Units

Unit

Description

Degrees (angle from true north)

%

Percentage

£

Pound Sterling

Bn

Billion

°C

Degrees Centigrade

cd

Candela

CD

Chart Datum

cm

Centimetre

cm/s

Centimetres per second (speed)

CO2e

Carbon dioxide equivalent

dB

Decibel (sound)

ft

Feet (distance)

g

Gram

GT

Gross Tonnage (Volume)

GW

Gigawatt (power)

Ha

Hectare

Hrs

Hours

Hz

Hertz (frequency)

In

Inch

kg

Kilogram

kg/m3

Kilograms per Cubic Metre (suspended sediment concentration equivalent to grams per litre)

kHz

Kilohertz

kJ

Kilojoule

km

Kilometres (distance)

km2

Square kilometres

kn

Knot

kV

Kilovolt

kW

Kilowatt (power)

kWh

Kilo Watt hour

l

Litre

m

Metre (distance)

m2

Square metres

m3

Cubic metres (volume)

m/d

Metres per day (rate of change)

m3/d/m

Cubic metres transported per day per metre width of transport path (i.e. perpendicular to direction of transport)

mG

Milligauss

mg

Milligram

mg/kg

Milligram per kilogram

mg/kg DW

Milligram per kilogram dry weight

mg/l

Milligrams per litre (concentration)

m/h

Metres per hour (rate)

m3/h

Cubic metres per hour (discharge rate)

mm

Millimetre (distance)

m/m

Percent by mass

m/s

Metres per second (speed)

m/s2

Metres per second squared

Mt

Mega tonnes/Million tonnes

MV/m

Millivolt per Metre

MW

Megawatt (power)

MWh

Megawatt hours

nm

Nautical mile (distance)

nm2

Square Nautical Mile

nm/s

Nano Metres per Second

nT

Nanotesla (magnetic flux density)

s

Second

t

Tonne

TWh

Terawatt Hours

µg

Microgram

µg/m3

Micrograms per Cubic Meter of Air.

μm

Micrometre

µPa

Micropascal

µPa2s

Micro Pascal Squared Second

µT

Microtesla

μV/m

Microvolts per Metre

V/m

Volts per Metre

W

Watt

References

Department of Energy and Climate Change (2011). Overarching National Policy Statement for Energy (EN-1). Available at: 1938-overarching-nps-for-energy-en1.pdf (publishing.service.gov.uk). Accessed on: 13 September 2021.

Highways Agency, Transport Scotland, Welsh Government and the Department for Infrastructure (2020). Design Manual for Roads and Bridges (DMRB): LA104 – Environmental Assessment and Monitoring. Available at: https://www.standardsforhighways.co.uk/dmrb/search/0f6e0b6a-d08e-4673-8691-cab564d4a60a. Accessed on: 17 September 2021.

IEMA (2020). Major Accidents and Disasters in EIA: A Primer. Available at: Major Accidents and Disasters in EIA: An IEMA Primer. Accessed on: 16 September 2022.

IEMA (2022). Assessing Greenhouse Gas Emissions and Evaluating their Significance. 2nd edition.

MCA (2021). Marine Guidance Note 654 (Merchant and Fishing) safety of Navigation: offshore Renewable Energy Installations (OREIs) – Guidance on UK Navigational Practice, Safety and Emergency Response. Southampton: MCA

Royal Yachting Association (RYA) (2005). Identifying recreational cruising routes, sailing and racing areas within the SEA 6 Area. A Report for the Department of Trade and Industry.

Scottish Government (2014). Scottish Planning Policy. Available at: https://www.gov.scot/publications/scottish-planning-policy/.

Scottish Government (2020). EU Exit: The Habitats Regulations in Scotland. Available at: eu-exit-habitats-regulations-scotland.pdf (www.gov.scot). Accessed on: 11 January 2022.

Scottish Natural Heritage (2014). Natura Casework Guidance: How to consider plans and projects affecting Special Areas of Conservation (SACs) and Special Protection Areas (SPAs).