Abolfazl Neyestani

@razi.ac.ir

Department of physics
Razi University

https://researchid.co/neyestani

EDUCATION

PhD in Meteorology

RESEARCH INTERESTS

Numerical weather prediction
Data assimilation
Forecast verification
Wavelet and spectral analysis
Climate variability

Scopus Publications

Scholar Citations

Scholar h-index

Scholar i10-index

Scopus Publications

The relationship between surface pressure and temperature fields over Iran: An approach based on multiple time-scales analysis of NCEP/NCAR reanalysis data

Study of the interrelationship between global climate indices at different time scales

Exploring the possible linkage between the precipitation and temperature over Iran and their association with the large-scale circulations: Cumulative spectral power and wavelet coherence approaches
Abolfazl Neyestani, Khalil Karami, and Siavash Gholami
Elsevier BV

On the design and implementation of digital filters to process meteorological signals

Operational convective-scale data assimilation over Iran: A comparison between WRF and HARMONIE-AROME
Abolfazl Neyestani, Nils Gustafsson, Sarmad Ghader, Ali Reza Mohebalhojeh, and Heiner Körnich
Elsevier BV

Short range precipitation forecasts evaluation of WRF model over IRAN

Planetary and tidal wave-type oscillations in the ionospheric sporadic E layers over Tehran region
K. Karami, S. Ghader, A. A. Bidokhti, M. Joghataei, A. Neyestani, and A. Mohammadabadi
American Geophysical Union (AGU)
[1] It is believed that in the lower ionosphere, particularly in the ionospheric sporadic E (Es) layers (90–130 km), the planetary and tidal wave-type oscillations in the ionized component indicate the planetary and tidal waves in the neutral atmosphere. In the present work, the presence of wave-type oscillations, including planetary and tidal waves in the ionospheric sporadic E layers over Tehran region is examined. Data measured by a digital ionosonde at the ionospheric station of the Institute of Geophysics, University of Tehran, from July 2006 to June 2007 are used to investigate seasonal variations of planetary and tidal waves activities. For the purpose of accurate comparison between different seasons, wavelet transform is applied to time series of foEs and h′Es, namely, the critical frequency and virtual height of Es layers, respectively. The results show that the sporadic E layers over Tehran region are strongly under the influence of upward propagation of waves from below. More specifically, among diverse range of periodicities in the sporadic E layers, we found that diurnal (24 hours) and semidiurnal (12 hours) oscillations in all seasons for both parameters. Moreover, terdiurnal (8 hours) tide-like variation is observed during spring and summer for foEs parameter and summer and winter for h′Es. Furthermore, the results show that diurnal tidal waves obtain their maximum activities during autumn and winter seasons, and their activities decrease during the late spring and summer. In addition, periods of about 2, 4, 6, 10, 14, and 16 days in our observation verifies the hypothesis of upward propagation of planetary waves from lower atmosphere to the ionosphere. Moreover, planetary waves have their maximum activities during equinox.

RECENT SCHOLAR PUBLICATIONS

The relationship between surface pressure and temperature fields over Iran: An approach based on multiple time-scales analysis of NCEP/NCAR reanalysis data
A Neyestani
Journal of the Earth and Space Physics 50 (3), 707-729 2024

Multiple-scale Temporal Variability of Climatic Time Series in the Western Region of Iran
A Neyestani
Sustainable Earth Review 3 (3), 27-44 2023

Study of the interrelationship between global climate indices at different time scales.
A Neyestani
Iranian Journal of Geophysics (IJG) 17 (2) 2023

On the design and implementation of digital filters to process meteorological signals
A Neyestani
Journal of the Earth and Space Physics 48 (2), 361-380 2022

Exploring the possible linkage between the precipitation and temperature over Iran and their association with the large-scale circulations: Cumulative spectral power and
A Neyestani, K Karami, S Gholami
Atmospheric Research 274, 106187 2022

Operational convective-scale data assimilation over Iran: A comparison between WRF and HARMONIE-AROME
A Neyestani, N Gustafsson, S Ghader, AR Mohebalhojeh, H Krnich
Dynamics of Atmospheres and Oceans 95, 101242 2021

Inter-comparison of HARMONIE and WRF model simulations in convective-permitting scale over western area of Iran
A Neyestani, S Ghader, N Gustafsson, A Mohebalhojeh
Iranian Journal of Geophysics 12 (1), 1-18 2018

Application of data assimilation using WRF model to simulate precipitations caused by synoptic systems in the western regions of Iran
A Neyestani, S Ghader, A Mohebalhojeh
Iranian Journal of Geophysics 11 (1), 101-123 2017

Short range precipitation forecasts evaluation of WRF model over IRAN
F Taghavi, A Neyestani, S Ghader
Journal of the EATH AND SPACE PHYSICS 39 (2), 145-170 2013

Evaluation of short-term precipitation forecasts of WRF numerical model in Iran in a one-month period
F Taghavi, A Neyestani, S Qader
Journal of Earth and Space Physics 39 (2) 2013

Spatial and temporal study of precipitation characteristics over Iran.
M Moghbel, M Davoudi, A Neyestani, F Taghavi
2013

Planetary and tidal wave‐type oscillations in the ionospheric sporadic E layers over Tehran region
K Karami, S Ghader, AA Bidokhti, M Joghataei, A Neyestani, ...
Journal of Geophysical Research: Space Physics 117 (A4) 2012

Application of wavelet analysis to investigate precipitation variability at western regions of Iran
F Taghavi, A Neyestani, H Mohammadi, S Rostami Jalilian
Iranian Journal of Geophysics 5 (4), 13-30 2012

Identifying the changes in precipitation regime over Iran during recent decades
M Moghbel, M Davoudi, A Neyestani, F Taghavi
Nivar 35, 55-66 2011

MOST CITED SCHOLAR PUBLICATIONS

Short range precipitation forecasts evaluation of WRF model over IRAN
F Taghavi, A Neyestani, S Ghader
Journal of the EATH AND SPACE PHYSICS 39 (2), 145-170 2013
Citations: 5

Identifying the changes in precipitation regime over Iran during recent decades
M Moghbel, M Davoudi, A Neyestani, F Taghavi
Nivar 35, 55-66 2011
Citations: 5

Evaluation of short-term precipitation forecasts of WRF numerical model in Iran in a one-month period
F Taghavi, A Neyestani, S Qader
Journal of Earth and Space Physics 39 (2) 2013
Citations: 2

Spatial and temporal study of precipitation characteristics over Iran.
M Moghbel, M Davoudi, A Neyestani, F Taghavi
2013
Citations: 1