Glider G7 Thermal Info (Task 8 - Club - 20 July 2018)

Thermal Time Thermal Alt Orbits Speed Orbits Diam Orbit Time Climb Rate Other
ID Type Start
[hms]
End
[hms]
Duration
[hms]
Start
[ft]
End
[ft]
Delta
[ft]
Lost
[ft]
Lost
[%]
Avg
(stab)
[kts]
Min
(stab)
[kts]
Max
(stab)
[kts]
Avg
(stab)
[m]
Min
(stab)
[m]
Max
(stab)
[m]
Avg
(stab)
[sec]
Min
(stab)
[sec]
Max
(stab)
[sec]
Avg
(stab)
[kts]
Min
(stab)
[kts]
Max
(stab)
[kts]
Direction Track
Length
[km]
Count
0All01:03:35249343341.3 %53.620

blah
3.927
1Thermal12:20:1712:21:5400:01:3737434350606132.2 %57
54.4
38.2
53.2
70.5
55.4
147
158
33
150
219
171
16.2
17.8
3
17
23
19
2.9
3.3
-1.3
1.8
5.5
4.9
Right2.86
1Orbit12:20:1712:20:4000:00:233743395621300 %58.10235.5Right0.7
2Orbit12:20:4012:20:5700:00:173956409714100 %540174.9Right0.5
3Orbit12:20:5712:21:1600:00:194097421211400 %54.90193.6Right0.5
4Orbit12:21:1612:21:3400:00:18421243049100 %53.20183Right0.5
5Orbit12:21:3412:21:5100:00:174304435652612.5 %55.40171.8Right0.5
6Orbit12:21:5112:21:5400:00:0343564350-66-100 %66.5003-1.3Right0.1
2Thermal12:22:1612:24:0000:01:444393512773491.3 %54.5
53.9
34.2
52.3
74.6
55.5
155
156
144
153
163
163
17.3
17.8
16
17
19
19
4.2
4.4
1.3
3.1
6.2
5.4
Right2.96
7Orbit12:22:1612:22:3300:00:174393457017700 %56.80176.2Right0.5
8Orbit12:22:3312:22:5000:00:174570472415400 %55.50175.4Right0.5
9Orbit12:22:5012:23:0700:00:174724486514100 %550174.9Right0.5
10Orbit12:23:0712:23:2500:00:184865499312700 %52.60184.2Right0.5
11Orbit12:23:2512:23:4400:00:19499350919800 %52.30193.1Right0.5
12Orbit12:23:4412:24:0000:00:165091512736927.3 %54.90161.3Right0.5
3Thermal12:28:5112:30:2200:01:3141204724603193.3 %51.9
50.9
40
50.1
67
51.6
193
183
181
181
223
186
22.8
22
20
22
27
22
4.1
4.6
1.1
3.8
6.3
5.4
Left2.44
13Orbit12:28:5112:29:1100:00:204120433321300 %55.40206.3Left0.6
14Orbit12:29:1112:29:3300:00:224333453420000 %51.60225.4Left0.6
15Orbit12:29:3312:29:5500:00:224534467514100 %50.10223.8Left0.6
16Orbit12:29:5512:30:2200:00:2746754724491940 %50.40271.1Left0.7
4Thermal12:37:5212:39:1900:01:273270383856700 %50.3
50.2
36
50.1
68.6
50.4
179
177
172
172
187
182
21.8
21.5
21
21
23
22
3.9
3.5
3
3.3
5.6
3.7
Left2.34
18Orbit12:37:5212:38:1300:00:213270346719600 %51.10215.6Left0.6
19Orbit12:38:1312:38:3400:00:213467359913100 %50.10213.7Left0.5
20Orbit12:38:3412:38:5600:00:223599372012100 %50.40223.3Left0.6
21Orbit12:38:5612:39:1900:00:233720383811800 %49.70233Left0.6
5Thermal12:44:1812:46:2000:02:0233234104780131.7 %51.9
51.5
37.5
48.5
74.2
55.4
208
204
173
173
263
263
24.4
24
21
21
29
29
3.8
3.3
2.4
2.4
5.8
4
Left3.35
22Orbit12:44:1812:44:4300:00:253323356924600 %530255.8Left0.7
23Orbit12:44:4312:45:0400:00:213569371014100 %50.40214Left0.5
24Orbit12:45:0412:45:2600:00:223710383812700 %48.50223.4Left0.5
25Orbit12:45:2612:45:5500:00:29383839561181311.1 %55.40292.4Left0.8
