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Aa¨vq 3<br />
Rjevqy cwieZ©‡bi<br />
cÖfve, <strong>Awf‡hvRb</strong> I SzuwK<br />
3.1 Rjevqyi ZviZg¨ I<br />
cwieZ©‡bi GKwU wPÎ<br />
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<strong>Kg©</strong>kvjvq Rvbv‡bv n‡q‡Q †h, e„wócvZ I ZvcgvÎvi<br />
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I cvwbi cÖvc¨Zvi Ici e„wócvZ I ZvcgvÎvi<br />
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B‡Zvg‡a¨ evsjv‡`‡ki A‡bK GjvKvq my¯úófv‡e<br />
cwijw¶Z n‡”Q|<br />
3.1.1 cwijw¶Z<br />
cwieZ©bmg~n<br />
cÖvß Dcv‡Ë †`Lv †M‡Q †h, el©v †gŠmy‡g (Ryb, RyjvB I<br />
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m‡e©v”P I me©wbgœ ZvcgvÎvi evwl©K n«vm I e„w×i nvi<br />
0.001 wWwMÖ †mjwmqvm I 0.016 wWwMÖ †mjwmqvm<br />
(ingvb Avjg: 2003)| Av‡iv Rvbv †M‡Q †h, 1998<br />
mvj wQj MZ 30 eQ‡i me‡P‡q Dò eQi|<br />
mvK© AvenvIqv M‡elYv †K›`ª (GmGgAviwm)<br />
1961-90 mv‡ji †gqv‡` gvwmK I evwl©K m‡e©v”P<br />
Rangpur: Annual Average of Maximum Temperature<br />
y = 0.0356 x + 28.989<br />
R2 = 0.2226<br />
Z_¨ wPÎ 8 iscyi †K‡›`ª m‡e©v”P ZvcgvÎvi evwl©K Mo cÖeYZv<br />
m~Î: ingvb m¤úvw`Z, 2007<br />
Z_¨ wPÎ 9 iscyi †K‡›`ª me©wbgœ ZvcgvÎvi evwl©K Mo cÖeYZv<br />
m~Î: ingvb m¤úvw`Z, 2007<br />
I me©wbgœ ZvcgvÎv Ges gvwmK I evwl©K e„wócv‡Zi<br />
wfwˇZ f~-c„‡ôi Rjevqy NwUZ DcvË wb‡q mgx¶v<br />
Pvwj‡q‡Q| mgx¶vq †`Lv †M‡Q †h, wKQy †gŠmy‡g<br />
m‡e©v”P I me©wbgœ ZvcgvÎvq e„w×i cÖeYZv Ges<br />
Ab¨vb¨ †gŠmy‡g n«v‡mi cÖeYZv cwijw¶Z n‡q‡Q|<br />
20 <strong>RvZxq</strong> <strong>Awf‡hvRb</strong> <strong>Kg©</strong>-<strong>cwiKíbv</strong><br />
AvMó 2009<br />
30.50<br />
30.00<br />
29.50<br />
29.00<br />
28.50<br />
28.00<br />
27.50<br />
27.00<br />
21.00<br />
20.50<br />
20.00<br />
19.50<br />
19.00<br />
18.50<br />
18.00<br />
17.50<br />
17.00<br />
16.50<br />
1978<br />
1980<br />
1982<br />
1984<br />
1986<br />
1988<br />
Average Linear (Average)<br />
1990<br />
1992<br />
1994<br />
1996<br />
1998<br />
2000<br />
2002<br />
Rangpur: Annual Average of Mimimum Temperatur e<br />
y = 0.0273 x + 19.606<br />
R 2 = 0.118<br />
1978<br />
1980<br />
1982<br />
1984<br />
1986<br />
average Linear (average)<br />
1988<br />
1990<br />
1992<br />
1994<br />
1996<br />
1998<br />
2000<br />
2002