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Monday, July 13, 2020 | History

3 edition of Harmonic analysis of normal pentad rainfall of Indian stations found in the catalog.

Harmonic analysis of normal pentad rainfall of Indian stations

Ananthakrishnan, R.

Harmonic analysis of normal pentad rainfall of Indian stations

by Ananthakrishnan, R.

  • 58 Want to read
  • 27 Currently reading

Published by Ramdurg House in Pune .
Written in English

    Places:
  • India.
    • Subjects:
    • Rain and rainfall -- India,
    • Harmonic analysis

    • Edition Notes

      StatementR. Ananthakrishnan and J.M. Pathan.
      SeriesContributions from the Indian Institute of Tropical Meteorology., 035
      ContributionsPathan, J. M.
      Classifications
      LC ClassificationsQC925.5.I47 A49 1981
      The Physical Object
      Pagination35 p. :
      Number of Pages35
      ID Numbers
      Open LibraryOL2569130M
      LC Control Number85111829

        We have used the total monthly average precipitation for the harmonic analysis. Harmonic Analysis. Harmonic analysis is commonly used to study periodic variations that can represent the fluctuations or variations in a time series as having arisen from adding together a series of sine and cosine functions [6,23]. The average annual rainfall of the Amaravathi basin estimated from the 33 years () precipitation data of 10 rain gauge station is mm. It is evident from the Fig 2 that the highest annual rainfall was mm in and the lowest one was mm in

      data gap was filled up by the rainfall data of a neighboring rain-gauge station. We have considered districts for the present analysis. Each of these districts of the country has two or more representing stations. First of all, the district rainfall is calculated as the arithmetic average of rainfall data of stations in the district. Thus.   Based on the rainfall analysis, the researchers found that between and , 64 districts (%) show an increasing trend of annual rainfall, whereas 85 districts (%) show a .

      constructed using the monthly rainfall data for the period – of fixed network of rain gauge stations. In the new network, on an average, there is one rain gauge station for every Sq km area. The new rainfall series is temporally as well as spatially homogenous. Linear trend analysis was carried out to examine the long-term. The average rainfall in India is cm according to annual data from the Meteorological Department. The following is the distribution of rainfall in India: Extreme Precipitation regions: Northeastern regions and the windward side of the Western ghats experience an average of cm of annual rainfall.


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Harmonic analysis of normal pentad rainfall of Indian stations by Ananthakrishnan, R. Download PDF EPUB FB2

"Inflation In Food Articles: Causes And Analysis Of Factors During The Post Crisis Period In India" Dynamics of Demand for Rainfall Index Insurance: Evidence from a Commercial Product in India Self Help Group: A Potential Tool For Financial Inclusion.

Regional and interannual variations of the rainy season over Indonesia are investigated using daily rainfall data during Pentad-mean rainfall data, with a relatively better continuity have been obtained for 46 stations, and the annual and semi-annual cycles of rainfall at these stations have been objectively analyzed by harmonic by:   Statistical Year Book India ; RAINFALL; RAINFALL - Statistical Year Book India Monthly (Actual) Rainfall: Monthly (Actual And Normal) Rainfall: Annual rainfall: Download Reports.

National Sample Survey Reports. Statistical Publication Open Government Data Platform India Public Grievances Election Commission. The seasonality of pentad-mean precipitation for each cluster is shown in Fig. The summer rainy season can be seen in all clusters around pentad number 33 (P33) (10–14 Jun) to P50 (3–7 Sept).

The largest peaks of the pentad rainfall in CL1, CL3, CL4, CL6, and CL7 were observed in the summer monsoon season (Fig. 3a, c, d, f, gCited by: 5.

The investigation of GHA intraseasonal climate variability is based on pentad rainfall, and, in order to associate any given year with ENSO–IOD, we employ two simple index time series of Niño-3 and the Indian Ocean dipole using the Global Sea Ice and Sea Surface Temperature (GISST) dataset (Rayner et al.

Both indices use a base period Cited by: pentad rainfall were calculated separately for the north and south coasts. Pentad area-averaged rainfall time series were inspected and rainfall onset peak and end dates derived as per Table 1.

