NASA/RSS apparently fixed the problem and reporting is up to date.

NASA/RSS has again stopped monthly reporting of water vapor (TPW). Last report was for Dec, 2021.

There is no definitive answer to this question, but one possible explanation is that NASA/RSS stopped reporting average global water vapor because it is not a reliable indicator of climate change. Water vapor is a highly variable gas, and its concentration in the atmosphere can vary significantly from one day to the next. As a result, it is difficult to use water vapor as a reliable indicator of long-term climate trends.

Another possible explanation is that water vapor is a greenhouse gas, and its concentration in the atmosphere has a direct impact on Earth's climate. Greenhouse gases trap heat in the atmosphere and cause the Earth's surface to warm. As water vapor concentrations increase, so does the amount of heat that is trapped in the atmosphere.

NASA/RSS may have stopped reporting average global water vapor concentrations because they did not want to give the impression that water vapor was the only greenhouse gas that was contributing to climate change. Other greenhouse gases, such as carbon dioxide and methane, are also important drivers of climate change.

There is no definitive answer to this question, but one possible explanation is that NASA/RSS stopped reporting average global water vapor because it is not a reliable indicator of climate change. Water vapor is a highly variable gas, and its concentration in the atmosphere can vary significantly from one day to the next. As a result, it is difficult to use water vapor as a reliable indicator of long-term climate trends.

Another possible explanation is that water vapor is a greenhouse gas, and its concentration in the atmosphere has a direct impact on Earth's climate. Greenhouse gases trap heat in the atmosphere and cause the Earth's surface to warm. As water vapor concentrations increase, so does the amount of heat that is trapped in the atmosphere.

NASA/RSS may have stopped reporting average global water vapor concentrations because they did not want to give the impression that water vapor was the only greenhouse gas that was contributing to climate change. Other greenhouse gases, such as carbon dioxide and methane, are also important drivers of climate change.

There is a definite trend in the data of TPW vs temperature'

The perception that burning fossil fuels causes significant climate change is wrong. It is based on the false perception that increasing CO2 is causing planet warming. CO2 change does not cause climate change. Net zero will have no effect on climate. An explanation of how/why CO2 has no significant effect on climate is at https://energyredirect3.blogspot.com

It is simple to calculate what the average global water vapor increase rate would be as a result of just planet warming (planet warming is the net result of all forcings and feedbacks). The methodology and an example using the reported average global temperatures for HadCRUT5 are given in Sect 7 of https://watervaporandwarming.blogspot.com . The average global water vapor increase has also been accurately measured Jan 1988 to Dec 2021 by NASA/RSS using satellite based instrumentation. The Total Precipitable Water (TPW) anomalies, up to their last monthly update which is for Dec 2021, are presented at http://data.remss.com/vapor/monthly_1deg/tpw_v07r01_198801_202112.time_series.txt . Their method is described at https://www.remss.com/measurements/atmospheric-water-vapor/tpw-1-deg-product/ which includes an RMS accuracy of about 1 mm (= 1 kg/m^2).

TPW is obtained by adding the reference level, 28.73 kg/m^2, to the anomalies. These two are plotted on the same graph shown as Fig 7 in Sect 7. This shows that measured average global water vapor has been increasing faster than possible from just planet warming. The ‘extra’ water vapor rate of increase is 34% to 178% more than possible from just planet warming (depending on which reported average global temperature data is used).

This demonstrates that:

1. There have to be other sources of WV. (As determined in Sect 6, about 90% of the ‘extra’ WV is from irrigation, 8.5% from cooling towers, and only 1.5% from burning fossil fuels) My assessment for irrigation corroborates what Shiklomanov 1997 determined as mentioned by Doll in 2002 at https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2001WR000355

2. The warming from WV increase overshadows the warming from CO2 increase as an initiator of Global warming.

3. Average global temperature increase of GW has been contributed to by measured WV increase, not CO2 increase.

4. Because CO2 increase has no significant effect on temperature it cannot have a significant effect on climate.

All of average global temperature increase attributable to humanity since before 1895 can be accounted for by WV increase alone. Sect 17 of http://globalclimatedrivers2.blogspot.com

Water vapor increase is self-limiting because the capacity of the atmosphere is limited and the planet temperature is limited by the Stephan-Boltzmann (T^4) relation.

Dan Pangburn the HadCRURZ data seems to be leveling off at about “1” on the 88-21 plot. Does that pattern “seem” to be continuing that same change as we finish ‘22? And does the pattern follow back in time, or is there a disruption back in time before 88? Too, the same trends seem to be showing up in the “Monthly TWP plot?

Unfortunately NASA/RSS stopped monthly reporting of TPW anomalies with their Dec 2021 report so we don't know if WV has leveled off yet or not. I have not been successful in identifying an alternative source. Others have claimed that NASA/RSS are continuing but they never provide a link so I suspect that they are lying. NASA/RSS started reporting in Jan 1988. There is nothing accurate global from satellite instrumentation prior to that.

NASA/RSS just deleted the record of WV measurements about Dec 2022 but I have the TPW anomalies on a file and the TPW anomalies as reported by NASA/RSS are available on the Wayback machine at https://web.archive.org/web/20210129125036/https://www.nifc.gov/fireInfo/fireInfo_stats_totalFires.html

Oops, wrong link. (It reveals early data on forest fires that is now also suppressed)

The correct link showing the water vapor measurements is at https://web.archive.org/web/20220707111546/https://data.remss.com/vapor/monthly_1deg/tpw_v07r01_198801_202112.time_series.txt

A simple assessment at Sect 2.8 of http://globalclimatedrivers2.blogspot.com shows that, during the period both were measured world wide, water vapor molecules increased about 7 times faster than CO2 molecules.

Average global TPW anomaly measurements thru Dec 2022 are available here: https://data.remss.com/vapor/monthly_1deg/tpw_v07r02_198801_202212.time_series.txt

Average global Total Precipitable Water (TPW) anomaly measurements thru Dec 2023 are at https://data.remss.com/vapor/monthly_1deg/tpw_v07r02_198801_202312.time_series.txt

Measured water vapor has been increasing at least 34% faster than possible from just feedback from planet warming.

Link to data set for HADCRUT5 average global temperature vs time is https://www.metoffice.gov.uk/hadobs/hadcrut5/data/HadCRUT.5.0.2.0/download.htmland measured average global water vapor vs time is at previous post. HADCRUT5 is the highest reported temperature. A scatter plot of temperature vs WV is shown. Most of the scatter is random noise.

The graph showing measured WV higher than calculated from temperature increase demonstrates that WV is driving temperature.

The regression equations for the two data sets are solved simultaneously to eliminate time. This provides a linear equation relating temperature to WV. The resulting equations and lines for all the data through 2021, 2022, and 2023 are shown. The data Jan 1988 through 2023 has 432 entries. The close match of the lines demonstrates that the noise is symmetrical and essentially balances out. This demonstrates that WV increase can account for all of Global Warming.