Atmoswater Research Blog by Roland Wahlgren

#Libya #Water-from-Air Resource Charts

31/12/2013

Libya location map (with latitude and longitude). Click to enlarge.

Important environmental issues in Libya are water scarcity, arable land availability, desertification, and oil development and pollution (UNEP, 2013, Arab Region Atlas of Our Changing Environment). Can water-from-air technology address the water scarcity issue?

Water-from-air Resource (WFAR) Resource Charts are available for three sites in Libya. These sites represent two climate zones. Operating conditions by month for atmospheric water generators range from unreliable to excellent depending on site latitude, elevation, distance inland from the Mediterranean Sea, and season. Please see the charts for details.

The table below ranks the sites from highest to lowest WFAR Annual Index. The coastal site of Darnah is suitable for year-round effective operation of water-from-air systems even though the water-from-air resource grade ranges from fair to excellent. In contrast, coastal Tripoli and inland Sabha will have periods of unreliable operation during the low sun season. Hourly water production analyses would be useful for better understanding the feasibility of water-from-air system operation at these sites.

Site

Elevation

Climate
(Main climates | Precipitation | Temperature)

Water-from-Air Resource Annual Index

Darnah
Tripoli
Sabha

9 m
81 m
440 m

0.79
0.69
0.50

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#Atlas of the #Water-from-Air Resource for #China

31/12/2013

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Sample page from the Atlas of the Water-from-Air Resource for China

Sample page from the Atlas (click to enlarge).

The water-from-air resource for China is presented as a series of monthly colour-shaded maps. The resource is graded as being excellent, good, fair, or poor. The grading is based on specific humidity data at the 1000 mb pressure level. The data is from the USA’s National Oceanic and Atmospheric Administration. The grading system for the maps is designed to be compatible with the grading system used on the Water-from-Air Resource Charts issued by Atmoswater Research for various sites.

These maps offer a quick survey of the water-from-air resource in China. Decisions about deployment of water-from-air systems should also include knowledge from monthly models (suitable for tropical regions with monthly grades consistently ‘good’ to ‘excellent’) and hourly models (essential for temperate regions with variable monthly grades).

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#Morocco #Water-from-Air Resource Charts

12/12/2013

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Morocco location map (with latitude and longitude). Click to enlarge.

Water-from-Air Resource (WFAR) Charts are available for four sites in Morocco. These sites represent three different climate zones.Operation conditions by month for atmospheric water generators range from unreliable to excellent depending on site latitude, elevation, distance from the Atlantic Ocean, and season. Please see the charts for details.

The table below ranks the sites from highest to lowest WFAR Annual Index. The coastal sites of Rabat and Casablanca have a good water-from-air resource allowing year-round effective operation of water-from-air systems.

At the higher elevation inland sites of Marrakech and Aguerdi, the water vapour resource in the low sun season decreases to the point where water-from-air systems will have unreliable water production during some periods. Hourly water production analyses are useful for better understanding the feasibility of water-from-air system operation at the inland cities.

Site

Elevation

Climate
(Main climates | Precipitation | Temperature)

Water-from-Air Resource Annual Index

Casablanca
Rabat
Marrakech
Aguerdi

61 m
74 m
465 m
449 m

0.78
0.74
0.56
0.55

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#Tunisia #Water-from-Air Resource Charts

11/12/2013

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Tunisia location map (with lat. and long.).

Water-from-Air Resource (WFAR) Charts are available for four sites in Tunisia. Operating conditions by month for atmospheric water generators range from "unreliable" to excellent depending on site latitude, elevation, and season. Please see the charts for details.

The table below ranks the sites from highest to lowest WFAR Annual Index.

Although Gabès and Gafsa are in the same climate zone (arid | desert | hot arid), water-from-air systems will perform better in the moister air of coastal Gabès.

The warm temperate climate of Tunis to the north has a more consistent water-from-air resource through the year than does the arid climate of Sfax to the south.

Tunisia's water-from-air resource exhibits considerable seasonal differences. On balance, the country is a reasonable choice for deployment of water-from-air systems.

Site

Elevation

Climate
(Main climates | Precipitation | Temperature)

Water-from-Air Resource Annual Index

Gabès
Tunis
Sfax
Gafsa

4 m
3 m
22 m
313 m

0.71
0.71
0.68
0.57

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#China #Water-from-Air Resource Charts

9/12/2013

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China location map (with latitude and longitude) showing locations which have available water-from-air resource charts (click on image to enlarge).

Water-from-Air Resource (WFAR) Charts are available for seventeen sites in China. Operating conditions by month for atmospheric water generators range from poor to excellent depending on site latitude, elevation, and season. Please see the charts for details.

The table below ranks the sites from highest to lowest WFAR Annual Index. Generally, water-from-air system performance is better at more southerly sites. Performance is better along the coast than further inland. During the summer months of July and August, when drinking water scarcity is likely to affect people most, water-from-air systems will offer excellent performance except for Hohhot (fair), Taiyuan (good), and Kunming (good).

China appears to be a worthwhile market for drinking-water-from-air technologies. At least three equipment suppliers are based in the country.

Site

Elevation

Climate
(Main climates | Precipitation | Temperature)

Water-from-Air Resource Annual Index

Guangzhou
Nanning
Chongqing
Nanchang
Chengdu
Hangzhou
Shanghai
Nanjing
Kunming
Xi'an
Qingdao
Jinan
Tianjin
Shijiazhuang
Beijing
Taiyuan
Hohhot

7 m
72 m
350 m
49 m
507 m
42 m
7 m
11 m
1891 m
397 m
77 m
57 m
4 m
84 m
54 m
778 m
1064 m

0.99
0.99
0.82
0.80
0.70
0.75
0.75
0.71
0.59
0.59
0.57
0.52
0.51
0.50
0.47
0.42
0.30

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#Libya #Water-from-Air Resource Charts

#Atlas of the #Water-from-Air Resource for #China

#Morocco #Water-from-Air Resource Charts

#Tunisia #Water-from-Air Resource Charts

#China #Water-from-Air Resource Charts

Roland Wahlgren

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