Fig. Time series of normalised station rainfall anomalies for a) north part (4–8 S) of coast MAM season, b) north. (above normal, normal and below normal) by calculating different verification scores used for the verification of probability forecast.

The distribution of observed cate- gories of above normal, below normal and normal rain- fall over India in each month from June to September is determined by using the observed monthly rainfall series -forecast.

New DelhiIndia Diurnal variation of rainfall of different intensities using self-recording raingauge data of about sta-tions spread across India is presented here. Analysis of annual average number of rainfall hours revealed that the highest number (>) is realized over north-east India, followed by west coast (–).

This study investigates the seasonal march patterns of rainfall in the Philippines from to and their long-term variability. In order to clarify the dominant patterns in the seasonal march of rainfall, an empirical orthogonal function (EOF) analysis was applied to pentad rainfall data of 30 stations.

For the first EOF mode (EOF1), we obtained a pattern related to the summer rainy season. As part of the Global Precipitation Climatology Project (GPCP), analyses of pentad precipitation have been constructed on a ° latitude–longitude grid over the globe for a yr period from to by adjusting the pentad Climate Prediction Center (CPC) Merged Analysis of Precipitation (CMAP) against the monthly GPCP-merged analyses.

Rainfall in June, July and September decreased, whereas in August it increased, at the national on Kumar, V., Jain, S. & Singh, Y. () Analysis of long-term rainfall trends in India.

Rainfall data. In response to an RTI petition filed by the South Asia Network on Dams, Rivers and People, the Indian Meteorological Department (IMD) has made rainfall data for the past few years available at a monthly level, for each district of the country on their website. India Water Portal has imported all the data from into a spreadsheet that you can download and save for.

obtained for 46 stations, and the annual and semi-annual cycles of rainfall at these stations have been objectively analyzed by harmonic analysis.

The onset of southern-hemispheric spring/summer (SON/. For our analysis, we produced CMIP6 pentad data with the nonoverlapping 5‐day averages of a subset of 16 CMIP6 models available for analysis. For our analysis, we use the historical simulations and SSP2– experiments of these 16 models as well as reanalysis data (Table S1 in the supporting information).

(normal) map prepared by the India Meteorological Department (IMD) on the basis of about 3, rain gauge stations for the period (Rao,IMD, ). This shows that the rainfall stations selected in this study are adequately representative.

received average rainfall of mm. for the the pentad rainfall over India during monsoon sesons Indian Journal of Meteorology andGeophysics. [7] Mankar G. (): A sudy of rainfallcharacteristics of Analysis of short periodrainfall in Dry Farming Tract in India. Map showing average annual rainfall (centimeters) in India.

Map showing average annual rainfall (centimeters) in India. Maps of India - India's No. 1 Maps Site. hourly rainfall such as, average number of rain hours in a year, empirical probability distribution functions have also been examined.

Analysis indicates, many stations in India have recorded more than 10 cm of rainfall in an hour’s duration. Vectors of the first harmonic fits to the month E1 Nino-hydroclimate composites. the analysis of rainfall data from to ). Fig. 3 shows, as an example, the month E1 Nino compo- site and the first harmonic fit for rainfall data at Flinders, Tasmania.

The stations such as Laoag, Dagupan, and Iba are located on the leeward side during the winter monsoon season and have very little rainfall (the average monthly rainfall in these stations from to is less than 1 mm day −1).

Baguio station, on the other hand, shows a robust signal since it is in an elevated location (~ m). Month Observed Rainfall (mm) Normal Rainfall (mm) % Departures from Normal JUNE % JULY % AUGUST 1% SEPTEMBER 12% SW – MONSOON -7% Figure 2: All India Rainfall - Monsoon Figure 3: % Departures - All India Rainfall.

(b) Power spectrum analysis of the pentad-to-pentad precipitation area-averaged over Taiwan during the period of March to Februaryextracted from the CWB data (dash line) and the IMERG data (solid line).

The smooth lines added in (b) indicate the related 95% confidence interval. Understanding of rainfall is an important issue for Uttarakhand, India which having varied topography and due to that extreme rainfall causes quick runoff which warns structural and functional safety of large structures and other natural resources.

In this study, an attempt has been made to determine the best-fit distribution of the annual series of rainfall data for the period of –