The ECN Data Centre

Site Information: Porton Down

Sponsoring organisation(s)

Defence Science and Technology Laboratory

Network(s) this site belongs to
UK Environmental Change Network
UK Environmental Change Biodiversity Network

Site characteristics

Min Altitude 100m

Site boundaries are indicated with a black line.
Click map to enlarge.

Max Altitude 172m
Area of Site 1227ha
Mean annual temperature* 9.8oC
Mean annual rainfall* 806mm
* calculated from the ECN Data Centre database
Information held about this site
View a list of datasets collected at this site
View a list of publications about this site


As well as being a Site of Special Scientific Interest (SSSI), Porton Down is also a Special Area of Conservation (SAC) and a Special Protection Area (SPA) covering over 1500 hectares. It constitutes the largest uninterrupted tract of semi-natural chalk grassland in Britain, a habitat which has declined by more than 80% in the last 50 years. As well as the grassland the site supports large areas of mixed scrub, including juniper, and broadleaved, mixed and coniferous woodland.

Defence Science and Technology Laboratory


Related links

  • This site is part of the COSMOS-UK network. COSMOS (the Cosmic-ray Soil Moisture Observing System UK), is a new network that will deliver real-time weather monitoring and field scale measurements of soil moisture across the United Kingdom.



Sarah Atkinson

Defence Science and Technology Laboratory
Dstl Porton, Porton Down, Salisbury, Wiltshire, SP4 0JQ

  ECN Data Centre ECN for Schools ECN Sponsors

Contact the ECN Data Centre at Policy  |  Privacy and Cookies  
Website design and interface development by Susannah Rennie -