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Long-Short-Term-Memory (LSTM) networks have been used extensively for time series forecasting in recent years due to their ability of learning patterns over different periods of time. In this paper, this ability is applied to learning the…

Signal Processing · Electrical Eng. & Systems 2020-06-30 Mayank Jain , Shilpa Manandhar , Yee Hui Lee , Stefan Winkler , Soumyabrata Dev

In this paper, the Precipitable Water Vapor (PWV) content of the atmosphere is derived using the Global Positioning System (GPS) signal delays. The PWV values from GPS are calculated at different elevation cut-off angles. It was found that…

Atmospheric and Oceanic Physics · Physics 2018-05-08 Shilpa Manandhar , Yee Hui Lee , Yu Song Meng , Feng Yuan , Soumyabrata Dev

With a rapid increase in the number of geostationary satellites around the earth's orbit, there has been a renewed interest in using Global Positioning System (GPS) to understand several phenomenon in earth's atmosphere. Such study using…

Atmospheric and Oceanic Physics · Physics 2018-04-20 Shilpa Manandhar , Soumyabrata Dev , Yee Hui Lee , Yu Song Meng

Precipitable water vapour (PWV) strongly affects the quality of data obtained from millimetre- and submillimetre-wave astronomical observations, such as those for cosmic microwave background measurements. Some of these observatories have…

Instrumentation and Methods for Astrophysics · Physics 2024-02-16 Junna Sugiyama , Haruki Nishino , Akito Kusaka

In recent years, there has been growing interest in using Precipitable Water Vapor (PWV) derived from Global Positioning System (GPS) signal delays to predict rainfall. However, the occurrence of rainfall is dependent on a myriad of…

Atmospheric and Oceanic Physics · Physics 2020-01-08 Shilpa Manandhar , Soumyabrata Dev , Yee Hui Lee , Yu Song Meng , Stefan Winkler

In the search for small exoplanets orbiting cool stars whose spectral energy distributions peak in the near infrared, the strong absorption of radiation in this region due to water vapour in the atmosphere is a particularly adverse effect…

Instrumentation and Methods for Astrophysics · Physics 2021-06-02 E. A. Meier Valdés , B. M. Morris , B. -O. Demory

We here show that dual-band GPS measurements of precipitable water vapor (PWV) at KPNO predict the overall per-image sensitivity of the Mayall z-band Legacy Survey (MzLS). The per-image variation in the brightness of individual stars is…

Instrumentation and Methods for Astrophysics · Physics 2020-10-28 W. M. Wood-Vasey , Daniel Perrefort , Ashley Baker

In this paper we present the first results ever obtained by applying the autoregressive (AR) technique to the precipitable water vapour (PWV). The study is performed at the Very Large Telescope. The AR technique has been recently proposed…

Instrumentation and Methods for Astrophysics · Physics 2020-09-02 A. Turchi , E. Masciadri , P. Pathak , M. Kasper

We present a Python package, pwv_kpno, that provides models for the atmospheric transmission due to precipitable water vapor (PWV) at user specified sites. Using the package, ground-based photometric observations taken between $3,000$ and…

Instrumentation and Methods for Astrophysics · Physics 2019-01-23 Daniel Perrefort , W. M. Wood-Vasey , K. Azalee Bostroem , Kirk Gilmore , Richard Joyce , Charles Corson

Astronomical observations at millimeter and submillimeter wavelengths heavily depend on the amount of Precipitable Water Vapor (PWV) in the atmosphere, directly affecting the sky transparency and degrading the quality of the signals…

Instrumentation and Methods for Astrophysics · Physics 2026-01-27 Alison Matus-Bello , Silvia E. Restrepo , Ricardo Bustos , Yi Hu , Fujia Du , Jaime Cariñe , Pablo García , Javier Maldonado , Rodrigo Reeves , Zhaohui Shang

The High Energy Stereoscopic System (H.E.S.S.) site and the Gamsberg Mountain have been identified as potential sites for the Africa Millimetre Telescope (AMT). The AMT is poised to observe at millimetre and possibly at submillimetre…

Instrumentation and Methods for Astrophysics · Physics 2025-05-09 Lott Frans , Michael Backes , Heino Falcke , Tiziana Venturi

Precipitable water vapor (PWV) is an important climate parameter indicative of available moisture in the atmosphere, it is also an important greenhouse gas. Observations of precipitable water vapor in sub-Sahel West Africa are almost…

After 30 years since the beginning of the Global Positioning System (GPS), or, more generally, Global Navigation Satellite System (GNSS) meteorology, this technique has proven to be a reliable method for retrieving atmospheric water vapor;…

Atmospheric and Oceanic Physics · Physics 2024-01-23 Javier Vaquero-Martinez , Manuel Anton

Current global precipitation estimates from spaceborne precipitation radars are limited by their sensitivity to light and frozen precipitation, leading to systematic underestimation of precipitation at high latitudes. Because passive…

Atmospheric and Oceanic Physics · Physics 2026-05-11 Simon Pfreundschuh , Christian D. Kummerow

We validate the Weather Research and Forecasting (WRF) model for precipitable water vapour (PWV) forecasting as a fully operational tool for optimizing astronomical infrared (IR) observations at Roque de los Muchachos Observatory (ORM). For…

Instrumentation and Methods for Astrophysics · Physics 2018-05-02 Gabriel Pérez Jordán , Julio A. Castro Almazán , Casiana Muñoz Tuñón

Air temperature is an essential factor that directly impacts the weather. Temperature can be counted as an important sign of climatic change, that profoundly impacts our health, development, and urban planning. Therefore, it is vital to…

Applications · Statistics 2021-10-27 Hewei Wang , Muhammad Salman Pathan , Yee Hui Lee , Soumyabrata Dev

Time-variable absorption by water vapor in Earth's atmosphere presents an important source of systematic error for a wide range of ground-based astronomical measurements, particularly at near-infrared wavelengths. We present results from…

Instrumentation and Methods for Astrophysics · Physics 2017-12-20 Dan Li , Cullen H. Blake , David Nidever , Samuel Halverson

The accurate prediction of precipitation is important to allow for reliable warnings of flood or drought risk in a changing climate. However, to make trust-worthy predictions of precipitation, at a local scale, is one of the most difficult…

Computation · Statistics 2021-02-26 Sherman Lo , Peter Watson , Peter Dueben , Ritabrata Dutta

Time series forecasting is an active research topic in academia as well as industry. Although we see an increasing amount of adoptions of machine learning methods in solving some of those forecasting challenges, statistical methods remain…

Computation · Statistics 2021-01-26 Edwin Ng , Zhishi Wang , Huigang Chen , Steve Yang , Slawek Smyl

Owing to the growing concern of global warming and over-dependence on fossil fuels, there has been a huge interest in last years in the deployment of Photovoltaic (PV) systems for generating electricity. The output power of a PV array…

Applications · Statistics 2018-07-18 Soumyabrata Dev , Tarek AlSkaif , Murhaf Hossari , Radu Godina , Atse Louwen , Wilfried van Sark
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