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Scottish Transport Statistics: No 26 - 2007 Edition

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Table 6.13 Emissions of greenhouse gases by type of transport allocated to Scotland 1

1990

1995

1998

1999

2000

2001

2002

2003

2004

2005

thousand tonnes of Carbon Dioxide equivalent

Transport 2

Road transportation 3

9,165

9,347

9,838

9,702

9,811

9,796

10,097

10,145

10,264

10,334

Buses

414

385

340

314

298

291

295

310

297

306

Passenger cars

5,792

5,784

6,052

6,028

6,129

6,091

6,266

6,159

6,180

6,084

HGVs

1,927

2,056

2,235

2,167

2,169

2,153

2,229

2,287

2,346

2,420

Light duty vehicles

964

1,071

1,159

1,138

1,157

1,191

1,227

1,299

1,352

1,435

Mopeds & motorcycles

46

30

32

34

34

35

37

40

36

38

Other 8

21

21

19

19

24

34

44

50

52

52

Railways

192

182

215

223

226

219

195

209

229

241

National navigation 4

961

857

790

753

721

571

480

750

714

789

Domestic civil aviation 5

333

357

463

510

542

581

600

622

669

714

Other transport 6

517

398

328

321

301

303

313

293

300

294

Total transport

11,168

11,141

11,634

11,510

11,602

11,470

11,686

12,020

12,175

12,372

Non-transport net emissions 7

53,270

51,059

50,732

47,279

49,840

49,508

45,883

45,475

43,162

42,151

Net emissions all sources 7

64,439

62,200

62,366

58,789

61,442

60,978

57,569

57,496

55,337

54,522

percentage

Transport % of Total net emissions 7

17.3

17.9

18.7

19.6

18.9

18.8

20.3

20.9

22.0

22.7

1. From the "Greenhouse Gas Inventories for England, Scotland, Wales and Northern Ireland: 1990 - 2005". Emissions are available annually only with effect from 1998.
2. Estimates of emissions from international shipping, and from international aviation, are not allocated to the countries of the UK. As a result, there are no estimates of their emissions in, around, to or from Scotland.
3. The method used to estimate emissions from road transport is based on vehicle kilometre travelled data constrained so that the sum of emissions across all parts of the UK equates to the total for the UK inventory where that total is derived from fuel sales data of petrol and DERV within the UK as specified in the reporting guidelines of the Intergovernmental Panel on Climate Change. A criticism of this method is that the presentation of results does not always provide a CO2 emission trend that is directly consistent with the vehicle kilometre trend data, as the fluctuations in UK fuel data have a more significant impact on the resultant emission trends. As an alternative, road transport CO2 emissions from the constituent countries of the UK may be estimated solely by vehicle kilometre data unconstrained to the UK total derived from fuel consumption data. In 1990, the estimated CO2 emissions from these two methods agreed closely. However, this agreement has deteriorated during the 1990s, and now the estimated CO2 emissions using the vehicle kilometre approach are approximately 7% greater than those estimated using a fuel sales data based approach. Information provided with the 2005 disaggregated inventory indicated that between 1990 and 2005, while constrained estimates of road transport carbon dioxide emissions increased by 9%, unconstrained emissions increased by 19%. The inventories are7subject to ongoing improvements in data collection and estimation techniques and work will continue with the aim of improving road transport emission estimates.
4. Coastal shipping activity.
5. Scotland's share of emissions from flights which are solely within the UK.
6. Includes emissions from miltary aircraft, aircraft support vehicles, railways stationary combustion and naval shipping.
7. Net emissions take account of removals of carbon dioxide due to Land Use, Land Use Change and Forestry ( LULUCF)
8. Includes LPG and road vehicle engines.

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Page updated: Friday, December 14, 2007