26Orbit12:45:5512:46:2000:00:253956410414700 %52.20253.5Left0.7
6Thermal12:48:1812:49:4100:01:233799441261300 %60
56.7
40.8
55.3
74.5
58.3
156
185
23
166
217
217
16.6
20
2
18
24
24
3.7
3.7
1
2.9
6.5
4.2
Right2.45
27Orbit12:48:1812:48:3900:00:213799402822900 %58.20216.5Right0.6
28Orbit12:48:3912:48:5700:00:184028415012100 %58.30184Right0.5
29Orbit12:48:5712:49:2100:00:244150432017000 %55.30244.2Right0.7
30Orbit12:49:2112:49:3900:00:18432044098800 %56.40182.9Right0.5
31Orbit12:49:3912:49:4100:00:0244094412300 %71.60021Right0.1
7Thermal13:10:0513:11:2300:01:182693319249830.7 %54
52.4
39.5
51.4
67.5
53.3
171
202
83
194
210
210
19.5
23.5
9
23
24
24
3.7
3.5
2.8
3.2
4.9
3.8
Left2.14
37Orbit13:10:0513:10:2700:00:222693287418000 %54.80224.9Left0.6
38Orbit13:10:2713:10:5100:00:242874300112732.6 %53.30243.2Left0.7
39Orbit13:10:5113:11:1400:00:233001314914700 %51.40233.8Left0.6
40Orbit13:11:1413:11:2300:00:09314931924200 %56.60092.8Left0.3
8Thermal13:14:3913:17:1900:02:4029004248134860.5 %52.5
52.6
35.5
51.4
67.9
53.9
172
176
141
164
202
202
20
20.5
17
19
24
24
5
5.1
2.1
3.2
7.2
6.1
Right4.38
43Orbit13:14:3913:14:5900:00:202900314324200 %53.30207.2Right0.5
44Orbit13:14:5913:15:1800:00:193143332318000 %53.90195.6Right0.5
45Orbit13:15:1813:15:3700:00:193323352019600 %52.60196.1Right0.5
46Orbit13:15:3713:15:5700:00:203520372320300 %52.60206Right0.5
47Orbit13:15:5713:16:1600:00:193723390418000 %53.20195.6Right0.5
48Orbit13:16:1613:16:3800:00:223904405815400 %520224.2Right0.6
49Orbit13:16:3813:17:0200:00:244058418913100 %51.40243.2Right0.6
50Orbit13:17:0213:17:1900:00:174189424859611.1 %50.80172.1Right0.4
9Thermal13:21:0713:22:1100:01:043851424839661.7 %53.4
53.7
36.8
53.7
66.2
53.7
187
211
169
211
211
211
21.3
24
20
24
24
24
3.6
4.1
3.1
4.1
4.1
4.1
Right1.83
53Orbit13:21:0713:21:2700:00:203851395610466.3 %550203.1Right0.6
54Orbit13:21:2713:21:5100:00:243956412416700 %53.70244.1Right0.7
55Orbit13:21:5113:22:1100:00:204124424812400 %51.50203.7Right0.5
10Thermal13:29:5313:32:3900:02:4628113914110290.9 %54.6
54.2
36.5
53.2
69.2
55.3
185
191
165
166
213
213
20.8
21.5
17
19
24
24
3.9
4
1.7
3.4
5.6
4.8
Right4.78
56Orbit13:29:5313:30:1300:00:202811300119000 %52.40205.6Right0.5
57Orbit13:30:1313:30:3400:00:213001312312100 %53.20213.4Right0.6
58Orbit13:30:3413:30:5300:00:193123325112700 %53.40194Right0.5
59Orbit13:30:5313:31:1500:00:223251338913700 %55.20223.7Right0.6
60Orbit13:31:1513:31:3600:00:213389355917000 %55.30214.8Right0.6
61Orbit13:31:3613:31:5800:00:223559370714700 %54.20224Right0.6
62Orbit13:31:5813:32:2200:00:243707386415700 %54.30243.9Right0.7
63Orbit13:32:2213:32:3900:00:173864391449920 %59.20171.7Right0.5
11Thermal13:37:0313:38:4600:01:4335794488908192.2 %52.5
51.2
37.7
50.2
67.2
51.9
178
173
53
168
316
178
20.6
