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4. Validation of satellite-derived tropical cyclone heat potential with observations in the North Indian Ocean

Author

Nagamani, Pullaiahgari V., Ali, Meer M., Goni, Gustavo J., Pedro, DiNezio N., Pezzullo, John C., Udaya Bhaskar, Tata V. S., Gopalakrishna, Vissa Venkata, and Kurian, Nisha

Subjects
In situ, Indian ocean, Meteorology, Climatology, Earth and Planetary Sciences (miscellaneous), Environmental science, Satellite, Altimeter, Sea-surface height, Electrical and Electronic Engineering, Tropical cyclone, Bathythermograph, Argo
Abstract

Tropical cyclone heat potential (TCHP) is an important ocean parameter influencing cyclones and hurricanes. The best approach for computing TCHP is to use in situ measurements. However, since in situ data have both spatial and temporal limitations, there is a need for satellite-based estimations. One potential solution is to use sea surface height anomalies (SSHAs) from altimeter observations. However, any estimation derived from satellite measurements requires extensive regional validation. In this letter, we compare satellite-derived TCHP values with those estimated using in situ measurements of the North Indian Ocean collected during 1993–2009. All the available measurements collected from the conductivity temperature and depth (CTD) profiler, expendable CTD profiler (XCTD), bathythermograph (BT), expendable BT (XBT) and Argo floats were used to estimate in situ derived TCHP values. TCHP estimations from satellite observations and in situ measurements are well correlated, with coefficient of determinat...

Published
2012
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8. Temporal Variations of Atmospheric CO2 in Dehradun, India during 2009.

Author

Sharma, Neerja, Nayak, Rabindra K., Dadhwal, Vinay K., Kant, Yogesh, and Ali, Meer M.

Abstract

The present study reports the temporal variations of CO2 mixing ratio measured using Vaisala GMP-343 sensor (at 15 m height) in Dehradun (30.1 °N, 77.4 °E) during 2009. Being a valley station, the mixing ratios are controlled by biospheric processes but not by large scale transport phenomenon or local pollution. A distinct diurnal cycle varies from 317.9 ppm in the afternoon to 377.2 ppm in the morning (before sunrise). The minimum early morning (0700-1000 IST) drop and minimum afternoon (1300-1700 IST) trough observed during monsoon months are related to the enhanced vegetation activity due to rain at the site. The maximum night time (2200 IST to next day 0700 IST) build up of CO2 observed during monsoon season is associated with the increase in heterotrophic respiration due to high moisture content in the soil. This is also confirmed by the positive coherence between night time CO2 mixing ratio with soil respiration simulated from Carnagie-Ames-Standford Approach (CASA) model. The strong negative coherence with net ecosystem productivity (simulated from the same model) shows that observations captured the regional changes in emission and uptake of CO2 in atmosphere. [ABSTRACT FROM AUTHOR]

Published
2013
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9. The Folio: Magazine of Forman Christian College, Lahore. Mar 1955

Author

Tafweez Ahmad; Parveen Raheem; Dilo Najmuddin; Smith, D. A.; Inayatullah Malik; Diyamir Lall; Farooqui, M. Afzal H.; Syed Abid Saeed; Eshtiaq A. Siddiqui; Akhtar Niazi; Tayebuddin Mahtab; Tariq Kamal; Abid Husain Qureshi; Mohsin Manzoor; Manzur Mughal; Envr Sajjad; Asif Ali; Meer, M. M.; Pervez Akhter; Francis, Allan; Basharat Ahmad; Khalid Masood; Sleem Jehangir; Mohammed Pervez; Altaf Hussain; Sharif Fazal Dean; Mohammad Saeed Akhtar; Khalid Saeed; Riaz Haider; Mukhtar Ahmed; Saeed Ahmad Leghari; Bangash, M. Aqib; Khalid Leghari, Tafweez Ahmad; Envr Sajjad; Diyamir S. Lall, Tafweez Ahmad; Parveen Raheem; Dilo Najmuddin; Smith, D. A.; Inayatullah Malik; Diyamir Lall; Farooqui, M. Afzal H.; Syed Abid Saeed; Eshtiaq A. Siddiqui; Akhtar Niazi; Tayebuddin Mahtab; Tariq Kamal; Abid Husain Qureshi; Mohsin Manzoor; Manzur Mughal; Envr Sajjad; Asif Ali; Meer, M. M.; Pervez Akhter; Francis, Allan; Basharat Ahmad; Khalid Masood; Sleem Jehangir; Mohammed Pervez; Altaf Hussain; Sharif Fazal Dean; Mohammad Saeed Akhtar; Khalid Saeed; Riaz Haider; Mukhtar Ahmed; Saeed Ahmad Leghari; Bangash, M. Aqib; Khalid Leghari, and Tafweez Ahmad; Envr Sajjad; Diyamir S. Lall

