Show simple item record

contributor authorVernier, J.-P.
contributor authorFairlie, T. D.
contributor authorDeshler, T.
contributor authorVenkat Ratnam, M.
contributor authorGadhavi, H.
contributor authorKumar, B. S.
contributor authorNatarajan, M.
contributor authorPandit, A. K.
contributor authorAkhil Raj, S. T.
contributor authorHemanth Kumar, A.
contributor authorJayaraman, A.
contributor authorSingh, A. K.
contributor authorRastogi, N.
contributor authorSinha, P. R.
contributor authorKumar, S.
contributor authorTiwari, S.
contributor authorWegner, T.
contributor authorBaker, N.
contributor authorVignelles, D.
contributor authorStenchikov, G.
contributor authorShevchenko, I.
contributor authorSmith, J.
contributor authorBedka, K.
contributor authorKesarkar, A.
contributor authorSingh, V.
contributor authorBhate, J.
contributor authorRavikiran, V.
contributor authorDurga Rao, M.
contributor authorRavindrababu, S.
contributor authorPatel, A.
contributor authorVernier, H.
contributor authorWienhold, F. G.
contributor authorLiu, H.
contributor authorKnepp, T. N.
contributor authorThomason, L.
contributor authorCrawford, J.
contributor authorZiemba, L.
contributor authorMoore, J.
contributor authorCrumeyrolle, S.
contributor authorWilliamson, M.
contributor authorBerthet, G.
contributor authorJégou, F.
contributor authorRenard, J.-B.
date accessioned2019-09-19T10:08:30Z
date available2019-09-19T10:08:30Z
date copyright12/26/2017 12:00:00 AM
date issued2017
identifier otherbams-d-17-0014.1.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4261994
description abstractAbstractWe describe and show results from a series of field campaigns that used balloonborne instruments launched from India and Saudi Arabia during the summers 2014?17 to study the nature, formation, and impacts of the Asian Tropopause Aerosol Layer (ATAL). The campaign goals were to i) characterize the optical, physical, and chemical properties of the ATAL; ii) assess its impacts on water vapor and ozone; and iii) understand the role of convection in its formation. To address these objectives, we launched 68 balloons from four locations, one in Saudi Arabia and three in India, with payload weights ranging from 1.5 to 50 kg. We measured meteorological parameters; ozone; water vapor; and aerosol backscatter, concentration, volatility, and composition in the upper troposphere and lower stratosphere (UTLS) region. We found peaks in aerosol concentrations of up to 25 cm?3 for radii > 94 nm, associated with a scattering ratio at 940 nm of ?1.9 near the cold-point tropopause. During medium-duration balloon flights near the tropopause, we collected aerosols and found, after offline ion chromatography analysis, the dominant presence of nitrate ions with a concentration of about 100 ng m?3. Deep convection was found to influence aerosol loadings 1 km above the cold-point tropopause. The Balloon Measurements of the Asian Tropopause Aerosol Layer (BATAL) project will continue for the next 3?4 years, and the results gathered will be used to formulate a future National Aeronautics and Space Administration?Indian Space Research Organisation (NASA?ISRO) airborne campaign with NASA high-altitude aircraft.
publisherAmerican Meteorological Society
titleBATAL: The Balloon Measurement Campaigns of the Asian Tropopause Aerosol Layer
typeJournal Paper
journal volume99
journal issue5
journal titleBulletin of the American Meteorological Society
identifier doi10.1175/BAMS-D-17-0014.1
journal fristpage955
journal lastpage973
treeBulletin of the American Meteorological Society:;2017:;volume 099:;issue 005
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record