20.7
6
20
35
21
4.1
5
-1.3
4.1
6.8
5.7
Left2.85
65Orbit13:37:0313:37:3800:00:353579397940000 %55.20356.8Left1
66Orbit13:37:3813:37:5900:00:213979418320300 %50.20215.7Left0.5
67Orbit13:37:5913:38:1900:00:204183435617300 %51.40205.2Left0.5
68Orbit13:38:1913:38:4000:00:214356450114400 %51.90214.1Left0.6
69Orbit13:38:4013:38:4600:00:0645014488-1319-150 %54006-1.3Left0.2
12Thermal13:43:3313:45:0800:01:353313420288900 %51.5
51.9
35.3
50.6
67.2
52.8
160
162
143
156
174
172
19
19
18
18
20
20
5.5
5.1
4.3
4.3
7.9
5.8
Right2.55
70Orbit13:43:3313:43:5300:00:203313357926500 %53.10207.9Right0.5
71Orbit13:43:5313:44:1300:00:203579375017000 %52.40205.1Right0.5
72Orbit13:44:1313:44:3200:00:193750393718700 %50.60195.8Right0.5
73Orbit13:44:3213:44:5000:00:183937406813100 %52.80184.3Right0.5
74Orbit13:44:5013:45:0800:00:184068420213400 %48.70184.4Right0.5
13Thermal13:45:1913:47:2700:02:084284519390800 %55
54.7
38.3
52.5
71.1
56.3
192
202
162
187
231
231
21.3
22.5
17
21
25
25
4.2
4.4
3
4.2
4.6
4.6
Right3.66
75Orbit13:45:1913:45:4000:00:214284444215700 %52.70214.4Right0.6
76Orbit13:45:4013:46:0200:00:224442460316000 %52.50224.3Right0.6
77Orbit13:46:0213:46:2400:00:224603475715400 %55.40224.2Right0.6
78Orbit13:46:2413:46:4900:00:254757495019300 %56.30254.6Right0.7
79Orbit13:46:4913:47:1000:00:214950510815700 %54.50214.4Right0.6
80Orbit13:47:1013:47:2700:00:17510851938500 %58.30173Right0.5
14Thermal13:51:4513:54:3600:02:5140415807176500 %54.5
54
34.7
51.8
73.8
57.3
191
191
168
178
216
216
21.4
21.7
19
19
25
25
6.1
5.9
5.1
5.1
7.2
6.7
Mixed4.88
81Orbit13:51:4513:52:0700:00:224041431126900 %58.10227.2Right0.7
82Orbit13:52:0713:52:2600:00:194311447516400 %57.30195.1Right0.6
83Orbit13:52:2613:52:5100:00:254475472725200 %52.80256Left0.7
84Orbit13:52:5113:53:1200:00:214727493420600 %51.80215.8Left0.6
85Orbit13:53:1213:53:3300:00:214934515021600 %51.90216.1Left0.6
86Orbit13:53:3313:53:5600:00:235150537422300 %53.70235.7Left0.6
87Orbit13:53:5613:54:1700:00:215374561023600 %56.40216.7Left0.6
88Orbit13:54:1713:54:3600:00:195610580719600 %54.10196.1Left0.5
15Thermal14:02:4314:05:1100:02:2835234557103360.6 %54.1
53.8
40.5
52.7
72.1
54.2
219
196
173
173
273
213
24.7
22.3
20
20
30
24
4.1
3.8
3
3.1
6.3
4.7
Mixed4.16
89Orbit14:02:4314:03:1200:00:293523383230800 %57.50296.3Left0.9
90Orbit14:03:1214:03:3600:00:243832400917700 %54.20244.4Left0.7
91Orbit14:03:3614:03:5600:00:204009416615700 %52.70204.7Left0.5
92Orbit14:03:5614:04:1900:00:234166428812132.7 %540233.1Left0.6
93Orbit14:04:1914:04:4100:00:224288440611800 %54.20223.2Left0.6
94Orbit14:04:4114:05:1100:00:304406455715032.2 %52.20303Right0.8
16Thermal14:06:5514:09:3500:02:4042425846160430.2 %54.6
55.1
38.4
54.1
71.2
56
204
195
182
182
249
211
22.9
21.6
20
20
29
23
6
6.2
4.1
5.5
7.3
7.3
Mixed4.57
