scholarly journals Analysis of pre-monsoon thunderstorm frequency over Srlniketan, Alipore and Kalaikunda -The possible association with solar activity

MAUSAM ◽  
2021 ◽  
Vol 47 (4) ◽  
pp. 383-394
Author(s):  
INDRANI KAR ◽  
R. BONDYOPADHAYA

ABSTRACT -General characteristic features of thunderstorm frequency (TSF) observed during (1951-89) during pre-monsoon season at Sriniketan (23°39'N, 87"42'E), Alipore (22° 32'N, 88"20'E) and Kalaikunda (21°20'N, 87" 13'E) have been studied. It is seen that premonsoon TSF follows a rough periodicity 0f 6.6) year. For Kalaikunda (KLK) there is an overal1 upward trend and for Sriniketan (SKT) an overall downward trend; whereas, for Alipore (ALP) the trend pattern remains practically constant. The maximum TSF attained by all these three stations is nearly twice that of mean TSF of respective stations. The solar influence on the frequency of thunderstorm (TS) has been investigated and found to be interesting. TSF over SKT and KLK attained minimum value while that over ALP was near minimum during 1957; which in turn was the year of maximum sunspot (SS) number over the entire period of analysis. Now in general, if we take SS number and TSF of same year and calculate correlation coefficient (CC) considering all the years. i.e., taking SS without any restriction, the CC comes out to be quite small. But the result is just the reverse when the TSF value of those years is considered when SS number is higher. In particular when SS number exceeds some critical value (~140), TSF decreases sharply. The effect of solar sub-cycle, 11-yearcycle and 22-yearcycle un TS has also been discussed. It is seen that during min-max sub-phases, mean TSF is comparatively higher than its value in neighbouring max-min sub-phases and also it is in opposite phase in relation with mean SS. During 11-yearcycle also in most of the cases an opposite phase relationship exists between mean TSF and mean SS.    

MAUSAM ◽  
2021 ◽  
Vol 57 (2) ◽  
pp. 221-230
Author(s):  
O. P. SINGH ◽  
K. RUPA KUMAR ◽  
P. K. MISHRA ◽  
K. KRISHNA KUMAR ◽  
S. K. PATWARDHAN

