Disasters caused by heavy rainfall associated with quasi-stationary line-shaped mesoscale
convective systems (MCSs) frequently occur in Japan. Thus, highly accurate quantitative …

Abstract Meso-γ-scale (2–20 km) local heavy rain (LHR) can cause fatalities through the
sudden rise of rivers and flooding of roads. To help prevent this loss of life, we developed …

A method of estimating the propagation delay between two remote sites using a wireless
communication module that is compatible with IEEE 802.15. 4g is proposed. In our previous …

A dual-wavelength locking technique for coherent 2-µm differential absorption lidar (DIAL)
applications has been developed for simultaneously measuring water vapor (H_2O) and …

The knowledge garnered in environmental science takes a crucial part in informing decision-
making in various fields, including agriculture, transportation, energy, public health and …

Timing signal delay difference with subsampling period resolution is achieved by spectrum
spreading using a pseudo-random sequence generator and fitting the cross-correlation …

The degree of reception of BS signals is affected by various factors. After routinely recording
it at two observation points at two locations, we found that momentary upward and …

An integral part of our environment in addition to the surface of the Earth is the adjacent part
of the atmosphere, the lower layer of the troposphere. This part of the troposphere has …

The number of flood events was 2935 and the about a half of million people lives lost due to
flood in the world during 1993-2002 (EM-DAT: International disasters database, 2003) and …

Hydrometeors (rain, fog and ice crystals) affect the transmission of electromagnetic signals.
Previous research showed that alterations in the signal (amplitude and phase) are affected …