95Orbit14:06:5514:07:1800:00:234242452428200 %54.70237.3Left0.6
96Orbit14:07:1814:07:4100:00:234524473721300 %560235.5Left0.7
97Orbit14:07:4114:08:0100:00:204737493720000 %55.40205.9Left0.6
98Orbit14:08:0114:08:2300:00:224937517323600 %55.40226.4Left0.6
99Orbit14:08:2314:08:4500:00:225173544627200 %54.40227.3Left0.6
100Orbit14:08:4514:09:0600:00:215446564620000 %54.10215.6Left0.6
101Orbit14:09:0614:09:3500:00:295646584620031.6 %52.50294.1Right0.8
17Thermal14:19:3214:23:3200:04:0036816007232630.1 %55.2
55.5
36.1
52.8
71.6
57.9
155
160
80
147
171
171
17.1
17.7
9
17
19
19
5.6
5.6
2.4
4.9
8.8
7
Right6.814
102Orbit14:19:3214:19:5100:00:193681396328200 %53.10198.8Right0.5
103Orbit14:19:5114:20:0800:00:173963416320000 %52.80177Right0.5
104Orbit14:20:0814:20:2500:00:174163434318000 %52.90176.3Right0.5
105Orbit14:20:2514:20:4300:00:184343452017700 %53.30185.8Right0.5
106Orbit14:20:4314:21:0000:00:174520468116000 %550175.6Right0.5
107Orbit14:21:0014:21:1700:00:174681484216000 %55.20175.6Right0.5
108Orbit14:21:1714:21:3500:00:184842501317000 %57.80185.6Right0.5
109Orbit14:21:3514:21:5300:00:185013520319000 %55.30186.3Right0.5
110Orbit14:21:5314:22:1000:00:175203534714400 %57.70175Right0.5
111Orbit14:22:1014:22:2800:00:185347551116400 %57.70185.4Right0.5
112Orbit14:22:2814:22:4600:00:185511565914700 %57.90184.9Right0.5
113Orbit14:22:4614:23:0500:00:195659582016000 %54.20195Right0.5
114Orbit14:23:0514:23:2300:00:185820597115000 %55.80185Right0.5
115Orbit14:23:2314:23:3200:00:09597160073639.1 %54.30092.4Right0.3
18Thermal14:29:3814:31:3300:01:554274497069500 %58.1
57.8
42.2
57.4
74.7
58.1
273
284
258
273
295
295
28.8
30
26
29
31
31
3.7
3.1
2.7
2.7
5.6
3.5
Left3.44
116Orbit14:29:3814:30:0400:00:264274452024600 %60.60265.6Left0.8
117Orbit14:30:0414:30:3300:00:294520469117000 %57.40293.5Left0.9
118Orbit14:30:3314:31:0400:00:314691483214100 %58.10312.7Left0.9
119Orbit14:31:0414:31:3300:00:294832497013700 %56.40292.8Left0.8
19Thermal14:41:0314:43:4700:02:4431063848741162.2 %55.6
54.2
38.7
51.1
71.8
56.8
183
209
21
184
227
227
20.5
23.5
2
22
25
25
2.4
2.3
0
1.1
5.7
3.4
Left4.68
122Orbit14:41:0314:41:2400:00:213106331020300 %55.60215.7Left0.6
123Orbit14:41:2414:41:4600:00:223310343512400 %54.80223.4Left0.6
124Orbit14:41:4614:42:1100:00:253435356613165 %55.30253.1Left0.7
125Orbit14:42:1114:42:3300:00:22356636589100 %51.10222.5Left0.6
126Orbit14:42:3314:42:5700:00:24365837367800 %520241.9Left0.6
127Orbit14:42:5714:43:2200:00:253736380568914.3 %54.80251.6Left0.7
128Orbit14:43:2214:43:4500:00:23380538484200 %56.80231.1Left0.7
129Orbit14:43:4514:43:4700:00:0238483848000 %640020Left0.1
20Thermal14:45:2214:48:4000:03:1834384685124630.3 %52.1
51.3
35.3
48.6
68.6
52.6
188
185
176
176
202
202
22
22
21
21
24
24
3.7
3.7
2.8
2.9
4.8
4.4
Left5.39
130Orbit14:45:2214:45:4400:00:223438361517700 %54.60224.8Left0.6
