9 13 186 O +15 8 0 0:115 15 C-10\ -12 9 6 046 -18 10 048 15 -6 0 -34 -2.°0' 50°N 234 10 15 198 -6 -24 9 25 .5 18 0 054 12 054 9 3 4 19 13 976 3° 19 7 2Q 073 16 0 +5 21 046 2 +3✓ 9 1 21 888 19 972 2 ** 1 ** -1 V 16 6 15 0 17 3: 092 421 42 ** 982 0 \ b +2 12 0 19 10 0 062 1804322 25860 3 +3√ 3 **• -7 22 12 27 818. 2 +15/ 24 4 30 863 34 29 8163 -10 136 19 092 5/8 ** -43 21 995 63x 19 8 16 24 0843/4 ** 14 A 1/2-28 22 (11 17/18 362136 400-26 31 044 34 26 34 9482 • 33 082 84329 335-35 25 872 1/2 24 882 37 2 V -20' 30 16 34 904 32 54 3,0 32839 5 34 925 27 79 797 31 -10 33 +21✓ 28 1 34 31 31 52 38 94454 981 -3171 512-160. 6 ••• 36 48 56 951 6-45 8 31 81 40°N 115 -311\ 7. 238 3 0 950' $53 821 27/20 23/ +2240:964 28 26 010 +45 5 33 921 32 27° 54 957 958 10 8 +3✓ 22 974 10 11 3/4 ** 18 1 +2√ 28 886 +3√37 969°° 25 126 \** 937 +8✓ +11 ✓ 24 0 10 +17 26 0 10. 44 989 +43 ✓ 10 54 4055 -45\ 21 0% 37:17 $970 25069 +9✓ 10 +2√ 17 +9 +4 22 0 33..950 2 0 17 31 950 +536 977 38 020 -221 60 28 971 23 10 +10 +2853 990 10 $18 +10° 25 21° 27 10 +44 ✓ 39002 39 24 Ο 23 091 10 +7✓ 10 30 054 19 30 030 36 994 10 O+4/10 +13✓ 10 +15 ✓ 38 003 +3 66 974 016 -15\ 21 10 +25✓ 20 19 10 25 62 81 3.8 027 57 011 71 012 36 072 -7 10 FI 10 +53/ 9 -2\ 30 091 33 071 10 +810 -+13 ✓ 14: 19 10 22 33 040 +2✓ 25 10 34 056 10 +2 +25 48 94 66 30 28 23 -5\ 36 082 28 10 24 112 5 34 072 $9092 10 10 +11✓ 24 -1 V 13 39 066 10 10 Ⓒ +18 / 42 078 10 0 +45 62 15 55 057 +4 36 072 27 40 099 10 25 7 O-5\ 23 10 O +20 32 +2742 15 60 061° 10 +47% 56 24 66.043 73 082 +23✓ -41 68 30°N 37:107 47 101 100+23 38 42 096 10 O +14 41 120 25 38 093 10 Q +6 28 O +11✓ 63 075 61 58 75 118 32 59-094 M +18 ✓ 70 10 +26 10 +22 ✓ 10 3111 b +4√ 50 108 47.78 8 40 112 9 10 O +20✓ 28 10 34 9 72 104 +15 ✓ 28 120 10 ⚫O +12 ✓ 10 43 12410 38 124 10 8 +9√ 22 10 +8 35 44 129 O.+8√ 39 55 10... 32 62 096 +27/ 65 093 +30✓ 49 71 09 098 1 +21/ 69 +21 75 122 € 74 111 71° 6 +17 ✓ 71 5143 64 118 M +8 / 51 124 50 12710 078 43 10: +12 380 29 4/66 110 72 086 M +6✓ +12 ✓ 55 115 90°W 10 100°W 50 7+2√ 705098 NM 100 200 79 072 +8✓ 74 True at 40.00N 400 300 76 116 4 +15✓ 72 73 11 500 2 Q+8 80°W/n Print (or copy and paste) the surface weather map below (and on the Moodle site) on the next page, and analyse your copy by drawing isobars, isotherms (, high- and low-pressure centers, airmasses, and fronts. I recommend doing two diagrams. The first with the isobar drawn on and the second with the isotherms, fronts, centres and air masses on. You can hand draw, photograph and upload the diagrams or draw on the copied diagram with using your favourite graphics package. If either of these is not possible then please talk to Martin in the session. I found drawing isotherms every 10°F and isobars every 1kPa worked well and if you need to remind yourself on the symbols the look in chapter 9 of Stull. There are enough clues on the map to establish if you are in the northern hemisphere of southern. 