DefinePK

Abstract

Water vapour has a great importance in understanding climate change, weather forecasting and also important weather forming elements of the troposphere. A limiting error source in geodetic measurement is unmodelled electrical path delay from atmospheric water vapour. To rebuild a spatially determined humidity fields in the troposphere a GNSS water vapour topography structure is established. GPS has a utility of precise 3-D positioning. With quick growth and widespread use of GPS equipment, developing the perceptible water vapour of troposphere from the information gathered by the GPS which became innovatively noticeable technology. To get precise information and derive perceptible water vapour so as to offer better services, proper operation technique is required. We discussed in this paper about the change in water vapour over the region in South India where heat wave has occurred.