131Orbit14:45:4414:46:0500:00:213615376615000 %52.20214.3Left0.6
132Orbit14:46:0514:46:2800:00:233766393717000 %48.60234.4Left0.6
133Orbit14:46:2814:46:5000:00:223937404510800 %50.90222.9Left0.6
134Orbit14:46:5014:47:1100:00:214045418914400 %51.10214.1Left0.6
135Orbit14:47:1114:47:3200:00:214189431712700 %52.20213.6Left0.6
136Orbit14:47:3214:47:5400:00:224317445213400 %52.60223.6Left0.6
137Orbit14:47:5414:48:1800:00:244452458012700 %51.30243.2Left0.6
138Orbit14:48:1814:48:4000:00:224580468510433.1 %55.30222.8Left0.6
21Thermal14:50:3014:52:2200:01:524146471456791.7 %53.7
52.5
37.5
52.4
69
52.5
197
183
163
163
238
198
22.4
21.3
19
19
25
23
2.9
2.4
1.4
2.3
6.1
2.5
Left3.15
139Orbit14:50:3014:50:5500:00:254146440225500 %58.20256.1Left0.7
140Orbit14:50:5514:51:1700:00:22440244949133.6 %52.50222.5Left0.6
141Orbit14:51:1714:51:4000:00:23449445899533.4 %52.40232.5Left0.6
142Orbit14:51:4014:51:5900:00:19458946627200 %52.50192.3Left0.5
143Orbit14:51:5914:52:2200:00:23466247145236.3 %52.80231.4Left0.6
22Thermal14:58:0115:03:4200:05:41348453241840191.1 %51.6
51.4
34.5
48.6
70.3
53.9
192
192
145
175
241
231
22.7
22.8
17
21
28
28
3.2
3.4
0.2
1.9
4.8
4.8
Left9.115
144Orbit14:58:0114:58:2800:00:273484364115700 %54.60273.5Left0.8
145Orbit14:58:2814:58:5000:00:223641377213100 %51.30223.5Left0.6
146Orbit14:58:5014:59:1300:00:233772389111800 %49.50233Left0.6
147Orbit14:59:1314:59:3500:00:223891402213100 %49.60223.5Left0.6
148Orbit14:59:3514:59:5700:00:224022412710400 %48.60222.8Left0.5
149Orbit14:59:5715:00:2500:00:284127423811100 %50.30282.4Left0.7
150Orbit15:00:2515:00:4600:00:214238440917000 %51.80214.8Left0.6
151Orbit15:00:4615:01:0700:00:214409455014100 %50.90214Left0.5
152Orbit15:01:0715:01:2900:00:224550469414400 %51.10223.9Left0.6
153Orbit15:01:2915:01:5100:00:224694483514100 %510223.8Left0.6
154Orbit15:01:5115:02:1500:00:244835498615000 %53.30243.7Left0.7
155Orbit15:02:1515:02:3900:00:244986513114400 %52.90243.6Left0.7
156Orbit15:02:3915:03:0300:00:245131524611400 %53.90242.8Left0.7
157Orbit15:03:0315:03:2500:00:22524653187234.5 %53.70221.9Left0.6
158Orbit15:03:2515:03:4200:00:1753185324616250 %52.10170.2Left0.5
23Thermal15:07:1315:10:2200:03:09452455441020131.3 %52.1
51.6
35.2
49.9
68.9
53.5
179
178
162
162
201
201
21
21
19
19
23
23
3.2
3
1.3
1.9
6.1
4
Left5.19
159Orbit15:07:1315:07:3500:00:224524475022600 %550226.1Left0.6
160Orbit15:07:3515:07:5800:00:234750489114100 %52.80233.6Left0.6
161Orbit15:07:5815:08:1800:00:204891502613400 %49.90204Left0.5
162Orbit15:08:1815:08:3800:00:205026514411800 %50.30203.5Left0.5
163Orbit15:08:3815:08:5900:00:215144525210833 %50.30213.1Left0.5
164Orbit15:08:5915:09:2000:00:21525253378500 %52.10212.4Left0.6
165Orbit15:09:2015:09:3900:00:19533754299100 %52.10192.9Left0.5