Abstract

Annual Number, Tafweez Ahmad-Editorial-Swan-Song. pp. 3-5; Parveen Raheem-Article-Humour in Life and Literature. pp. 7-11; Dilo Najmuddin-Morte de L'Education. pp. 12-13; Tafweez Ahmad-Allegra's Mother (a condensed biography). pp. 14-20; Smith, D. A.-Poetry-The Silvery Haze of Gentle Light. pp. 20; Inayatullah Malik-Article-The Craft of a Journalist. pp. 21-24; Smith, D. A.-Poetry-A Valentine: Love Lost. pp. 24; Diyamir Lall-A Review. pp. 25; Farooqui, M. Afzal H.-Article-Photography's Tribute to Civilization. pp. 26-29; Syed Abid Saeed-Article-Sui Gas. pp. 30-32; Dilo Najmuddin-Poetry-Address to a Professor. pp. 32; Eshtiaq A. Siddiqui-Animals and Classics. pp. 33-34; Smith, D. A.-Poetry-A Valentine-I Loved You, Dear. pp. 34; Akhtar Niazi-Travelogue-Six Weeks of a Summer in Iran. pp. 35-37; Tayebuddin Mahtab-Speech-The Valedictory Address Delivered in the College Assembly on 28th Feb. 1955. pp. 38-40; Poetry-The Halls. pp. 41; Tariq Kamal-Velte Hall. pp. 42; Abid Husain Qureshi-Kennedy Hall. pp. 43; Mohsin Manzoor-Griswold Hall. pp. 44; Manzur Mughal-Newton Hall. pp. 45; Poetry-The Societies. pp. 46; Envr Sajjad-The College Union Society. pp. 47-48; Tayebuddin Mahtab-The Speakers' Union. pp. 48-49; Asif Ali-The Fifteen. pp. 49-50; Meer, M. M.-Biological Association. pp. 50-51; Pervez Akhter-The Mathematics Society. pp. 51-52; Francis, Allan-Benade Physics Association. pp. 52-53; Basharat Ahmad-Speers Chemical Society. pp. 53-54; Khalid Masood-Forman Economics Society. pp. 54-55; Sleem Jehangir-The Political Science Society. pp. 55-56; Mohammed Pervez-The Arabic and Persian Society. pp. 57; Altaf Hussain-Photographic Association. pp. 57-58; Sharif Fazal Dean-Students, Christian Movement. pp. 58; Poetry-Sports. pp. 59; Mohammad Saeed Akhtar-Sports-Volley Ball. pp. 60-61; Khalid Saeed-Sports-Basket Ball. pp. 61; Riaz Haider-Sports-Badminton. pp. 62; Mukhtar Ahmad-Sports-Tennis. pp. 62-64; Saeed Ahmad Leghari-Sports-Athletics. pp. 64-65; Bangash, M. Aqib-Sports-Hockey. pp. 65-66; Kha, Editorial Board, The Folio 1954-55. after contents; Academic Personalities. after page 34; F.C.C. Good-will Mission to Iran. before page 35; The Mathematics Society 1954-55. after page 46; The College Union Officials 1954-55. before page 47; Volleyball Club 1954-55. after page 60; F.C.C. Basketball Team, Punjab & University Champions 1955. before page 61

Published
1955

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