13 186 9 b+15 8 0 12 054. 34 13.976 10 6 046 048 -34 50°N 234 -21 15 25 236 9 18 0 21 995 163 19 8 19 092 5/88-43 16 24 084/414 1/2-2829 11 17 18 40°N 115 20 073 7 +5 16 0 21 046 2-3 17 3 19 972 1---1\ 15 19 092 4 10 0 +2 16 04322 982 12 0 19 24 062 10 11 25 069 10 +2 17 23 091 100+7 10 -71 -5\ 22 974 3/4 +2√ 21 888 16 6 25 860 3--+3√√ 27 797 3-16-7 24 4 22 12 27 818. 2 +15/ 23 8 18 1 25 937 126 99 +8 6+4/22 0 17 30 054 10 +4/10 19 30 091 33 071 10 +810 +13 14 19 25 872 1/2 30 24 882 37 30 32 839 3--10\ 28 1 34 9482 31 044 34 33 0625 843 29 35-3538 32 54 31 52 16 34 904 5343 925 33-+21 34 31 30 863 34 911 -10 +36 950 27 20 +2240964 26 010 32 27 29 8163 3---426 0 23 3 28 5-- 21 28 886 4+11 21 0: 31 950 10+10 21 17 33 921 10 3 37 969 24 0 10 26/0 33.-950 10+536 977 23 10 25 39 002 +37 38 03 15 10' 251 +45, 44 989 10 +43 37:17 38 020 510+28 27 38 94 54981 36 48 51 160. 56 95 6-46\ 6- 53 821 45 54 9257 958 310 54 4045 53 990 10 +44 39 24 66 974 10 +25 62 81 28 971 10 18 30 030 +13 10 20 36 994 19 33 040 10 +2 22 38 027 101 25 3 34 056 10 10 +2/ 23 36 072 28 36 082 57 011 10 +53 +25 10 +18 28 39 066 34072 10 48 94 55 057 42 078 10450 970 -221 67 016 4-15 V 363 21 71 12 9-2 66 30 66043 62/15 73 082 +23 -4^ 68 doing two diagrams. The first with the isobar drawn on and the second with the isotherms, fronts, centres and air masses on. You can hand draw, photograph and upload the diagrams or draw on the copied diagram with using your favourite graphics package. If either of these is not possible then please talk to Martin in the session. I found drawing isotherms every 10°F and isobars every 1 kPa worked well and if you need to remind yourself on the symbols the look in chapter 9 of Stull. There are enough clues on the map to establish if you are in the northern hemisphere of southern. 13 186 9 +15 0 -12 0:115 -10 6 046 18 048 -60 50°N 234 10 -21 15 -6 12 054 3 4 976 20 073 7--+5 16 0 21 046 2-3 17 3: 19 092 4 19 972 1---1\ 15 0 16 04322 982 21 888 2- 25 860 3-+3 22 12 27 818. 