166Orbit15:09:3915:10:0200:00:23542955017200 %53.50231.9Left0.6
167Orbit15:10:0215:10:2200:00:205501554442923.1 %52.90201.3Left0.5
24Thermal15:24:2615:27:3200:03:0633304225895131.5 %51.6
51.8
38.5
50.8
64.9
52.4
196
201
169
171
222
222
23.3
23.7
20
20
26
26
2.9
2.6
1.2
1.7
6.3
3.9
Left4.98
170Orbit15:24:2615:24:4600:00:203330354321300 %51.60206.3Left0.5
171Orbit15:24:4615:25:1000:00:243543370015700 %50.80243.9Left0.6
172Orbit15:25:1015:25:3600:00:263700383513432.4 %51.80263.1Left0.7
173Orbit15:25:3615:26:0200:00:263835394310800 %52.10262.5Left0.7
174Orbit15:26:0215:26:2500:00:23394340419800 %52.40232.5Left0.6
175Orbit15:26:2515:26:4500:00:20404141106834.8 %52.20202Left0.5
176Orbit15:26:4515:27:0800:00:23411041766500 %51.50231.7Left0.6
177Orbit15:27:0815:27:3200:00:244176422549613.3 %50.40241.2Left0.6
25Thermal15:34:3915:35:4700:01:08253226731416244.2 %51
50.3
30.4
50.3
69.4
50.3
188
198
179
198
198
198
22.7
24
20
24
24
24
1.3
1.5
-0.1
1.5
2.5
1.5
Right1.83
178Orbit15:34:3915:34:5900:00:20253226188500 %54.50202.5Right0.6
179Orbit15:34:5915:35:2300:00:24261826775935.6 %50.30241.5Right0.6
180Orbit15:35:2315:35:4700:00:2426772673-359-1800 %48024-0.1Right0.6
26Thermal15:36:1415:39:0700:02:5327003280580559.6 %51.4
52.3
37.4
50.1
68.9
55.4
184
202
66
169
280
280
21.6
23.7
9
20
33
33
2
2.2
-0.2
0.1
3.6
3.6
Mixed4.68
181Orbit15:36:1415:36:3600:00:22270027888800 %530222.4Right0.6
182Orbit15:36:3615:36:5700:00:21278828708234 %52.30212.3Right0.6
183Orbit15:36:5715:37:1700:00:20287029568500 %51.50202.5Right0.5
184Orbit15:37:1715:37:3900:00:22295630418533.8 %55.40222.3Right0.6
185Orbit15:37:3915:37:5900:00:203041316212100 %52.70203.6Right0.5
186Orbit15:37:5915:38:2500:00:263162327711400 %50.10262.6Right0.7
187Orbit15:38:2515:38:5800:00:3332773284636550 %51.90330.1Right0.9
188Orbit15:38:5815:39:0700:00:0932843280-313-400 %44.7009-0.2Left0.2
27Thermal15:43:3715:46:2900:02:5222402755515265.1 %51.4
51.7
36.1
49.8
64.9
53.8
161
165
117
150
173
173
19.1
19.6
15
17
21
21
1.7
1.8
-0.3
1.2
3.1
2.5
Right4.69
189Orbit15:43:3715:43:5700:00:202240234510400 %52.90203.1Right0.5
190Orbit15:43:5715:44:1700:00:20234524318500 %50.80202.5Right0.5
191Orbit15:44:1715:44:3600:00:19243125006834.8 %51.50192.1Right0.5
192Orbit15:44:3615:44:5600:00:20250025727200 %51.50202.1Right0.5
193Orbit15:44:5615:45:1600:00:20257226214936.7 %52.80201.5Right0.5
194Orbit15:45:1615:45:3300:00:17262126603938.3 %53.80171.4Right0.5
195Orbit15:45:3315:45:5300:00:20266027195935.6 %51.70201.7Right0.5
196Orbit15:45:5315:46:1400:00:21271927624200 %49.80211.2Right0.5
197Orbit15:46:1415:46:2900:00:1527622755-613-200 %47.8015-0.3Right0.4
Color of the track indicates climb rate
Width of the track indicates ground speed (not air speed)
Pink arrow indicates wind (not always reliable)
Fire indicates thermal source based on wind