Short-term desalination of Pulicat lagoon (Southeast India) due to the 2015 extreme flood event: insights from Land-Ocean Interactions in Coastal Zone (LOICZ) models

Ecological Processes

Table 1 The variables used in the construction of LOICZ budget as per the modelling guidelines detailed in Gordon Jr. et al. (1996)

Parameter	Definition	Units	Model inputs	Source
A	Surface area of the lagoon	10⁶ m²	312	Landsat imagery survey
D	Depth of the lagoon	m	1.6	Direct field measurements
V	Volume of the lagoon	10⁶ m³	499.2	Calculation using area and depth
V _P	Precipitation volume	10⁶ m³ period⁻¹	358.57 ± 0.0012	GPM Level 3 IMERG Final Daily 10 × 10 km from the half-hourly GPM_3IMERGHH data
V _Q	Riverine runoff flow volume	10⁶ m³ period^− 1	370 ± 0.0012	Obtained from flow accumulation model
S _sys	Mean system salinity of Pulicat	psu	12.265 ± 0.1	Direct field measurements
S _OCN	Mean system salinity of Bay of Bengal	psu	34 ± 0.29	Argo float data from International Argo Program and Argo Data Products for Indian Ocean (Geetha et al. 2011)
S _Q	Salinity of riverine runoff	psu	0.5 ± 0.1	Direct field measurements