Scientific Investigations Report 2006–5043
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5043
Table 5. Comparison of monthly Bowen-ratio and Lower Colorado River Accounting System evapotranspiration rates, 2002–03.
[Bowen-ratio rates in bold. Units are in feet. ET station: SC, saltcedar; MV, mixed vegetation; AW, arrowweed; station installed on December 18, 2002.Acronym: LCRAS, Lower Colorado River Accounting System; ET, evapotranspiration; ET o , reference ET. Symbol: –, data not available]
| ET station and LCRAS group | Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2002 | |||||||||||||
| SC | – | – | – | – | – | 0.59 | 0.63 | 0.58 | 0.46 | 0.22 | 0.05 | 0.04 | – |
| sc_high | 0.10 | 0.14 | 0.23 | 0.46 | 0.71 | .91 | .84 | .80 | .61 | .34 | .17 | .04 | 5.35 |
| MV | – | – | – | – | – | .41 | .44 | .39 | .25 | .17 | .07 | .06 | – |
| ms/aw | .10 | .14 | .24 | .46 | .66 | .80 | .74 | .71 | .54 | .35 | .20 | .04 | 4.98 |
| sc/ms/aw | .10 | .14 | .25 | .50 | .75 | .96 | .86 | .83 | .63 | .35 | .18 | .04 | 5.59 |
| AW | – | – | – | – | – | – | – | – | – | – | – | – | – |
| aw | .10 | .14 | .22 | .41 | .63 | .82 | .76 | .72 | .55 | .33 | .19 | .04 | 4.91 |
| low_veg | .10 | .15 | .24 | .41 | .58 | .71 | .66 | .63 | .48 | .31 | .20 | .05 | 4.52 |
| ET o | .29 | .43 | .52 | .62 | .69 | .83 | .76 | .73 | .56 | .39 | .39 | .17 | 6.38 |
| 2003 | |||||||||||||
| SC | 0.04 | 0.05 | 0.12 | 0.26 | 0.51 | 0.62 | 0.50 | 0.52 | 0.42 | 0.36 | 0.09 | 0.04 | 3.53 |
| sc_high | .11 | .08 | .18 | .41 | .72 | .86 | .80 | .72 | .71 | .40 | .09 | .04 | 5.12 |
| MV | .07 | .08 | .17 | .25 | .34 | .40 | .33 | .24 | .22 | .17 | .06 | .06 | 2.39 |
| ms/aw | .11 | .08 | .20 | .41 | .66 | .76 | .71 | .63 | .63 | .41 | .10 | .05 | 4.75 |
| sc/ms/aw | .11 | .08 | .20 | .44 | .76 | .91 | .85 | .76 | .75 | .48 | .11 | .05 | 5.50 |
| AW | .04 | .06 | .11 | .20 | .37 | .40 | .41 | .32 | .18 | .14 | .08 | .04 | 2.35 |
| aw | .11 | .08 | .17 | .37 | .63 | .77 | .72 | .65 | .64 | .39 | .09 | .05 | 4.67 |
| low_veg | .11 | .09 | .19 | .36 | .58 | .67 | .63 | .56 | .56 | .37 | .10 | .06 | 4.28 |
| ET o | .32 | .25 | .40 | .55 | .69 | .78 | .73 | .65 | .65 | .47 | .20 | .21 | 5.90 |
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