Lkkj & bl 'kks/k&i= esa HkweaMyh; tyok;q ifjorZu ds ifj.kkeLo:i 'krkCnh ds e/; ¼2041&60½ ds nkSjku ,f’k;kbZ xzh"edkyhu ekulwu ds fof’k"V y{k.kksa dk iwokZuqeku djus ds mÌs’; ls vuqdj.k iz;ksxksa ds ifj.kke izLrqr fd, x, gSaA blds fy, gSMys tyok;q iwokZuqeku vkSj vuqla/kku dsUnz] ;w- ds- dk {ks=h; tyok;q ekWMy gSM vkj- ,e- 2 dk mi;ksx fd;k x;k gSA ,f’k;kbZ {ks= ds fy, 20 o"kksZa dh vof/k ds nks vuqdj.k iz;ksx fd, x, gSa uker% igyk] 1990 Lrjksa ds vuq:i xzhu gkml xSl lkanz.k dh fu/kkZfjr ek=k] ftls dUVªksy ¼lh- Vh- ,y-½ iz;ksx dgk x;k gS vkSj nwljk 1990 ls ysdj 2041&60 rd ds fy, xzhu gkml xSl lkanz.k ds okf"kZd feJ.k esa 1 izfr’kr dh o`f) lesr ftls vkxs xzhu gkml xSl ¼th- ,p- th-½ iz;ksx dgk x;k gSA xzhu gkml xSl lkanz.k esa okf"kZd feJ.k esa 1 izfr’kr dh o`f) tyok;q ifjorZu ds var% ljdkjh iSuy vkbZ- ih- lh- lh- }kjk rS;kj dh xbZ ;kstuk ls yh xbZ gSA bu iz;ksxksa ls 'krkCnh ds e/; ds nkSjku ,f’k;kbZ xzh"edkyhu ekulwu esa ik, tkus okys fof’k"V y{k.kksa esa gksus okys dqN ifjorZuksa dk irk pyk gS ftudk c<+s gq, ekuotfur mRltZdksa ds dkj.k gksuk LokHkkfor gSA lewph ekulwu _rq ds nkSjku Hkkjrh; {ks= ij fuEu {kksHk eaMy ¼850 gSDVkikLdy½ esa ekulwu nzks.kh ¼,e- Vh- ½ dk mRrj dh vksj lkekU; :i ls c<+uk lcls vf/kd egRoiw.kZ ifjorZu izrhr gksrk gSA vuqdj.k ifj.kkeksa ls ekulwu _rq ds nkSjku vjc lkxj esa leqnz Lrj nkc ¼,l- ,y- ih-½ esa yxHkx 1&2 gS- ik- dh o`f) dk irk pyk gS ftlds ifj.kkeLo:i fuEu {kksHk eaMy esa vlkekU; izfrpØokr gksrs gSaA bldk vFkZ ;g gqvk fd fuEu Lrjh; tsV ¼,y- ,y- ts-½ vkSj vjc lkxj esa ekulwu dh /kkjk det+ksj iM+ tkrh gSA ;g ekWMy m".krj leqnz lrg dh fLFkfr;ksa esa fgan egklkxj ds mRrj esa ekulwuh pØokrh; fo{kksHkksa dh vko`fr esa deh dks vuqdfjr djrk gS tks gky gh ds n’kdksa esa ekulwu ds vonkcksa dh vko`fr esa deh dh izo`fr;ksa ds vuq:i ikbZ xbZ gSA bu iz;ksxksa ls ;g irk pyrk gS fd ikfdLrku vkSj mlds lehiorhZ mRrjh if’peh Hkkjr ds Åij Å"ek fuEunkc rhoz gks ldrk gS vkSj ekulwu _rq           ds nkSjku FkksM+k iwoZ dh vksj c<+ ldrh gSA ;g ekWMy] Hkkjrh; leqnz ds nf{k.kh Hkkxksa esa 8° & 10° m- ds chp 100 gS- ik- ¼Vh- bZ- ts- dksj dk Lrj½ ij fo’ks"kdj ekulwu ds iwokZ)Z ds nkSjku m".kdfVca/kh; iwokZfHkeq[kh tsV¼Vh- bZ- ts-½ dks izHkkfor djrk gSA The paper presents the results of simulation experiments aimed at predicting the characteristic features of Asian Summer Monsoon during the middle of the century (2041-60) resulting from global climate change. The model used is HadRM2 regional climate model of the Hadley Centre for Climate Prediction and Research, UK. Two simulation experiments of 20 years length have been performed for the Asian domain, namely, one with a fixed amount of greenhouse gas concentration corresponding to 1990 levels called the 'control' (CTL) experiment and the other with the annual compound increase of 1 % in the greenhouse gas concentration for 2041-60 from 1990 onwards called the 'greenhouse gas' (GHG) experiment. The annual compound increment of 1 %, in the greenhouse gas concentration has been adopted from the projection given by the Intergovernmental Panel for Climate Change (IPCC). The experiments have brought out some of the changes in the characteristic features of mid-century Asian summer monsoons that are expected to occur due to increased anthropogenic emissions. The most significant change seems to be a general northward shift of the monsoon trough (MT) in the lower troposphere (850 hPa) throughout the monsoon season over the Indian region. The simulation results have shown an increase of about 1-2 hPa in the sea level pressure (SLP) over the Arabian Sea during the monsoon resulting in an anomalous anticyclone over there in the lower troposphere. This would mean the weakening of Low Level Jet (LLJ) and the Arabian sea branch of the monsoon current. The model has simulated a decrease in the frequency of the monsoonal cyclonic disturbances over the north Indian Ocean under the warmer sea surface conditions which conforms to the observed decreasing trends in the frequency of monsoon depressions in recent decades. The experiments have shown that the Heat Low over Pakistan and adjoining northwest India, may intensify and shift slightly eastward during the monsoon. The model has simulated the strengthening of Tropical Easterly Jet (TEJ) at          100 hPa (the location of TEJ core ) over the southern parts of Indian sea between 8° - 10° N, especially during the first half of the monsoon season.


