On his father's side he is the fourth generation in Jerusalem – his great-grandfather came to Israel from Slonim-Russia in 1867 and was a teacher (Melamed, in Hebrew) in the Hurva Synagogue in the Old city.

[3] After his release from the IDF he began his Ph.D. studies at the Hebrew University of Jerusalem, during which he built his own meteorological model, which successfully explained the typical summer afternoon storms over the Sea of Galilee (Lake Kinneret).

[5] Alpert's research group is engaged in theoretical studies and observations of the dynamics of atmospheric processes, using hydro-dynamical models for numerically solving the development of different phenomena.

The atmospheric models applied by Alpert are of three different types: The first is used for study of weather forecasting difficulties, and investigating phenomena such as rain, cyclone genesis, winds, etc.

The third type of models focuses on aerosols in the atmosphere, with emphasis on mineral dust mainly from the Sahara and the Middle-East region, as well as sea-salt particles, and their effect on weather and climate.

In 2009 his book "Rain and Wind – meteorology in light of Judaism" (in Hebrew גשם ורוח – מטאורולוגיה בראי היהדות) was published by Rubin Mass press.

In this book Alpert analyses weather phenomena appearing in Jewish literature, provides modern scientific explanations, and ties the literary descriptions to common situations in the climate of Israel.

The book reproduces the historic journal written by Alpert‘s uncle during the British Mandate, when he served as a ”muchtar", or head of neighborhood, in north Jerusalem.

Alpert was the first Israeli to be awarded the Vilhelm Bjerknes Medal by the European Geosciences Union for 2018, in recognition of his achievements in the field of Atmospheric Sciences.