources in the region.
The study, published in Nature Communications, found that since the 21st century, South Asian black carbon aerosols have indirectly affected the mass gain of the Tibetan Plateau glaciers by changing long-range water vapour transport from the South Asian monsoon region.
Black carbon aerosols in South Asia heat up the middle and upper atmosphere, thus increasing the North–South temperature gradient," said Professor KANG Shichang from Chinese Academy of Sciences (CAS).
Accordingly, the convective activity in South Asia is enhanced, which causes convergence of water vapour in South Asia. Meanwhile, black carbon also increases the number of cloud condensation nuclei in the atmosphere," Shichang said.
These changes in meteorological conditions caused by black carbon aerosols make more water vapour form precipitation in South Asia, and the northward transport to the Tibetan Plateau was weakened, the researchers said.As a result, precipitation in the central and the southern Tibetan Plateau decreases during the monsoon, especially in the southern Tibetan Plateau, they said.
The decrease in precipitation further leads to a decrease of mass gain of glaciers.From 2007 to 2016, the reduced mass gain by precipitation decrease accounted for 11% of the average glacier mass loss on the Tibetan Plateau and 22.1% in the Himalayas.The transboundary transport and deposition of black carbon aerosols from South Asia accelerate glacier ablation over the Tibetan Plateau.Meanwhile, the reduction of summer precipitation over the Tibetan Plateau will reduce the mass gain of plateau glaciers, which will increase the amount of glacier mass deficit, Shichang added.
A commemorative service was held in memory of Rasaiah Parthipan commonly known by the nom de guerre ‘Thileepan’ in Nallur Jaffna this morning (26).
Parthipan a revolutionary member of the LTTE and a student of the University of Jaffna, commenced a hunger strike on 15th September 1987 untill his death on 26th September 1987. He was 23 years old at the time of his demise.
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Landslide Early Warnings issued to the districts of Colombo, Galle, Gampaha, Hambanthota, Kalutara, Kandy, Kegalle, Kurunegala, Matara, Nuwara Eliya and Ratnapura
The National Building Research Institute has issued landslide early warnings to the districts of Colombo, Galle, Gampaha, Hambanthota, Kalutara, Kandy, Kegalle, Kurunegala, Matara, Nuwara Eliya and Ratnapura from 16:00 hrs on 25.09.2026 To 16:00 hrs on 26.09.2026
Accordingly,
LEVEL III [RED] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of Neluwa, Nagoda, Niyagama and Thawalama inthe Galle district, Ganga Ihala Korale, Udapalatha, Doluwa and Pasbage Korale in the Kandy district, and Kothmale West, Ambagamuwa, Kotmale East and Norwood in the Nuwara Eliya district.
LEVEL II [AMBER] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of Elpitiya, Baddegama and Karandeniya in the Galle district, Walallawita in the Kalutara district, Deltota, Udunuwara, Gangawata Korale, Yatinuwara and Panvila in the Kandy district, Aranayake, Dehiowita, Mawanella, Deraniyagala and Yatiyanthota in the Kegalle district, Thalawakelle in the Nuwara Eliya district and Ratnapura and Pelmadulla in the Ratnapura district.
LEVEL I [YELLOW] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of Seethawaka and Padukka in the Colombo district, Attanagalla and Mirigama in the Gampaha district, Katuwana and Walasmulla in the Hambanthota district, Ingiriya and Bulathsinhala in the Kalutara district, Hatharaliyadda, Poojapitiya, Medadumbara, Kundasale, Ududumbara, Thumpane, Akurana, Pathadumbara, Harispattuwa and Pathahewaheta in the Kandy district, Warakapola, Bulathkohupitiya, Galigamuwa, Kegalle and Ruwanwella in the Kegalle district, Mallawapitiya, Alawwa, Polgahawela and Mawathagama in the Kegalle district, Pitabeddara, Kotapola and Pasgoda in the Matara district, Nuwara Eliya in the Nuwara Eliya district and Elapatha, Ayagama, Nivithigala, Kuruwita and Kalawana in the Ratnapura district
Parliament yesterday passed the Twenty-Second Amendment to the Constitution Bill and the Judicature (Amendment) Bill with two-thirds majorities, with 158 MPs voting in favour and 63 against each Bill.
The Illankai Tamil Arasu Kadchi (ITAK) and Sri Lanka Muslim Congress (SLMC) voted with the SJB against the Bills.
NDF MPs Ravi Karunanayake and Faizer Musthapha and SJB Badulla District MP Nayana Wasalathilaka were not present when the votes were taken.
The final vote on the Judicature (Amendment) Bill was announced at around 8.08 p.m. after Opposition MPs called for divisions on its clauses during the Committee Stage.
The votes followed a two-day debate which commenced on Thursday (24), after Justice and National Integration Minister Harshana Nanayakkara presented the Bills for their Second Reading.
The Supreme Court’s determination on the Bills was presented to Parliament on Tuesday (22) by Speaker Dr Jagath Wickramaratne. The Court determined that the 22nd Amendment Bill did not require approval at a referendum and could be passed by a special two-thirds majority in Parliament.
The amendment provides for raising the mandatory retirement age of Supreme Court judges from 65 to 67 and that of Court of Appeal judges from 63 to 65. It also provides for the Chief Justice to retire at 67 or after completing six years in office, whichever comes earlier.
The Speaker informed Parliament that the Judicature (Amendment) Bill could be passed by a simple majority.
The SJB opposed the legislation and its MPs attended Parliament dressed in black yesterday. The party also staged a protest at Polduwa Junction, Battaramulla, under the theme “No to 22, which destroys democracy”, with Opposition Leader Sajith Premadasa and several SJB politicians participating.
Thileepan rembered on 39th death anniversary
Landslide Early Warnings issued to the districts of Colombo, Galle, Gampaha, Hambanthota, Kalutara, Kandy, Kegalle, Kurunegala, Matara, Nuwara Eliya and Ratnapura
Showers in the Western, Uva and Sabaragamuwa provinces and in Galle, Matara, Kandy, Nuwara-Eliya, Batticaloa and Ampara districts.
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