2011 ◽  
Vol 24 (1) ◽  
pp. 267-285 ◽  
Author(s):  
Hiroki Tokinaga ◽  
Shang-Ping Xie

Abstract Ship-based measurements of sea surface wind speed display a spurious upward trend due to increases in anemometer height. To correct this bias, the authors constructed a new sea surface wind dataset from ship observations of wind speed and wind wave height archived in the International Comprehensive Ocean–Atmosphere Data Set (ICOADS). The Wave- and Anemometer-based Sea surface Wind (WASWind) dataset is available for wind velocity and scalar speed at monthly resolution on a 4° × 4° longitude–latitude grid from 1950 to 2008. It substantially reduces the upward trend in wind speed through height correction for anemometer-measured winds, rejection of spurious Beaufort winds, and use of estimated winds from wind wave height. The reduced global upward trend is smallest among the existing global datasets of in situ observations and comparable with those of reanalysis products. Despite the significant reduction of globally averaged wind speed trend, WASWind features rich spatial structures in trend pattern, making it a valuable dataset for studies of climate changes on regional scales. Not only does the combination of ship winds and wind wave height successfully reproduce major modes of seasonal-to-decadal variability; its trend patterns are also physically consistent with sea level pressure (SLP) measurements. WASWind is in close agreement with wind changes in satellite measurements by the Special Sensor Microwave Imagers (SSM/Is) for the recent two decades. The agreement in trend pattern with such independent observations illustrates the utility of WASWind for climate trend analysis. An application to the South Asian summer monsoon is presented.


Author(s):  
Maria I. Akilina ◽  
Margarita Y. Dvorkina

The article is devoted to the 90th birth anniversary of E.A. Fenelonov, the prominent figure of library construction, scientist-librarian and the Honored worker of culture of the RSFSR. The authors present his biographical data, data on the most important stages of his life and activity: study at the Moscow State Library Institute, postgraduate study, defence of the dissertation thesis “Organization of library service for rural population”, leadership of the newly organized library of the Lipetsk region; work as the Head of Department (then Division) of libraries of the Ministry of Culture of RSFSR, the Head of the Main information-computing centre for culture and arts of the Ministry of Culture of RSFSR, the Deputy Director for scientific and methodical work of the V.I. Lenin State Library of the USSR (nowadays — the Russian State Library, RSL), the research scientist in the Research Department of the RSL. The paper describes the general characteristic features of his administrative activity and scientific creativity. The authors emphasize his role in the centralization of the library network, creation of depository libraries, introduction of open access and computers in the librarianship, participation in the development of the “Regulations on Librarianship in the USSR” (1984), the laws “On Librarianship”, “On the Legal Deposit Copy of Documents”, etc. The paper considers the main works of E.A. Fenelonov, dedicated to the management of librarianship, comprehensive planning of library construction, economic efficiency of libraries, organization of the library network, library zoning, activities of the centralized library systems, methodical work of libraries. The authors reveal the personality of E.A. Fenelonov as organizer, manager, scientist and person.


2021 ◽  
Vol 13 (2) ◽  
pp. 151-160
Author(s):  
Marina V. Podkhomutnikova ◽  

104 years ago the Civil War began in Russia. Civil War 1917–1922 is one of the largest civil wars in human history. She had a great influence on the course of not only Russian, but also world history in the XX century. In the conditions of the socio-economic catastrophe experienced by the country at that time, all social and political contradictions in society exacerbated, which gave the Civil War mass character and duration. Today the topic of "decossackization" remains very relevant and in demand. The scientific relevance of the problem of decossackization is caused by the lack of generalizing studies. Currently, there is a significant amount of literature, which reflects the history of civil confrontation in Russia. Literature was created at different times and, as a result, differed in different methodological positions. The Civil War in Russia was studied, seen, reflected from two opposite sides – from the side of the victors and from the side of the vanquished. Difficult times do not have unambiguous assessments and interpretations. It is no coincidence that this period is included in the list of the so-called “difficult questions of history”. Soviet historians began to deal with the problem of decossackization in the 60s. 20th century. Within the framework of what was permitted, researchers could talk about the problems associated with the policy of decossackization in Russia. In the Soviet period, "decossackization" was understood as the elimination of the Cossacks as a socio-ethnographic community in general, characteristic features, characteristics, properties, signs of the Cossacks. In different historical periods, the term "decossackization" was understood as the abolition of class benefits and hardships. In the second half of the 19th – early 20th century. there was no oppression, persecution, destruction and violent influence on the Cossacks at that time. In the late 80s. – the beginning of the 90s. the problem of decossackization is closely associated with the repressive policy of the Bolsheviks in the Cossack regions of the country. From this we can conclude that two different meanings are put into the conventional term “decossackization”. One interpretation of this term speaks of the formal, administrative abolition of the estate rights and obligations of the Cossacks as a social-class category. Another interpretation is about purposeful and large-scale repressive actions against the Cossacks. Today, scientific discussions about the causes, nature and consequences of the anti-Bolshevik struggle during the Civil War continue. More and more researchers are being drawn into the polemical space. The author does not pretend to cover the entire array of publications, the total number of which is several hundred, we will focus on the most general trends in the analysis of the events of the Civil War and armed uprisings against the policies of the Bolsheviks in 1917–1922. The hypothesis of the study is that the overwhelming majority of armed uprisings against the Bolshevik policy in Soviet Russia in 1917–1922. were of a local nature, without going beyond a certain territory, and also were not coordinated in time. The defeat of the anti-Bolshevik uprisings was influenced by: the insurrectionary movement was not homogeneous in goals, slogans, composition; the spontaneous nature of performances at the initial stage; lack of an organizing center; focus on intra-regional problems; superiority in the strength of the Red Army; territorial fragmentation. The movement against the policy of the Bolsheviks, in spite of its scale, as a result remained local, tied to their native farms, villages, villages. According to the author of the article, the scientific novelty of the research lies in the identification and study of the features of the military-political confrontation in the context of the "small Civil War" in the south of Russia.