12 0 19 10 0 21 062 10 +3 11 25 069 10 +2 17 3/4 -- 25 872 1/230 21 995 163 19 8 34 31 19 092 5/8-43 16 24 084/4-14 1/2-28 29 11 17 18 136 31 044 34, 2641 115 34 948233 082531\ 8443 29 35-3538 32 54 882 37 16 6 20 30 27 797 32 839 3--10 28 1 16 34 904 5343925 33-+21✓ 3--7 24 4 2 +15, 23 8 29 8163 3---426 0 23 3 30 863 34 911 +36 950 27 20 28 33 921 +2240964 010 +45 32 27 10 22 974 +2 25 937 +8 28 886 4+11 21 0: 18 1 26 99 6+4/22 0 17 5-- 21 44 989 10. +43 37:17 337 969 24 0 10 17 ...26 0 33.-950 +536 977 38 020 23 10 +510" 25 39 002 +3 28 971 31.95010' 10 +10 18 23 091 10 10 +7 30 054 +4/10 19 30 030 +13 20 10 -7\ -5\ 30 091 33 071 10 +810 +13✓ 14: 19 39 092 24 112 10 b+11 10 -1V 13 5 34 072 24 10 +10/ 21 36 994 10 15 10° 19 39 066 10 10 +436 072 27 70-5 23 31 52 38 9454987 471 6-1 36 48 51160. 56 951 6-46\ 53 82 54 9257 958 310-45\ 54 40545 63 94 970 -22 +2853, 990 10 +44 39 24 2 66 974 10 +25 62 81 57 011 10 60 67 016 4-15\ 263 21 71 012 9-2V +53 66 30 48 94 55 057 66 043 10 +23 42 078 10 +45 10 +27/42 15 62 15 60 061 10 47 56 24 40°N 73 082 -4 68 30°N 38 003 25 38 027 10 36 072 33 040 25 34 056 10 +25 10 +2 10 +27 28 22 23 36 082 10 +18 28 40 099 25 10 +20 A 32 47 101 10 +23 42 096 10 25 30 111 10 +4 9 41 120 100+22 28 120 10 0 +12✓ 10 +20 38 124 10 0 +9√ 43 12410.+8 104839 35 +14 38 093 10 Q+6√ 28 37:107 10 +11 32 38 50 108 59 094 10 +26. 47. 63 075 5 61 75 118 Ⓒ +18 70 40 112 10 72 104 28 55 44 129 10.. 62 096 32 +27/ 65 093 49 71 09 +30 1+21 22 74 111 25 143 +21 75 122. 6 17 71 64 118 +8/ 51 124 50 12710 08 43 10: +12/38 29 66 110 +6 55 115 10 +2 100°W 70 50 098 NM 72 086 +12 90°W 79 072 +8/ 76 16 74 +15 72 100 200 True at 40.00N 73 113 300 400 500 +8 80°W A maritime Polar airmass Initially has a temperature of 10°C and a relative humidity of 100%. The air mass moves from the Pacific eastwards across the Olympic, Cascade and Rocky Mountains picture below. Use a Skew T Log Thermo-diagram for the ABL (on the Moodle page) to find temperature, T, dewpoint temperature, Td and relative humidity, RH at 1 Olympic Mtns. (elevation = 1000 m), 2 Puget Sound (0 m), 3 Cascade Mtns (1500 m), 4 the Great Basin (500 m), 5 Rocky Mtns (2000 m), 6 the western Great Plains (1000 m). Look in Chapter 12 of Stull if stuck. Report your answers in the table below. ≈2 index Location Z T/°C Td/˚C RH/% /km Pacific 0 0 10 10 100 Ocean Olympic 1 1 Mountains Puget 2 0 Sound Cascade 3 Mountains 1.5 index Location Z T/°C Td / °C RH/% /km Pacific 0 0 10 10 100 Ocean Olympic 1 1 Mountains Puget 2 0 Sound Cascade 3 Mountains 1.5 Great 4 0.5 ..... Basin Rocky 5 2 Mountains Great 6 1 Plains occasional rainy rains dry damp heavy rains dry Olympic Cascade Mtns Mtns Rocky Mountains Pacific Puget Great Great Ocean Sound Basin Plains 0 1 2 3 4 5 6