Table 1 Measurement sites. “SZA” refers to the solar zenith angle at the moment of the measurement while “distance” refers to the distance between the measurement site and the center of the closest MODIS data grid.

From: Evaluation of MODIS-derived estimates of the albedo over the Atacama Desert using ground-based spectral measurements

Site

Latitude (º)

Longitude (º)

Date (dd/mm)

Time (UTC-3) (hh:mm)

SZA (o)

Elevation (m)

Distance (m)

Águila

− 18.4429

− 69.8929

29/09

16:10

42.2

1655

153

Wilka

− 18.4937

− 70.1126

29/09

14:00

17.4

907

260

Huara

− 19.9937

− 69.7528

30/09

11:50

29.7

1111

3370

Pozo Almonte

− 20.2655

− 69.7508

30/09

12:30

22.6

1031

240

Pica

− 20.5668

− 69.4733

30/09

13:30

17.6

1042

282

Huatacondo

− 21.1721

− 69.5597

30/09

14:35

24.3

789

100

María Elena

− 22.2207

− 69.5965

28/09

14:00

21.4

1164

238

Calama

− 22.4302

− 68.8725

28/09

12:20

25.9

2357

182

San Pedro

− 22.5762

− 68.7030

28/09

11:25

35.7

2583

220

Proyecto Gen

− 23.5643

− 70.2297

27/09

15:55

40.8

575

100

Aguas Blancas

− 24.0897

− 69.9284

27/09

11:45

34.0

968

166

Pampa Norte

− 25.5121

− 70.1761

26/09

16:05

43.9

1250

253

Pampa Sur

− 25.7451

− 70.3683

26/09

15:00

32.1

888

213

El Salvador

− 26.2864

− 69.6482

26/09

12:05

32.3

2059

235

Inca de Oro

− 27.0346

− 69.9107

25/09

14:40

30.7

1696

234

Genpac

− 27.4886

− 70.3798

25/09

13:25

26.6

766

272

Los Loros

− 27.8618

− 70.1832

25/09

11:40

38.1

1560

201

Valleland

− 28.1214

− 70.6103

24/09

14:20

29.5

485

249

El Romero

− 29.1274

− 70.9282

24/09

12:45

31.0

1150

177

Vicuña

− 30.0617

− 70.7660

23/09

15:30

40.3

640

138