Academic Journal
Equatorial waves in temperature in the altitude range 4 to 70 km
| العنوان: | Equatorial waves in temperature in the altitude range 4 to 70 km |
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| المؤلفون: | Murthy, B. V. Krishna, Satheesan, K., Parameswaran, K., Sasi, M. N., Ramkumar, Geetha, Bhavanikumar, Y., Raghunath, K., Krishniah, M. |
| المصدر: | Quarterly Journal of the Royal Meteorological Society ; volume 128, issue 581, page 819-837 ; ISSN 0035-9009 1477-870X |
| بيانات النشر: | Wiley |
| سنة النشر: | 2002 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Using altitude profiles of temperature in the range 4 to 70 km derived from Mesosphere–Stratosphere–Troposphere radar and lidar observations at Gadanki (13.5 ° N,79.2 ° E) from 18 January 1999 to 5 March 1999, characteristics of equatorial waves are studied. Two‐dimensional Fourier‐transform analysis of the temperature profiles is carried out to identify the periodicities and their vertical wave numbers. From the characteristics obtained, equatorial slow Kelvin waves with periodicities 15.7 d, 9.4 d, 7.8 d and 6.7 d are identified in the troposphere and stratosphere regions and among these 7.8 d and 6.7 d periodicities are found to penetrate into the mesosphere. Equatorial waves with smaller periodicities in the range 5.2 d to 3.6 d are also observed. The vertical flux of horizontal momentum (zonal) of the identified slow Kelvin‐wave periodicities in the altitude region 4–25 km is estimated. It is found that equatorial waves modulate tropical tropopause temperature and altitude. Copyright © 2002 Royal Meteorological Society. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1256/0035900021643700 |
| الاتاحة: | http://dx.doi.org/10.1256/0035900021643700 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1256%2F0035900021643700 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1256/0035900021643700 |
| Rights: | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| رقم الانضمام: | edsbas.BC419488 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1256/0035900021643700 |
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