tag:blogger.com,1999:blog-7478606652950905956.post6292168718760567677..comments2023-01-31T15:32:03.349-08:00Comments on Cliff Mass Weather Blog: The "Dark Storm" Continue into Saturday But is Now AbatingCliff Mass Weather Bloghttp://www.blogger.com/profile/13948649423540350788noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-7478606652950905956.post-73709881187942488442019-12-24T22:19:33.912-08:002019-12-24T22:19:33.912-08:00Correction: The value is likely an underestimation...Correction: The value is likely an underestimation due to the concave down curve.Friendhttps://www.blogger.com/profile/16113544345441368032noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-8193367139644306122019-12-24T21:55:42.590-08:002019-12-24T21:55:42.590-08:00For comparison, the sunniest day of the month at m...For comparison, the sunniest day of the month at my location was 12/15 on which I measured approximately 3MJ/m^2. There was nearly 1MJ/m^2 on the sunniest hour (1-2PM) of that day.Friendhttps://www.blogger.com/profile/16113544345441368032noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-70210962487614585652019-12-24T19:34:21.732-08:002019-12-24T19:34:21.732-08:00P.S.
I used the trapezoidal rule to estimate thi...P.S.<br /> <br />I used the trapezoidal rule to estimate this value which, as such, is likely an overestimation.Friendhttps://www.blogger.com/profile/16113544345441368032noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-19896495983540604132019-12-24T19:09:54.376-08:002019-12-24T19:09:54.376-08:00Correction:
12/18 was the darkest day in NW Bell...Correction: <br /><br />12/18 was the darkest day in NW Bellingham.Friendhttps://www.blogger.com/profile/16113544345441368032noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-75853065492278948752019-12-24T19:08:19.556-08:002019-12-24T19:08:19.556-08:00It looks like the darkest day of the recent "...It looks like the darkest day of the recent "dark storm" in NW Bellingham was 12/19. I calculated 0.44MJ/m^2.Friendhttps://www.blogger.com/profile/16113544345441368032noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-7299443012594406312019-12-23T21:07:46.745-08:002019-12-23T21:07:46.745-08:00Cliff,
I'm interested in learning more about ...Cliff,<br /><br />I'm interested in learning more about the surface solar radiation projections' effects.<br /><br />Sharonhttps://www.blogger.com/profile/01122154083786146743noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-59204028242714193162019-12-23T20:44:09.195-08:002019-12-23T20:44:09.195-08:00Can you use the trapezoidal rule?Can you use the trapezoidal rule?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-62382069708403276812019-12-23T13:41:22.156-08:002019-12-23T13:41:22.156-08:001kWh - 3.6^6 joules
So, 3.6 megajoules is one kWh...1kWh - 3.6^6 joules<br /> So, 3.6 megajoules is one kWh<br />a joule is watts * seconds so 5 watts * 3600 seconds (in an hour) is 18,000 joules.<br /><br />If you have a pyranometer app is going to be more accurate compared to a panel output app in kWr, as there is some efficiency coefficient kicking around for that. It could be integral calculus based as its not going to be the same coefficient after so many hours of service life and/or power outputs/ambient temp etc. <br />BAMCIShttps://www.blogger.com/profile/05285865892838328830noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-37831367602905798362019-12-23T12:29:30.615-08:002019-12-23T12:29:30.615-08:00Graph the points in excel- use the “trendline” opt...Graph the points in excel- use the “trendline” option to fit a curve to your datapoints, the equation will be displayed on your graph.Cbhttps://www.blogger.com/profile/00346356760825436335noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-30925570214525997252019-12-23T11:11:37.340-08:002019-12-23T11:11:37.340-08:00There are some light meter and solar apps availabl...There are some light meter and solar apps available for the iPhone, I suspect that some of them might do a passable job at measuring solar radiation. What kind of conversion would need to be done to conform to the mega joules per meter per day metric?RLLhttps://www.blogger.com/profile/13850927095383579725noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-45277509746057868732019-12-23T10:56:19.510-08:002019-12-23T10:56:19.510-08:00That would seem to be significant info to have goi...That would seem to be significant info to have going forward for solar energy users as well as Ag folks. Perhaps you could find a guest blogger to explain how your info could be used by solar energy producers and users.Unknownhttps://www.blogger.com/profile/00376503625691500924noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-91718184863314047172019-12-23T10:39:07.355-08:002019-12-23T10:39:07.355-08:00It was quite the Express and I got well over 5 inc...It was quite the Express and I got well over 5 inches of rain in north Bothell, but what happened to the Pineapples? The thermometer struggled to reach 50. I have seen it go over 60, even in January.Anselhttps://www.blogger.com/profile/13835758313287462921noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-2739100665972806672019-12-22T14:33:00.500-08:002019-12-22T14:33:00.500-08:00Cliff,
How are you calculating the total daily en...Cliff,<br /><br />How are you calculating the total daily energy transfer? I can generate a graph that displays irrandiance in W/m^2 versus time as recorded by my PWS but I'm not sure how to integrate the area under the curve (there's no function, just a set of data points) in order to determine the total amount of energy transferred per unit area. I've noticed that it has been quite dark in NW Bellingham lately and would like to be able to compare my measurements with those from UW.Friendhttps://www.blogger.com/profile/16113544345441368032noreply@blogger.com