MAUSAM ◽  
2021 ◽  
Vol 22 (1) ◽  
pp. 59-66
Author(s):  
N.S. BHASKARA RAO ◽  
M.V. DEKATE

The convective activity along the west coast of India in the southwest monsoon season has some characteristic features, the reasons for which could not be given earlier. The observed features of convective weather over Bombay in this season show that they do not fall into the general pattern found in other areas of the tropics. A study of the thermodynamic conditions reveal that these features cannot be explained in terms of the observed instability. On the other hand, these features could be explained in terms of the environmental wind field.


Author(s):  
Olena M. Markova ◽  
◽  
Daria V. Androsova ◽  
Olha V. Muravska ◽  
Liliia V. Nieicheva ◽  
...  

The relevance of the study of the historical hermeneutics of musical styles is determined by the need to find a philosophical basis for changing the cultural paradigm and the desire to return classical canons to musical art in particular. The aim of the work is to analyse the characteristic features of the interpretation of musical styles in accordance with the principles of historical hermeneutics on the example of jazz music. The research was conducted in two stages on the basis of interdisciplinary, systematic and hermeneutical approaches using general scientific methods of cognition: analysis, synthesis, systematization, comparison and ascent from the abstract to the concrete. In the process of scientific research, the views of researchers on the interpretation and understanding of hermeneutics in the context of musical art were considered; a general characteristic of the hermeneutics of musical styles in accordance with historical and philosophical prerequisites was given; the main elements of the theoretical model of musical philosophy of interpretation, which include critical interpretation, the purpose of interpretation, compatibility with description and limitation by requirements were described; the author’s concept of interpretation of musical styles, formed at three levels, were proposed; the characteristics of the hermeneutics of jazz style, in particular the presence of musical improvisational discourse, historical duality, transcendentality of content and form, advertising integration are determined; the article summarizes the specifics of jazz in accordance with two components: the European harmonic system and the fret principles of blues intonation, which made it possible to identify and generalize the theory of interpretation of jazz in the historical and philosophical paradigm. The practical value of scientific work consists in providing a comprehensive hermeneutical base of jazz style in order to further improve the practical application of musical style by teachers, students, musicians and specialists in the field of musical art.


2016 ◽  
Vol 16 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Rajendra Man Shrestha ◽  
Azaya Bikram Sthapit

The main aim of the study was to identify the temporal variation of rainfall in the Bagmati River basin, Nepal using  data available at Department of Hydrology and Meteorology, Government of Nepal. The time series data for the  period of 1981-2008 were analyzed by using non-parametric Mann-Kendal test, Spearman’s’ Rho and a parametric  linear regression. The results showed that there was a significantly increasing upward trend of the annual mean of  weighted areal rainfall, with a rate of 2.2 mm per year. Trend analysis of the monthly time series of weighted areal  rainfall showed a significant upward trend in the months of summer monsoon season (June and July). However,  there were no such significant result in the other season/months. The increasing trend in the summer monsoon  might lead to severe flooding in future.Nepal Journal of Science and Technology Vol. 16, No.1 (2015) pp. 31-40


ICONI ◽  
2020 ◽  
pp. 79-96
Author(s):  
Elena A. Savitskaya ◽  

The article is devoted to the interaction and correlation of such concepts as art rock and progressive rock in the terminological vocabulary of rock music. They both describe a rather unordinary stylistic direction of rock music which both turns to academic “classical” music and at the same time expands the compositional expressive means of rock music aimed at synthesis and experiment. The terms “art rock” and “progressive rock” (just as the musical trend itself) appeared in the British and American press in the late 1960s, however the boundaries between them have remained rather vague. The author of the article examines the history of the emergence, existence and signification of the terms “art rock” and “progressive rock” in the musical literature of Russia and other countries, specifies their meanings, and also turns to the appropriate terminology, styles and genres. The conclusion is arrived at about a more universal and generalizing meaning of the concept of “progressive rock,” which may be comprehended as a “stylistic conglomerate,” the “sum” of numerous stylistic varieties, the general characteristic features of which is the directedness towards stylistic synthesis, a complexification of expressive means and musical form, as well as the overcoming of the customary boundaries of rock music.


2017 ◽  
pp. 63-76
Author(s):  
Nattapon Mahavik

Rainfall intensity and frequency are important parameters in agricultural development and water resource management. The middle of the Indochina peninsula climate is characterized by rainfall variability associated with complex terrains. The present study focuses on spatial seasonal extreme precipitation trends over the middle of the Indochina Peninsula for the 30 year period from 1978-2007. Daily gridded precipitation data obtained at 0.5° horizontal grid resolution from APHRODITE (Asian Precipitation-Highly Resolved Observational Data Integration Towards Evaluation of Water Resources) was used to detect the spatial trends with the use of the Man-Kendall and Theil-Sen approach. Extreme precipitation indices were selected from the WMO–CCL/CLIVAR list of extreme precipitation indices focusing on intensity and frequency. The study shows a consistently increasing upward trend at 10.04 dfrom the WDAY index. In seasonal analysis, the pre-monsoon trend shows a significant upward trend in the PRCTOT index, while the WDAY index for pre-monsoon season has the highest correlation coefficient in downward trend. Spatial analysis of extreme precipitation indices shows that the PRCTOT index of the pre-monsoon season has the largest percentage change in significant upward trend over the northern Basins that are consistent with MAX and Mean but not for WDAY. In addition, the inter-annual relationship between the Oceanic Nino Index and PRCTOT is shown in relation with the La Niña phase for both April and May.


Author(s):  
Natalia A. Volkova ◽  
Olga V. Kataeva ◽  
Marina A. Khodanovich

The constant increase in the number of publications containing the term “humanitarian” in the title, the subject and methodological diversity of these works testify to the formation of the sphere of humanitarian knowledge, including not only traditional Humanities (cultural studies, literary studies, philology, linguistics, etc.), but also philosophical, transdisciplinary, methodological, popular science and even pseudo-scientific texts. All this literature needs to be systematized.Meanwhile, the literature on various aspects of humanitarian sphere in the system of Library Bibliographic Classification (LBC) is scattered in different sections. In part, it can be found in the sections of philosophy, epistemology and philosophical anthropology, in part it can be placed in cultural studies, in the philosophy of science. In addition, there are texts that are difficult to classify basing on the existing dividing.The term “humanitarian” did not immediately begin to be used in compilation of LBC Schedules that is largely due to the lack of clear differentiation of social and humanitarian knowledge. Until now, there are different traditional approaches in literature in considering their correlation. In our opinion, the trends towards their increasingly clear differentiation are quite clear. Therefore, the determination of the place for literature in the humanitarian sphere in the LBC Schedules is becoming more and more important. According to the authors’ opinion, it would be logical in front of the row of the Humanities to single out the section “Humanities as a whole”, which would head the LBC sector “Culture. Science. Education”. The authors suggest putting here the literature on General characteristic features of humanitarian knowledge, its role in spiritual culture, philosophical and cultural reflections on the humanitarian sphere. Publications in which researchers are trying to implement a new synthesis of the Humanities would also find their place here. The section may include literature on humanitarian knowledge, its structure, features and functions in society. An important feature of the development of the humanitarian sphere is the development of problems of practical application of humanitarian knowledge. Literature on digital Humanities, humanitarian informatics, humanitarian technologies and humanitarian expertise will also be reflected in this section.


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